Merge current upstream into random-reveal review continuation

Preserve SET_PLAYER_ORDER alongside REVEAL_RANDOM_CARDS in the shared command enum; retain current upstream source and the reviewed PlayerActions routing.

tests/CMakeLists.txt

@@ -177,7 +177,29 @@ cockatrice_add_test(NAME test_age_formatting SOURCES test_age_formatting.cpp LIB
 cockatrice_add_test(NAME user_data_backup_test SOURCES user_data_backup_test.cpp LIBS libcockatrice_utility)
 cockatrice_add_test(NAME password_hash_test SOURCES password_hash_test.cpp LIBS libcockatrice_utility)
 cockatrice_add_test(NAME report_categories_test SOURCES report_categories_test.cpp LIBS libcockatrice_utility)
+cockatrice_add_test(NAME svg_recolor_test SOURCES svg_recolor_test.cpp LIBS libcockatrice_utility)
 cockatrice_add_test(NAME warning_categories_test SOURCES warning_categories_test.cpp LIBS libcockatrice_utility)
+cockatrice_add_test(
+  NAME
+  user_games_model_test
+  SOURCES
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/widgets/server/user/user_games_model.cpp
+  user_games_model_test.cpp
+  LIBS
+  libcockatrice_network_client_abstract
+  INCLUDE_DIRS
+  ${CMAKE_SOURCE_DIR}/cockatrice/src
+  ${CMAKE_SOURCE_DIR}/libcockatrice_network
+)
+cockatrice_add_test(
+  NAME
+  spoiler_file_test
+  SOURCES
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/network/update/card_spoiler/spoiler_file.cpp
+  spoiler_file_test.cpp
+  INCLUDE_DIRS
+  ${CMAKE_SOURCE_DIR}/cockatrice/src
+)
 # The installer's holder probe is Windows-only, but the wording it produces and the
 # question which programs are the payload's own are plain C++ and are what a stuck user
 # has to act on, so they are tested everywhere.
@@ -208,6 +230,18 @@ cockatrice_add_test(
   libcockatrice_deck_list
   libcockatrice_utility
 )
+cockatrice_add_test(
+  NAME
+  card_art_crop_test
+  SOURCES
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/widgets/cards/card_art_utils.cpp
+  ${VERSION_STRING_CPP}
+  card_art_crop_test.cpp
+  LIBS
+  libcockatrice_card
+  INCLUDE_DIRS
+  ${CMAKE_SOURCE_DIR}/cockatrice/src
+)
 cockatrice_add_test(
   NAME
   server_rate_limiter_test
@@ -339,6 +373,40 @@ cockatrice_add_test(
   LABELS
   server
 )
+cockatrice_add_test(
+  NAME
+  server_forced_password_change_test
+  SOURCES
+  server_forced_password_change_test.cpp
+  LIBS
+  libcockatrice_network_server_remote
+  libcockatrice_rng
+  LABELS
+  server
+)
+cockatrice_add_test(
+  NAME
+  client_login_status_test
+  SOURCES
+  ${VERSION_STRING_CPP}
+  client_login_status_test.cpp
+  LIBS
+  libcockatrice_network_client_remote
+  LABELS
+  ci
+)
+# The local game runs one client and one server in the same process.
+# Either of them can be destroyed first; the survivor has to stay usable.
+cockatrice_add_test(
+  NAME
+  local_client_lifetime_test
+  SOURCES
+  local_client_lifetime_test.cpp
+  LIBS
+  libcockatrice_network
+  LABELS
+  ci
+)
 cockatrice_add_test(
   NAME
   server_room_channels_test
@@ -391,18 +459,10 @@ cockatrice_add_test(
 )
 cockatrice_add_test(
   NAME
-  loader_local_matching_test
+  font_config_test
   SOURCES
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/card_picture_loader/card_picture_loader_local.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/cache_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/card_counter_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/shortcuts_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/network/update/client/release_channel.cpp
-  ${VERSION_STRING_CPP}
-  loader_local_matching_test.cpp
-  LIBS
-  libcockatrice_network
-  libcockatrice_settings
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/theme_config.cpp
+  font_config_test.cpp
   INCLUDE_DIRS
   ${CMAKE_SOURCE_DIR}/cockatrice/src
 )
@@ -457,6 +517,19 @@ endif()
 
 # Guard must match the condition for src/single_instance_manager.cpp in cockatrice/CMakeLists.txt.
 if(WITH_CLIENT)
+  cockatrice_add_test(
+    NAME
+    moxfield_signature_spells_test
+    SOURCES
+    ${VERSION_STRING_CPP}
+    ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/deck_loader/card_node_function.cpp
+    moxfield_signature_spells_test.cpp
+    LIBS
+    libcockatrice_card
+    libcockatrice_deck_list
+    INCLUDE_DIRS
+    ${CMAKE_SOURCE_DIR}/cockatrice/src
+  )
   cockatrice_add_test(
     NAME
     single_instance_manager_test
@@ -504,7 +577,9 @@ add_subdirectory(card_zone_algorithms)
 add_subdirectory(carddatabase)
 add_subdirectory(deck_list_model)
 add_subdirectory(deck_list_zones)
+add_subdirectory(icon_assets)
 add_subdirectory(loading_from_clipboard)
+add_subdirectory(model_contract)
 add_subdirectory(movecard_tests)
 add_subdirectory(oracle)
 add_subdirectory(settings)
@@ -524,3 +599,46 @@ endif()
 if(WITH_ORACLE OR WITH_CLIENT)
   add_subdirectory(picture_loader_benchmark)
 endif()
+
+# loader_local_matching_test and deck_state_manager_test links libcockatrice_settings,
+# which only exists when a client/UI-capable target is being built.
+if(WITH_ORACLE OR WITH_CLIENT)
+  set(SETTINGS_SOURCES
+      ${CMAKE_SOURCE_DIR}/cockatrice/src/client/network/update/client/release_channel.cpp
+      ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/cache_settings.cpp
+      ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/card_counter_settings.cpp
+      ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/shortcuts_settings.cpp
+      ${VERSION_STRING_CPP}
+  )
+  set(SETTINGS_LIBS libcockatrice_network libcockatrice_settings)
+  set(SETTINGS_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/cockatrice/src)
+
+  cockatrice_add_test(
+    NAME
+    loader_local_matching_test
+    SOURCES
+    ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/card_picture_loader/card_picture_loader_local.cpp
+    ${SETTINGS_SOURCES}
+    loader_local_matching_test.cpp
+    LIBS
+    ${SETTINGS_LIBS}
+    INCLUDE_DIRS
+    ${SETTINGS_INCLUDE_DIRS}
+  )
+  cockatrice_add_test(
+    NAME
+    deck_state_manager_test
+    SOURCES
+    ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/widgets/deck_editor/deck_state_manager.cpp
+    ${SETTINGS_SOURCES}
+    deck_state_manager_test.cpp
+    LIBS
+    libcockatrice_card
+    libcockatrice_deck_list
+    libcockatrice_models
+    libcockatrice_utility
+    ${SETTINGS_LIBS}
+    INCLUDE_DIRS
+    ${SETTINGS_INCLUDE_DIRS}
+  )
+endif()

tests/card_art_crop_test.cpp

@@ -0,0 +1,92 @@
+#include "interface/widgets/cards/card_art_utils.h"
+
+#include <QApplication>
+#include <QImage>
+#include <QPainter>
+#include <QTransform>
+#include <gtest/gtest.h>
+#include <libcockatrice/card/card_info.h>
+#include <libcockatrice/card/printing/exact_card.h>
+
+namespace
+{
+ExactCard makeCard(bool landscape)
+{
+    CardInfo::UiAttributes attributes;
+    attributes.landscapeOrientation = landscape;
+    return ExactCard(CardInfo::newInstance("Artwork", "", false, {}, {}, {}, {}, attributes));
+}
+
+QPixmap landscapeCardWithFrame()
+{
+    // Normalized landscape frame: the title reaches 14% down the upright
+    // image, and the Battle type line starts at 56%. Artwork has two colors
+    // so the test also detects a wrong or missing rotation.
+    QImage upright(1400, 1000, QImage::Format_RGB32);
+    upright.fill(Qt::red);
+    QPainter painter(&upright);
+    painter.fillRect(QRect(70, 140, 1260, 420), Qt::green);
+    painter.fillRect(QRect(700, 140, 630, 420), Qt::blue);
+    painter.end();
+    QTransform storedOrientation;
+    storedOrientation.rotate(-90);
+    return QPixmap::fromImage(upright.transformed(storedOrientation));
+}
+
+TEST(CardArtCrop, LandscapeCropExcludesNameAndRulesBoxesAndRotatesUpright)
+{
+    const QImage crop = CardArtUtils::cropCardArt(landscapeCardWithFrame(), makeCard(true)).toImage();
+    ASSERT_GT(crop.width(), crop.height());
+    ASSERT_FALSE(crop.isNull());
+    for (int y = 0; y < crop.height(); ++y) {
+        for (int x = 0; x < crop.width(); ++x) {
+            EXPECT_EQ(x < crop.width() / 2 ? QColor(Qt::green) : QColor(Qt::blue), crop.pixelColor(x, y));
+        }
+    }
+}
+
+TEST(CardArtCrop, PortraitCropRetainsItsExistingArtworkBounds)
+{
+    QImage source(745, 1040, QImage::Format_RGB32);
+    for (int y = 0; y < source.height(); ++y) {
+        for (int x = 0; x < source.width(); ++x) {
+            source.setPixelColor(x, y, QColor(x % 256, y % 256, (x + y) % 256));
+        }
+    }
+    const QPixmap input = QPixmap::fromImage(source);
+    const QImage crop = CardArtUtils::cropCardArt(input, makeCard(false)).toImage();
+    EXPECT_EQ(source.copy(QRect(52, 114, 641, 458)), crop);
+}
+
+TEST(CardArtCrop, DevicePixelRatioDoesNotChangeTheArtworkPixels)
+{
+    QPixmap source = landscapeCardWithFrame();
+    const QPixmap normal = CardArtUtils::cropCardArt(source, makeCard(true));
+    source.setDevicePixelRatio(2.0);
+    const QPixmap highDpi = CardArtUtils::cropCardArt(source, makeCard(true));
+    EXPECT_EQ(normal.size(), highDpi.size());
+    EXPECT_EQ(2.0, highDpi.devicePixelRatio());
+    QImage normalPixels = normal.toImage();
+    QImage highDpiPixels = highDpi.toImage();
+    normalPixels.setDevicePixelRatio(1.0);
+    highDpiPixels.setDevicePixelRatio(1.0);
+    EXPECT_EQ(normalPixels, highDpiPixels);
+}
+
+TEST(CardArtCrop, EmptyAndSmallImagesStayWithinTheirBounds)
+{
+    EXPECT_TRUE(CardArtUtils::cropCardArt({}, makeCard(true)).isNull());
+    QPixmap small(1, 1);
+    small.fill(Qt::green);
+    EXPECT_EQ(small.toImage(), CardArtUtils::cropCardArt(small, makeCard(true)).toImage());
+    EXPECT_EQ(small.toImage(), CardArtUtils::cropCardArt(small, makeCard(false)).toImage());
+}
+} // namespace
+
+int main(int argc, char **argv)
+{
+    qputenv("QT_QPA_PLATFORM", "offscreen");
+    QApplication app(argc, argv);
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/carddatabase/CMakeLists.txt

@@ -35,6 +35,21 @@ if(WITH_ORACLE OR WITH_CLIENT)
     LIBS
     libcockatrice_filters
   )
+
+  # ------------------------
+  # Visual Display Model Test
+  # ------------------------
+  cockatrice_add_test(
+    NAME
+    visual_display_model_test
+    SOURCES
+    ${VERSION_STRING_CPP}
+    visual_display_model_test.cpp
+    mocks.cpp
+    LIBS
+    libcockatrice_card
+    libcockatrice_models
+  )
 endif()
 
 # ------------------------

tests/carddatabase/carddatabase_test.cpp

@@ -36,6 +36,12 @@
 #include <libcockatrice/utility/card_ref.h>
 #include <string>
 
+#ifdef Q_OS_UNIX
+#include <csignal>
+#include <sys/resource.h>
+#include <unistd.h>
+#endif
+
 namespace
 {
 
@@ -204,6 +210,64 @@ TEST(CardDatabaseTest, Xml4LocalizedDataRoundTrip)
     ASSERT_EQ(printings.first().getProperty("manacost"), "1R");
 }
 
+#ifdef Q_OS_UNIX
+/**
+ * @brief A failed write keeps the previously installed card database intact.
+ *
+ * This is the writer Oracle uses to install a refreshed database, so the truncation
+ * bug has to be covered here and not only through OracleDatabase::saveXml.
+ */
+TEST(CardDatabaseTest, Xml4ShortWriteKeepsInstalledFile)
+{
+    NoopCardSetPriorityController controller;
+    CardSetPtr set =
+        CardSet::newInstance(&controller, "TST", "Test Set", "expansion", QDate(), CardSet::PriorityPrimary);
+
+    QHash<QString, QString> props;
+    props["manacost"] = "1R";
+    PrintingInfo printing(set, LazyPropertiesHash(props));
+    SetToPrintingsMap setsInfo;
+    setsInfo["TST"].append(printing);
+
+    CardInfo::UiAttributes attributes = {.tableRow = 1};
+    CardInfoPtr card =
+        CardInfo::newInstance("Lightning Bolt", QString(1024, 'x'), false, {}, {}, {}, setsInfo, attributes);
+
+    SetNameMap sets;
+    sets.insert("TST", set);
+    CardNameMap cards;
+    cards.insert("Lightning Bolt", card);
+
+    QTemporaryDir tempDir;
+    ASSERT_TRUE(tempDir.isValid());
+    const QString fileName = tempDir.filePath("cards.xml");
+
+    QFile installed(fileName);
+    ASSERT_TRUE(installed.open(QIODevice::WriteOnly));
+    ASSERT_EQ(installed.write("installed database"), 18);
+    installed.close();
+
+    // A real filesystem write failure, isolated in the death-test child so the
+    // process-wide file limit never affects other cases or the parent runner.
+    ASSERT_EXIT(
+        {
+            std::signal(SIGXFSZ, SIG_IGN);
+            struct rlimit limit;
+            limit.rlim_cur = 128;
+            limit.rlim_max = 128;
+            if (setrlimit(RLIMIT_FSIZE, &limit) != 0) {
+                _exit(2);
+            }
+            CockatriceXml4Parser writer(&controller);
+            _exit(writer.saveToFile({}, sets, cards, fileName) ? 1 : 0);
+        },
+        ::testing::ExitedWithCode(0), "");
+
+    ASSERT_TRUE(installed.open(QIODevice::ReadOnly));
+    EXPECT_EQ(installed.readAll(), "installed database");
+}
+#endif
+
 /**
  * @brief Path provider serving a sandboxed copy of the test card database.
  */

tests/carddatabase/visual_display_model_test.cpp

@@ -0,0 +1,188 @@
+/**
+ * @file visual_display_model_test.cpp
+ * @brief Tests for the flattened model behind the visual card database grid.
+ */
+
+#include "card_database_display_model.h"
+#include "card_database_model.h"
+#include "card_database_visual_display_model.h"
+#include "libcockatrice/card/card_info.h"
+#include "libcockatrice/card/database/card_database.h"
+#include "libcockatrice/card/database/card_database_querier.h"
+#include "libcockatrice/card/printing/exact_card.h"
+#include "libcockatrice/card/printing/printing_info.h"
+#include "libcockatrice/card/set/card_set.h"
+#include "libcockatrice/interfaces/noop_card_preference_provider.h"
+#include "libcockatrice/interfaces/noop_card_set_priority_controller.h"
+#include "test_card_database_path_provider.h"
+
+#include "gtest/gtest.h"
+#include <QCoreApplication>
+#include <QDate>
+#include <QEventLoop>
+#include <QHash>
+#include <QMap>
+#include <QString>
+#include <QTimer>
+#include <memory>
+
+namespace
+{
+// GTest's main() creates no QCoreApplication, which QTimer needs for its event loop.
+const QCoreApplication &application()
+{
+    static int argc = 1;
+    static char executable[] = "visual_display_model_test";
+    static char *argv[] = {executable, nullptr};
+    static const QCoreApplication app(argc, argv);
+    return app;
+}
+
+/// Lets the rebuild timer fire, as it would in the running client.
+void waitForRebuild()
+{
+    QEventLoop loop;
+    QTimer::singleShot(100, &loop, &QEventLoop::quit);
+    loop.exec();
+}
+
+class CardDatabaseVisualDisplayModelTest : public ::testing::Test
+{
+protected:
+    void SetUp() override
+    {
+        (void)application();
+
+        db = std::make_unique<CardDatabase>(nullptr, new NoopCardPreferenceProvider(),
+                                            new TestCardDatabasePathProvider(), new NoopCardSetPriorityController());
+        db->loadCardDatabases();
+
+        cardModel = std::make_unique<CardDatabaseModel>(db.get(), false);
+        displayModel = std::make_unique<CardDatabaseDisplayModel>();
+        displayModel->setSourceModel(cardModel.get());
+        visualModel = std::make_unique<CardDatabaseVisualDisplayModel>(displayModel.get(), db->query());
+        visualModel->refresh();
+    }
+
+    /**
+     * @brief Builds a card with @p printingCount printings in each named set.
+     * @param printingCountPerSet Set short name to the number of printings in that set.
+     */
+    [[nodiscard]] CardInfoPtr makeCard(const QString &name, const QMap<QString, int> &printingCountPerSet)
+    {
+        SetToPrintingsMap setsInfo;
+        for (auto it = printingCountPerSet.constBegin(); it != printingCountPerSet.constEnd(); ++it) {
+            CardSetPtr set = CardSet::newInstance(&setController, it.key(), it.key() + " test set", "expansion",
+                                                  QDate(), CardSet::PriorityPrimary);
+            for (int printing = 0; printing < it.value(); ++printing) {
+                QHash<QString, QString> properties;
+                properties["uuid"] = QString("%1-%2-%3").arg(it.key(), name).arg(printing);
+                setsInfo[it.key()].append(PrintingInfo(set, LazyPropertiesHash(properties)));
+            }
+        }
+
+        CardInfo::UiAttributes attributes = {.tableRow = 1};
+        return CardInfo::newInstance(name, "", false, {}, {}, {}, setsInfo, attributes);
+    }
+
+    NoopCardSetPriorityController setController;
+    std::unique_ptr<CardDatabase> db;
+    std::unique_ptr<CardDatabaseModel> cardModel;
+    std::unique_ptr<CardDatabaseDisplayModel> displayModel;
+    std::unique_ptr<CardDatabaseVisualDisplayModel> visualModel;
+};
+
+TEST_F(CardDatabaseVisualDisplayModelTest, ExposesTheCardInfoBehindAProxyRow)
+{
+    ASSERT_GT(displayModel->rowCount(), 0);
+
+    const QVariant info = displayModel->data(displayModel->index(0, CardDatabaseModel::NameColumn),
+                                             CardDatabaseDisplayModel::CardInfoRole);
+    ASSERT_TRUE(info.isValid());
+    EXPECT_FALSE(info.value<CardInfoPtr>().isNull());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, FlattensOneRowPerProxyCardWithoutSetFilters)
+{
+    ASSERT_GT(displayModel->rowCount(), 0);
+    EXPECT_EQ(displayModel->rowCount(), visualModel->rowCount());
+
+    for (int row = 0; row < visualModel->rowCount(); ++row) {
+        const ExactCard card = visualModel->cardAt(row);
+        ASSERT_TRUE(card) << "row " << row;
+        EXPECT_EQ(
+            displayModel->data(displayModel->index(row, CardDatabaseModel::NameColumn), Qt::DisplayRole).toString(),
+            card.getName())
+            << "row " << row;
+    }
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, ShowsOneRowPerCardWhenNoSetIsFiltered)
+{
+    const int rowsBefore = visualModel->rowCount();
+
+    db->addCard(makeCard("Multi", {{"TST", 2}, {"OTH", 1}}));
+    visualModel->refresh();
+
+    EXPECT_EQ(rowsBefore + 1, visualModel->rowCount());
+    EXPECT_EQ("Multi", visualModel->cardAt(visualModel->rowCount() - 1).getName());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, ShowsEveryPrintingOfAFilteredSet)
+{
+    db->addCard(makeCard("Multi", {{"TST", 2}, {"OTH", 1}}));
+    visualModel->refresh();
+
+    visualModel->setSetFilterTerms({"TST"});
+
+    ASSERT_EQ(2, visualModel->rowCount());
+    for (int row = 0; row < visualModel->rowCount(); ++row) {
+        const ExactCard card = visualModel->cardAt(row);
+        ASSERT_TRUE(card) << "row " << row;
+        EXPECT_EQ("Multi", card.getName());
+        ASSERT_FALSE(card.getPrinting().isEmpty()) << "row " << row;
+        EXPECT_EQ("TST", card.getPrinting().getSet()->getShortName()) << "row " << row;
+    }
+    EXPECT_NE(visualModel->cardAt(0).getPrinting(), visualModel->cardAt(1).getPrinting());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, HidesCardsWithoutAPrintingInTheFilteredSets)
+{
+    visualModel->setSetFilterTerms({"NO SUCH SET"});
+
+    EXPECT_EQ(0, visualModel->rowCount());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, RestoresOneRowPerCardWhenTheSetTermsClear)
+{
+    db->addCard(makeCard("Multi", {{"TST", 2}, {"OTH", 1}}));
+    visualModel->refresh();
+    const int rowsBefore = visualModel->rowCount();
+
+    visualModel->setSetFilterTerms({"TST"});
+    ASSERT_EQ(2, visualModel->rowCount());
+
+    visualModel->setSetFilterTerms({});
+    EXPECT_EQ(rowsBefore, visualModel->rowCount());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, RebuildsByItselfWhenTheProxyGainsARow)
+{
+    const int rowsBefore = visualModel->rowCount();
+
+    db->addCard(makeCard("Late", {{"TST", 1}}));
+    waitForRebuild();
+
+    EXPECT_EQ(rowsBefore + 1, visualModel->rowCount());
+}
+
+TEST_F(CardDatabaseVisualDisplayModelTest, ReportsTheCardNameForDisplayAndAccessibleText)
+{
+    ASSERT_GT(visualModel->rowCount(), 0);
+    const QString expected = visualModel->cardAt(0).getName();
+
+    EXPECT_EQ(expected, visualModel->data(visualModel->index(0), Qt::DisplayRole).toString());
+    EXPECT_EQ(expected, visualModel->data(visualModel->index(0), Qt::AccessibleTextRole).toString());
+    EXPECT_FALSE(visualModel->data(QModelIndex(), Qt::DisplayRole).isValid());
+}
+} // namespace

tests/client_login_status_test.cpp

@@ -0,0 +1,116 @@
+/** @file client_login_status_test.cpp
+ *  @brief The login response state machine must keep the session a forced password change needs.
+ *  @ingroup Tests
+ */
+
+#include "abstract_client.h"
+#include "libcockatrice/interfaces/interface_network_settings_provider.h"
+#include "libcockatrice/protocol/pb/response.pb.h"
+#include "libcockatrice/protocol/pb/response_login.pb.h"
+#include "remote_client.h"
+
+#include <QCoreApplication>
+#include <QMetaObject>
+#include <QString>
+#include <gtest/gtest.h>
+
+namespace
+{
+
+class StubNetworkSettingsProvider : public INetworkSettingsProvider
+{
+public:
+    QString getClientID() override
+    {
+        return {};
+    }
+    [[nodiscard]] int getTimeOut() const override
+    {
+        return 1000;
+    }
+    [[nodiscard]] int getKeepAlive() const override
+    {
+        return 60;
+    }
+    [[nodiscard]] bool getNotifyAboutUpdates() const override
+    {
+        return false;
+    }
+    void setKnownMissingFeatures(const QString &) override
+    {
+    }
+    QString getKnownMissingFeatures() override
+    {
+        return {};
+    }
+};
+
+/**
+ * @brief Feeds a login response to RemoteClient without a socket.
+ *
+ * `loginResponse` is the slot the socket thread runs for the login command's answer, so
+ * invoking it directly exercises the status transition that decides whether `readData()`
+ * tears the connection down right after it.
+ */
+class ClientLoginStatusTest : public ::testing::Test
+{
+protected:
+    void SetUp() override
+    {
+        client = new RemoteClient(nullptr, &provider);
+    }
+
+    void TearDown() override
+    {
+        delete client;
+        client = nullptr;
+    }
+
+    void deliverLoginResponse(Response::ResponseCode code)
+    {
+        Response response;
+        response.set_response_code(code);
+        response.MutableExtension(Response_Login::ext);
+        ASSERT_TRUE(
+            QMetaObject::invokeMethod(client, "loginResponse", Qt::DirectConnection, Q_ARG(Response, response)));
+    }
+
+    StubNetworkSettingsProvider provider;
+    RemoteClient *client = nullptr;
+};
+
+/**
+ * @brief A required password change is not a failed login.
+ *
+ * The server keeps the session open and accepts only ping and Command_AccountPassword until
+ * the password is replaced. StatusDisconnecting would make readData() close the socket right
+ * after this slot returns - before the dialog that collects the new password (queued to the
+ * UI thread) can send anything - and the pending command would never be answered because the
+ * ping timer that times it out dies with the connection. StatusLoggedIn would start the
+ * normal post-login flow for a session that cannot serve it.
+ */
+TEST_F(ClientLoginStatusTest, PasswordChangeRequiredKeepsTheSessionOpen)
+{
+    deliverLoginResponse(Response::RespPasswordChangeRequired);
+
+    EXPECT_EQ(client->getStatus(), StatusPasswordChangeRequired);
+    EXPECT_NE(client->getStatus(), StatusDisconnecting);
+    EXPECT_NE(client->getStatus(), StatusLoggedIn);
+}
+
+/** @brief Every other login error still ends the connection, as it did before. */
+TEST_F(ClientLoginStatusTest, OtherLoginErrorsDisconnect)
+{
+    deliverLoginResponse(Response::RespWrongPassword);
+
+    EXPECT_EQ(client->getStatus(), StatusDisconnecting);
+}
+
+} // namespace
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/deck_list_model/deck_list_model_custom_zones_test.cpp

@@ -278,6 +278,37 @@ TEST(DeckListModelCustomZones, SortPlainNodeDoesNotReorderCustomZones)
     EXPECT_EQ(mapping[1].second, 1);
 }
 
+TEST(DeckListModelCustomZones, ManaGroupsUseNumericOrderWithoutChangingOtherNodes)
+{
+    InnerDecklistNode root;
+    auto *board = new InnerDecklistNode(DECK_ZONE_MAIN, &root);
+    const QStringList original = {"10", "2", "0.5", "1000000", "1", "unknown", "nan"};
+    for (const auto &name : original) {
+        new InnerDecklistNode(name, board);
+    }
+    auto *custom = new DecklistModelSubZoneNode("1x", board);
+    new InnerDecklistNode("10", custom);
+    new InnerDecklistNode("2", custom);
+    root.setSortMethod(DeckSortMethod::ByName);
+
+    const auto mapping = DeckListModelCustomZones::sortWithCustomZonesLast(&root, board, Qt::AscendingOrder, true);
+    EXPECT_EQ(childNames(board), (QStringList{"0.5", "1", "2", "10", "1000000", "nan", "unknown", "1x"}));
+    QStringList before = original;
+    before.append("1x");
+    for (const auto &move : mapping) {
+        EXPECT_EQ(board->at(move.second)->getName(), before.at(move.first));
+    }
+
+    (void)DeckListModelCustomZones::sortWithCustomZonesLast(&root, board, Qt::DescendingOrder, true);
+    EXPECT_EQ(childNames(board), (QStringList{"1000000", "10", "2", "1", "0.5", "unknown", "nan", "1x"}));
+
+    // The numeric flag only affects groups directly under a board.
+    (void)DeckListModelCustomZones::sortWithCustomZonesLast(&root, custom, Qt::AscendingOrder, true);
+    EXPECT_EQ(childNames(custom), (QStringList{"10", "2"}));
+    (void)DeckListModelCustomZones::sortWithCustomZonesLast(&root, board, Qt::AscendingOrder);
+    EXPECT_EQ(childNames(board), (QStringList{"0.5", "1", "10", "1000000", "2", "nan", "unknown", "1x"}));
+}
+
 int main(int argc, char **argv)
 {
     ::testing::InitGoogleTest(&argc, argv);

tests/deck_list_zones/deck_list_zones_test.cpp

@@ -393,6 +393,28 @@ TEST(DeckListZones, MaybeboardCustomZoneCardsAreExcludedFromHash)
     EXPECT_EQ(deck.getDeckHash(), expected.getDeckHash());
 }
 
+TEST(DeckListZones, PlainExportPutsMainFirstWithoutReorderingSavedZones)
+{
+    DeckList deck;
+    auto *tree = deck.getTree();
+    ASSERT_NE(tree->addCustomZone(DECK_ZONE_SIDE, "Side Tech"), nullptr);
+    tree->addCard("Side Card", 2, "Side Tech", -1);
+    tree->addCard("Token Card", 1, DECK_ZONE_TOKENS, -1);
+    ASSERT_NE(tree->addCustomZone(DECK_ZONE_MAIN, "Removal"), nullptr);
+    tree->addCard("Main Card", 3, "Removal", -1);
+    ASSERT_NE(tree->addCustomZone(DECK_ZONE_MAYBEBOARD, "Candidates"), nullptr);
+    tree->addCard("Maybe Card", 4, "Candidates", -1);
+
+    const QString native = deck.writeToString_Native();
+    EXPECT_EQ(deck.writeToString_Plain(true, false), QString("3 Main Card\nSB: 2 Side Card\n1 Token Card\n"));
+    EXPECT_EQ(deck.writeToString_Plain(false, false), QString("3 Main Card\n2 Side Card\n1 Token Card\n"));
+    EXPECT_EQ(deck.writeToString_Native(), native);
+
+    DeckList reopened(native);
+    EXPECT_EQ(reopened.getZoneNodes().first()->getName(), DECK_ZONE_SIDE);
+    EXPECT_EQ(reopened.writeToString_Plain(true, false), deck.writeToString_Plain(true, false));
+}
+
 int main(int argc, char **argv)
 {
     ::testing::InitGoogleTest(&argc, argv);

tests/deck_state_manager_test.cpp

@@ -0,0 +1,190 @@
+/** @file deck_state_manager_test.cpp
+ *  @brief Tests for DeckStateManager operations.
+ *  @ingroup Tests
+ */
+
+#include "libcockatrice/card/database/card_database.h"
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QStandardPaths>
+#include <client/settings/cache_settings.h>
+#include <deck_list_model.h>
+#include <gtest/gtest.h>
+#include <interface/widgets/deck_editor/deck_state_manager.h>
+#include <libcockatrice/card/database/card_database_manager.h>
+#include <libcockatrice/card/printing/exact_card.h>
+#include <libcockatrice/deck_list/tree/inner_deck_list_node.h>
+
+namespace
+{
+
+/**
+ * @brief Assert that the DeckStateManager's deck list contains only the given zone,
+ * and that that zone only contains the given number of cards, all with the given card name.
+ *
+ * @param manager the DeckStateManager
+ * @param restrictToZones In which zones to look for the zone and cards. Empty means use the entire deck
+ * @param zone The only zone that should exist in the deck
+ * @param cardName The name of the only card that should exist in the deck
+ * @param cardNumber The number of cards that should be in the deck
+ */
+static void containsExactly(const DeckStateManager &manager,
+                            const QSet<QString> &restrictToZones,
+                            QString zone,
+                            QString cardName,
+                            int cardNumber)
+{
+    QList<const InnerDecklistNode *> zones = manager.getDeckList().getZoneNodes(restrictToZones);
+    ASSERT_EQ(zones.size(), 1);
+    ASSERT_EQ(zones[0]->getName(), zone);
+    ASSERT_EQ(zones[0]->size(), 1);
+    const DecklistCardNode *card = dynamic_cast<const DecklistCardNode *>((*zones[0])[0]);
+    ASSERT_NE(card, nullptr);
+    ASSERT_EQ(card->getName(), cardName);
+    ASSERT_EQ(card->getNumber(), cardNumber);
+}
+
+/** @brief Return CardInfo of a token with the given name. */
+static CardInfoPtr makeToken(QString name)
+{
+    return CardInfo::newInstance(name, "", true, {}, {}, {}, {}, {});
+}
+
+// =====================================================================================================================
+// addCard
+// =====================================================================================================================
+
+TEST(DeckStateManager, AddCards)
+{
+    DeckStateManager manager;
+    manager.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    containsExactly(manager, {}, DECK_ZONE_MAIN, "Lightning Bolt", 1);
+    manager.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    containsExactly(manager, {}, DECK_ZONE_MAIN, "Lightning Bolt", 2);
+}
+
+TEST(DeckStateManager, AddCardZones)
+{
+    DeckStateManager manager;
+    manager.addCard(ExactCard(CardInfo::newInstance("Grizzly Bears")), DECK_ZONE_MAIN);
+    manager.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_SIDE);
+    manager.addCard(ExactCard(CardInfo::newInstance("Swords to Plowshares")), DECK_ZONE_MAYBEBOARD);
+
+    // Check if the cards got put into the correct zones.
+    ASSERT_EQ(manager.getDeckList().getZoneNodes().size(), 3);
+    containsExactly(manager, {DECK_ZONE_MAIN}, DECK_ZONE_MAIN, "Grizzly Bears", 1);
+    containsExactly(manager, {DECK_ZONE_SIDE}, DECK_ZONE_SIDE, "Lightning Bolt", 1);
+    containsExactly(manager, {DECK_ZONE_MAYBEBOARD}, DECK_ZONE_MAYBEBOARD, "Swords to Plowshares", 1);
+}
+
+TEST(DeckStateManager, AddTokens)
+{
+    DeckStateManager manager;
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAIN);
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_SIDE);
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAYBEBOARD);
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_TOKENS);
+
+    // A token should always be put into the tokens zone.
+    containsExactly(manager, {}, DECK_ZONE_TOKENS, "Beast", 4);
+}
+
+// =====================================================================================================================
+// decrementCard
+// =====================================================================================================================
+
+TEST(DeckStateManager, DecrementCards)
+{
+    DeckStateManager manager;
+    manager.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    manager.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    containsExactly(manager, {}, DECK_ZONE_MAIN, "Lightning Bolt", 2);
+
+    // Removing from the sideboard should do nothing, as there is nothing in the side board.
+    manager.decrementCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_SIDE);
+    containsExactly(manager, {}, DECK_ZONE_MAIN, "Lightning Bolt", 2);
+
+    // Remove the first card.
+    manager.decrementCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    containsExactly(manager, {}, DECK_ZONE_MAIN, "Lightning Bolt", 1);
+
+    // Removing the second card should also remove the zone.
+    manager.decrementCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+    ASSERT_EQ(manager.getDeckList().getZoneNodes().size(), 0);
+}
+
+TEST(DeckStateManager, DecrementTokens)
+{
+    DeckStateManager manager;
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAIN);
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_SIDE);
+    manager.addCard(ExactCard(makeToken("Beast")), DECK_ZONE_TOKENS);
+    containsExactly(manager, {}, DECK_ZONE_TOKENS, "Beast", 3);
+
+    manager.decrementCard(ExactCard(makeToken("Beast")), DECK_ZONE_TOKENS);
+    containsExactly(manager, {}, DECK_ZONE_TOKENS, "Beast", 2);
+
+    // Removing tokens from a given zone should remove them from the
+    // token zone if the given zone does not contain the token.
+    manager.decrementCard(ExactCard(makeToken("Beast")), DECK_ZONE_SIDE);
+    containsExactly(manager, {}, DECK_ZONE_TOKENS, "Beast", 1);
+
+    manager.decrementCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAIN);
+    ASSERT_EQ(manager.getDeckList().getZoneNodes().size(), 0);
+}
+
+TEST(DeckStateManager, DecrementTokenMainboard)
+{
+    DeckStateManager manager;
+
+    // Add cards to the deck list directly so tokens are not
+    // automatically added to the token zone.
+    manager.getDeckListShared()->addCard("Beast", DECK_ZONE_MAIN);
+    manager.getDeckListShared()->addCard("Beast", DECK_ZONE_TOKENS);
+    ASSERT_EQ(manager.getDeckList().getZoneNodes().size(), 2);
+    containsExactly(manager, {DECK_ZONE_MAIN}, DECK_ZONE_MAIN, "Beast", 1);
+    containsExactly(manager, {DECK_ZONE_TOKENS}, DECK_ZONE_TOKENS, "Beast", 1);
+
+    // decrementCard uses the model to find the card, so we need to rebuild it.
+    manager.getModel()->rebuildTree();
+
+    // Tokens should be removed from the main zone first.
+    manager.decrementCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAIN);
+    ASSERT_EQ(manager.getDeckList().getZoneNodes({DECK_ZONE_MAIN}).size(), 0);
+    containsExactly(manager, {DECK_ZONE_TOKENS}, DECK_ZONE_TOKENS, "Beast", 1);
+
+    // If the main zone is empty they can be removed from the token zone.
+    manager.decrementCard(ExactCard(makeToken("Beast")), DECK_ZONE_MAIN);
+    ASSERT_EQ(manager.getDeckList().getZoneNodes().size(), 0);
+}
+} // namespace
+
+int main(int argc, char **argv)
+{
+    // Redirect SettingsCache reads/writes (app-data location) away from the real user profile.
+    QStandardPaths::setTestModeEnabled(true);
+    QCoreApplication app(argc, argv);
+    QCoreApplication::setOrganizationName(QStringLiteral("CockatriceTest"));
+    QCoreApplication::setApplicationName(
+        QStringLiteral("deck-state-manager-test-%1").arg(QCoreApplication::applicationPid()));
+
+    ::testing::InitGoogleTest(&argc, argv);
+
+    // Add cards to the card database
+    auto *db = CardDatabaseManager::getInstance();
+    db->addCard(CardInfo::newInstance("Lightning Bolt"));
+    db->addCard(CardInfo::newInstance("Grizzly Bears"));
+    db->addCard(CardInfo::newInstance("Swords to Plowshares"));
+    db->addCard(makeToken("Beast"));
+
+    int result = RUN_ALL_TESTS();
+
+    // Clean up the settings directory in ~/.qttest if the tests ran.
+    if (!::testing::GTEST_FLAG(list_tests)) {
+        QDir(SettingsCache::instance().getDataPath()).removeRecursively();
+        QDir(SettingsCache::instance().getCachePath()).removeRecursively();
+    }
+
+    return result;
+}

tests/font_config_test.cpp

@@ -0,0 +1,195 @@
+#include "interface/theme_config.h"
+
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QFont>
+#include <QIODevice>
+#include <QString>
+#include <QStringLiteral>
+#include <QTemporaryDir>
+#include <QTextStream>
+#include <gtest/gtest.h>
+
+namespace
+{
+// Writes content to a file inside tmp, creating parents as needed.
+QString writeTempFile(QTemporaryDir &tmp, const QString &relativePath, const QString &content)
+{
+    const QString filePath = QDir(tmp.path()).absoluteFilePath(relativePath);
+    EXPECT_TRUE(QDir().mkpath(QFileInfo(filePath).absolutePath()));
+    QFile file(filePath);
+    EXPECT_TRUE(file.open(QIODevice::WriteOnly | QIODevice::Text));
+    QTextStream out(&file);
+    out << content;
+    file.close();
+    return filePath;
+}
+
+QFont makeFont(const QString &family, int pointSize)
+{
+    QFont font(family);
+    font.setPointSize(pointSize);
+    return font;
+}
+} // namespace
+
+TEST(FontConfigTest, FileNameIsFontsToml)
+{
+    EXPECT_EQ(FontConfig::fileName(), QStringLiteral("fonts.toml"));
+}
+
+TEST(FontConfigTest, EmptyByDefault)
+{
+    FontConfig cfg;
+    EXPECT_FALSE(cfg.hasFonts());
+    EXPECT_TRUE(cfg.toToml().isEmpty());
+    EXPECT_EQ(cfg, FontConfig());
+    EXPECT_EQ(cfg, FontConfig::fromFile("/nonexistent/path/fonts.toml"));
+    EXPECT_EQ(cfg, FontConfig::fromThemeDir(QString()));
+}
+
+TEST(FontConfigTest, RoundTripPreservesFamilyAndSize)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+    cfg.fonts[AppFont::ChatLog] = makeFont("JetBrains Mono", 9);
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 11);
+    cfg.fonts[AppFont::DeckList] = makeFont("Roboto", 12);
+    ASSERT_TRUE(cfg.hasFonts());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    EXPECT_EQ(loaded, cfg);
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault].family(), QStringLiteral("Inter"));
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault].pointSize(), 10);
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].family(), QStringLiteral("JetBrains Mono"));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].pointSize(), 9);
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].family(), QStringLiteral("Noto Serif"));
+    EXPECT_EQ(loaded.fonts[AppFont::CardText].pointSize(), 11);
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList].family(), QStringLiteral("Roboto"));
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList].pointSize(), 12);
+}
+
+TEST(FontConfigTest, RoundTripStripsWeightAndItalic)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    QFont styled("Inter");
+    styled.setPointSize(10);
+    styled.setBold(true);
+    styled.setItalic(true);
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::ChatLog] = styled;
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml", cfg.toToml());
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    ASSERT_TRUE(loaded.fonts.contains(AppFont::ChatLog));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].family(), QStringLiteral("Inter"));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog].pointSize(), 10);
+    EXPECT_FALSE(loaded.fonts[AppFont::ChatLog].bold());
+    EXPECT_FALSE(loaded.fonts[AppFont::ChatLog].italic());
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog], makeFont("Inter", 10));
+}
+
+TEST(FontConfigTest, ToTomlFormat)
+{
+    FontConfig cfg;
+    cfg.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+
+    const QString toml = cfg.toToml();
+    EXPECT_TRUE(toml.contains(QStringLiteral("[Fonts]")));
+    EXPECT_TRUE(toml.contains(QStringLiteral("InterfaceDefault")));
+    EXPECT_TRUE(toml.contains(QStringLiteral("\"Inter, 10\"")));
+}
+
+TEST(FontConfigTest, MalformedLinesAreSkipped)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QString filePath = writeTempFile(tmp, "fonts.toml",
+                                           "# a comment\n"
+                                           "; another comment\n"
+                                           "\n"
+                                           "StrayBeforeSection = \"Inter, 10\"\n"
+                                           "\n"
+                                           "[Other]\n"
+                                           "ChatLog = \"ShouldBeIgnored, 10\"\n"
+                                           "\n"
+                                           "[Fonts]\n"
+                                           "InterfaceDefault = \"Inter, 10\"\n"
+                                           "ChatLog = \"JetBrains Mono\", 9 # inline comment\n"
+                                           "CardText = Noto Serif, 11\n"
+                                           "AppFont::DeckList = \"Roboto, 12\"\n"
+                                           "UnknownRole = \"Inter, 10\"\n"
+                                           "QPalette::Window = \"Inter, 10\"\n"
+                                           "NoComma = \"Inter\"\n"
+                                           "EmptyFamily = \", 10\"\n"
+                                           "ZeroSize = \"Inter, 0\"\n"
+                                           "NegativeSize = \"Inter, -3\"\n"
+                                           "NotANumber = \"Inter, big\"\n"
+                                           "NotAnEntry\n");
+
+    const FontConfig loaded = FontConfig::fromFile(filePath);
+
+    ASSERT_TRUE(loaded.hasFonts());
+    EXPECT_EQ(loaded.fonts.size(), 4);
+    EXPECT_EQ(loaded.fonts[AppFont::InterfaceDefault], makeFont("Inter", 10));
+    EXPECT_EQ(loaded.fonts[AppFont::ChatLog], makeFont("JetBrains Mono", 9));
+    EXPECT_EQ(loaded.fonts[AppFont::CardText], makeFont("Noto Serif", 11));
+    EXPECT_EQ(loaded.fonts[AppFont::DeckList], makeFont("Roboto", 12));
+}
+
+TEST(FontConfigTest, FromThemeDirReadsFontsToml)
+{
+    QTemporaryDir tmp;
+    ASSERT_TRUE(tmp.isValid());
+
+    const QString themeDir = QDir(tmp.path()).absoluteFilePath("MyTheme");
+    ASSERT_TRUE(QDir().mkpath(themeDir));
+
+    FontConfig cfg;
+    cfg.fonts[AppFont::CardText] = makeFont("Noto Serif", 11);
+    writeTempFile(tmp, "MyTheme/fonts.toml", cfg.toToml());
+
+    const FontConfig loaded = FontConfig::fromThemeDir(themeDir);
+    EXPECT_EQ(loaded, cfg);
+
+    // A theme directory without fonts.toml loads as empty.
+    const QString bareDir = QDir(tmp.path()).absoluteFilePath("BareTheme");
+    ASSERT_TRUE(QDir().mkpath(bareDir));
+    EXPECT_FALSE(FontConfig::fromThemeDir(bareDir).hasFonts());
+}
+
+TEST(FontConfigTest, InequalityComparesRoles)
+{
+    FontConfig left;
+    left.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 10);
+
+    FontConfig right = left;
+    EXPECT_EQ(left, right);
+    EXPECT_FALSE(left != right);
+
+    right.fonts[AppFont::InterfaceDefault] = makeFont("Inter", 11);
+    EXPECT_NE(left, right);
+
+    right = left;
+    right.fonts[AppFont::ChatLog] = makeFont("Inter", 10);
+    EXPECT_NE(left, right);
+}
+
+// Every test brings its own main(): GTest is not guaranteed to be found on the build machines, and
+// the fallback then links the bare gtest library without gtest_main.
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/game/CMakeLists.txt

@@ -1,28 +1,18 @@
-add_executable(
-  game_smoke_test
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/cache_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/card_counter_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/shortcuts_settings.cpp
-  ${CMAKE_SOURCE_DIR}/cockatrice/src/client/network/update/client/release_channel.cpp
+cockatrice_add_test(
+  NAME
+  game_logic_test
+  SOURCES
+  game_test_main.cpp
+  card_state_test.cpp
+  card_zone_logic_test.cpp
+  game_event_handler_test.cpp
+  player_actions_test.cpp
+  replay_test.cpp
   ${VERSION_STRING_CPP}
-  game_smoke_test.cpp
+  LIBS
+  libcockatrice_game
+  INCLUDE_DIRS
+  ${CMAKE_CURRENT_SOURCE_DIR}
+  DEFINITIONS
+  GAME_TEST_DATA_DIR="${CMAKE_CURRENT_SOURCE_DIR}/data"
 )
-
-# SettingsCache is still reached from the game logic, but it lives in the application sources
-# rather than in libcockatrice_settings, so the client settings sources are compiled in here
-# exactly like loader_local_matching_test and theme_migration_test do.
-target_include_directories(game_smoke_test PRIVATE ${CMAKE_SOURCE_DIR}/cockatrice/src)
-
-target_link_libraries(
-  game_smoke_test
-  PRIVATE libcockatrice_game
-  PRIVATE Threads::Threads
-  PRIVATE ${GTEST_BOTH_LIBRARIES}
-  PRIVATE ${TEST_QT_MODULES}
-)
-
-add_test(NAME game_smoke_test COMMAND game_smoke_test)
-
-if(NOT GTEST_FOUND)
-  add_dependencies(game_smoke_test gtest)
-endif()

tests/game/card_state_test.cpp

@@ -0,0 +1,110 @@
+#include "gtest/gtest.h"
+#include <QMetaType>
+#include <QString>
+#include <QVariantList>
+#include <libcockatrice/game/board/card_state.h>
+#include <libcockatrice/utility/card_ref.h>
+
+namespace
+{
+
+CardRef cardRefFor(const QString &name)
+{
+    CardRef cardRef;
+    cardRef.name = name;
+    return cardRef;
+}
+
+} // namespace
+
+TEST(CardStateTest, AttachmentGraphKeepsBothEndsConsistent)
+{
+    CardState host(nullptr, nullptr, cardRefFor(QStringLiteral("Host")), 1);
+    CardState guest(nullptr, nullptr, cardRefFor(QStringLiteral("Guest")), 2);
+
+    guest.setAttachedTo(&host);
+    host.addAttachedCard(&guest);
+
+    EXPECT_EQ(guest.getAttachedTo(), &host);
+    ASSERT_EQ(host.getAttachedCards().size(), 1);
+    EXPECT_EQ(host.getAttachedCards().first(), &guest);
+
+    host.removeAttachedCard(&guest);
+    guest.setAttachedTo(nullptr);
+
+    EXPECT_TRUE(host.getAttachedCards().isEmpty());
+    EXPECT_EQ(guest.getAttachedTo(), nullptr);
+}
+
+TEST(CardStateTest, CountersAddUpdateAndClear)
+{
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Cat")), 1);
+    int changes = 0;
+    QObject::connect(&card, &CardState::countersChanged, [&changes]() { ++changes; });
+
+    card.insertCounter(1, 2);
+    EXPECT_EQ(card.getCounters().value(1), 2);
+
+    card.setCounter(1, 3);
+    EXPECT_EQ(card.getCounters().value(1), 3);
+
+    card.setCounter(1, 0);
+    EXPECT_FALSE(card.getCounters().contains(1));
+
+    card.setCounter(2, 1);
+    card.clearCounters();
+    EXPECT_TRUE(card.getCounters().isEmpty());
+
+    EXPECT_EQ(changes, 5);
+}
+
+TEST(CardStateTest, TapFlipAttackingAndReset)
+{
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Cat")), 1);
+    card.setTapped(true);
+    card.setFaceDown(true);
+    card.setAttacking(true);
+    card.setAnnotation(QStringLiteral("note"));
+    card.setPT(QStringLiteral("4/4"));
+    card.setDoesntUntap(true);
+    card.setDestroyOnZoneChange(true);
+    card.setColor(QStringLiteral("red"));
+    card.insertCounter(1, 2);
+
+    card.resetState(true);
+
+    EXPECT_FALSE(card.getTapped());
+    EXPECT_FALSE(card.getAttacking());
+    EXPECT_TRUE(card.getCounters().isEmpty());
+    EXPECT_TRUE(card.getPT().isEmpty());
+    EXPECT_FALSE(card.getDoesntUntap());
+    EXPECT_EQ(card.getAnnotation(), QStringLiteral("note"));
+    // resetState() deliberately leaves these three alone.
+    EXPECT_TRUE(card.getFaceDown());
+    EXPECT_EQ(card.getColor(), QStringLiteral("red"));
+    EXPECT_TRUE(card.getDestroyOnZoneChange());
+
+    card.setAnnotation(QStringLiteral("other"));
+    card.resetState(false);
+    EXPECT_TRUE(card.getAnnotation().isEmpty());
+}
+
+TEST(CardStateTest, ParsePT)
+{
+    const QVariantList plain = CardState::parsePT(QStringLiteral("3/3"));
+    ASSERT_EQ(plain.size(), 2);
+    EXPECT_EQ(plain.at(0).toString(), QStringLiteral("3"));
+    EXPECT_EQ(plain.at(1).toString(), QStringLiteral("3"));
+
+    const QVariantList negative = CardState::parsePT(QStringLiteral("-1/2"));
+    ASSERT_EQ(negative.size(), 2);
+    EXPECT_EQ(negative.at(0).typeId(), QMetaType::Int);
+    EXPECT_EQ(negative.at(0).toInt(), -1);
+    EXPECT_EQ(negative.at(1).toString(), QStringLiteral("2"));
+
+    const QVariantList star = CardState::parsePT(QStringLiteral("*"));
+    ASSERT_EQ(star.size(), 1);
+    EXPECT_EQ(star.at(0).toString(), QStringLiteral("*"));
+
+    EXPECT_TRUE(CardState::parsePT(QString()).isEmpty());
+}

tests/game/card_zone_logic_test.cpp

@@ -0,0 +1,107 @@
+#include "gtest/gtest.h"
+#include <QSignalSpy>
+#include <QString>
+#include <libcockatrice/game/board/card_state.h>
+#include <libcockatrice/game/zones/hand_zone_logic.h>
+#include <libcockatrice/game/zones/view_zone_logic.h>
+#include <libcockatrice/utility/card_ref.h>
+
+namespace
+{
+
+CardRef cardRefFor(const QString &name)
+{
+    CardRef cardRef;
+    cardRef.name = name;
+    return cardRef;
+}
+
+} // namespace
+
+TEST(CardZoneLogicTest, AddsAndTakesCardsWithoutAGraphicsSide)
+{
+    HandZoneLogic zone(nullptr, QStringLiteral("hand"), false, false, true);
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Lightning Bolt")), 7);
+
+    QSignalSpy cardAddedSpy(&zone, &CardZoneLogic::cardAdded);
+    QSignalSpy cardCountSpy(&zone, &CardZoneLogic::cardCountChanged);
+
+    zone.addCard(&card, false, 0);
+
+    ASSERT_EQ(zone.getCards().size(), 1);
+    EXPECT_EQ(zone.getCards().first(), &card);
+    EXPECT_EQ(card.getZone(), &zone);
+    EXPECT_EQ(cardAddedSpy.count(), 1);
+    EXPECT_GE(cardCountSpy.count(), 1);
+
+    EXPECT_EQ(zone.takeCard(0, 7), &card);
+    EXPECT_TRUE(zone.getCards().isEmpty());
+    EXPECT_EQ(card.getId(), 7);
+}
+
+TEST(CardZoneLogicTest, AsksTheGraphicsSideToCreateCards)
+{
+    HandZoneLogic zone(nullptr, QStringLiteral("library"), false, true, true);
+    // The graphics side owns the view logic and registers it on the zone it
+    // shows; adding a card then goes through prepareAddCard and the request
+    // signal instead of the test emitting the signal itself.
+    ZoneViewZoneLogic view(nullptr, &zone, 1, true, false, false);
+    zone.getViews().append(&view);
+
+    QSignalSpy requestSpy(&view, &CardZoneLogic::createCardRequested);
+
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Lightning Bolt")), 7);
+    zone.addCard(&card, true, 0, 0);
+
+    ASSERT_EQ(requestSpy.count(), 1);
+    const QList<QVariant> arguments = requestSpy.takeFirst();
+    const ServerInfo_Card cardInfo = arguments.at(0).value<ServerInfo_Card>();
+    EXPECT_EQ(cardInfo.id(), 7);
+    EXPECT_EQ(cardInfo.name(), "Lightning Bolt");
+    EXPECT_TRUE(arguments.at(1).toBool());
+    EXPECT_EQ(card.getZone(), &zone);
+    EXPECT_EQ(zone.getCards().size(), 1);
+}
+
+TEST(CardZoneLogicTest, MoveBetweenZonesUpdatesCardZone)
+{
+    HandZoneLogic first(nullptr, QStringLiteral("hand"), false, false, true);
+    HandZoneLogic second(nullptr, QStringLiteral("grave"), false, false, true);
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Cat")), 7);
+
+    first.addCard(&card, false, 0);
+    ASSERT_EQ(first.getCards().size(), 1);
+
+    CardState *taken = first.takeCard(0, 7);
+    ASSERT_EQ(taken, &card);
+    EXPECT_TRUE(first.getCards().isEmpty());
+
+    second.addCard(taken, false, 0);
+    EXPECT_EQ(second.getCards().size(), 1);
+    EXPECT_EQ(card.getZone(), &second);
+}
+
+TEST(CardZoneLogicTest, GetCardFindsById)
+{
+    HandZoneLogic zone(nullptr, QStringLiteral("hand"), false, false, true);
+    CardState first(nullptr, nullptr, cardRefFor(QStringLiteral("Cat")), 7);
+    CardState second(nullptr, nullptr, cardRefFor(QStringLiteral("Dog")), 8);
+
+    zone.addCard(&first, false, 0);
+    zone.addCard(&second, false, 0);
+
+    EXPECT_EQ(zone.getCard(7), &first);
+    EXPECT_EQ(zone.getCard(8), &second);
+    EXPECT_EQ(zone.getCard(99), nullptr);
+}
+
+TEST(CardZoneLogicTest, ReorganizeSignalFiresOnAdd)
+{
+    HandZoneLogic zone(nullptr, QStringLiteral("hand"), false, false, true);
+    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Cat")), 7);
+    QSignalSpy reorganizeSpy(&zone, &CardZoneLogic::reorganizeCards);
+
+    zone.addCard(&card, true, 0);
+
+    EXPECT_EQ(reorganizeSpy.count(), 1);
+}

tests/game/data/cards.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<cockatrice_carddatabase version="4">
+    <cards>
+        <card>
+            <name>Cat</name>
+            <set>CAT</set>
+            <tablerow>0</tablerow>
+            <text>Meow!</text>
+            <prop>
+                <muid>111</muid>
+                <colors>G</colors>
+                <manacost>2G</manacost>
+                <cmc>2</cmc>
+                <type>Creature — Cat</type>
+                <maintype>Creature</maintype>
+                <pt>3/3</pt>
+            </prop>
+        </card>
+        <card>
+            <name>Grizzly Bears</name>
+            <set>LEA</set>
+            <tablerow>0</tablerow>
+            <cipt>1</cipt>
+            <text></text>
+            <prop>
+                <muid>112</muid>
+                <colors>G</colors>
+                <manacost>1G</manacost>
+                <cmc>2</cmc>
+                <type>Creature — Bear</type>
+                <maintype>Creature</maintype>
+                <pt>2/2</pt>
+            </prop>
+        </card>
+        <card>
+            <name>Lightning Bolt</name>
+            <set>LEA</set>
+            <tablerow>3</tablerow>
+            <text>Lightning Bolt deals 3 damage to any target.</text>
+            <prop>
+                <muid>113</muid>
+                <colors>R</colors>
+                <manacost>R</manacost>
+                <cmc>1</cmc>
+                <type>Instant</type>
+                <maintype>Instant</maintype>
+            </prop>
+        </card>
+        <card>
+            <name>Forest</name>
+            <set>LEA</set>
+            <tablerow>2</tablerow>
+            <text>(Add G.)</text>
+            <prop>
+                <muid>114</muid>
+                <colors>G</colors>
+                <manacost></manacost>
+                <cmc>0</cmc>
+                <type>Land</type>
+                <maintype>Land</maintype>
+            </prop>
+        </card>
+    </cards>
+</cockatrice_carddatabase>

tests/game/data/spoilers.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<cockatrice_carddatabase version="4">
+    <cards />
+</cockatrice_carddatabase>

tests/game/data/tokens.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<cockatrice_carddatabase version="4">
+    <cards>
+        <card>
+            <name>Kitten</name>
+            <set>CAT</set>
+            <tablerow>0</tablerow>
+            <text></text>
+            <token>1</token>
+            <prop>
+                <muid>211</muid>
+                <colors>G</colors>
+                <manacost></manacost>
+                <cmc></cmc>
+                <type>Token</type>
+                <maintype>Token</maintype>
+                <pt>1/1</pt>
+            </prop>
+        </card>
+    </cards>
+</cockatrice_carddatabase>

tests/game/game_event_handler_test.cpp

@@ -0,0 +1,566 @@
+#include "game_test_fixture.h"
+
+#include "gtest/gtest.h"
+#include <QList>
+#include <QObject>
+#include <QPoint>
+#include <QString>
+#include <libcockatrice/game/board/card_state.h>
+#include <libcockatrice/game/board/counter_state.h>
+#include <libcockatrice/game/game_event_handler.h>
+#include <libcockatrice/game/game_meta_info.h>
+#include <libcockatrice/game/game_state.h>
+#include <libcockatrice/game/zones/table_zone_logic.h>
+#include <libcockatrice/protocol/pb/context_concede.pb.h>
+#include <libcockatrice/protocol/pb/event_attach_card.pb.h>
+#include <libcockatrice/protocol/pb/event_change_zone_properties.pb.h>
+#include <libcockatrice/protocol/pb/event_create_counter.pb.h>
+#include <libcockatrice/protocol/pb/event_create_token.pb.h>
+#include <libcockatrice/protocol/pb/event_del_counter.pb.h>
+#include <libcockatrice/protocol/pb/event_destroy_card.pb.h>
+#include <libcockatrice/protocol/pb/event_draw_cards.pb.h>
+#include <libcockatrice/protocol/pb/event_flip_card.pb.h>
+#include <libcockatrice/protocol/pb/event_game_closed.pb.h>
+#include <libcockatrice/protocol/pb/event_game_host_changed.pb.h>
+#include <libcockatrice/protocol/pb/event_game_state_changed.pb.h>
+#include <libcockatrice/protocol/pb/event_kicked.pb.h>
+#include <libcockatrice/protocol/pb/event_leave.pb.h>
+#include <libcockatrice/protocol/pb/event_move_card.pb.h>
+#include <libcockatrice/protocol/pb/event_player_properties_changed.pb.h>
+#include <libcockatrice/protocol/pb/event_set_active_phase.pb.h>
+#include <libcockatrice/protocol/pb/event_set_active_player.pb.h>
+#include <libcockatrice/protocol/pb/event_set_card_attr.pb.h>
+#include <libcockatrice/protocol/pb/event_set_card_counter.pb.h>
+#include <libcockatrice/protocol/pb/event_set_counter.pb.h>
+#include <libcockatrice/protocol/pb/game_event_container.pb.h>
+#include <libcockatrice/protocol/pb/game_event_context.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_card.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_counter.pb.h>
+#include <libcockatrice/utility/zone_names.h>
+#include <string>
+
+namespace
+{
+
+/**
+ * Wraps one player-scoped event in the container the server would send and
+ * pushes it through the real dispatcher, so the test exercises the same
+ * GameEventHandler -> PlayerEventHandler path as a live client.
+ */
+template <typename EventType>
+void sendGameEvent(GameHarness &harness,
+                   int playerId,
+                   const EventType &message,
+                   const GameEventContext *context = nullptr)
+{
+    GameEventContainer container;
+    container.set_game_id(42);
+    if (context != nullptr) {
+        container.mutable_context()->CopyFrom(*context);
+    }
+
+    GameEvent *event = container.add_event_list();
+    event->set_player_id(playerId);
+    event->MutableExtension(EventType::ext)->CopyFrom(message);
+
+    harness.game()->getGameEventHandler()->processGameEventContainer(container, harness.client(),
+                                                                     EventProcessingOptions());
+}
+
+Event_SetCardAttr cardAttrEvent(const char *zoneName, int cardId, CardAttribute attribute, const char *value)
+{
+    Event_SetCardAttr event;
+    event.set_zone_name(zoneName);
+    event.set_card_id(cardId);
+    event.set_attribute(attribute);
+    event.set_attr_value(value);
+    return event;
+}
+
+} // namespace
+
+TEST(GameEventHandlerTest, MoveCardMovesBetweenZones)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    Event_MoveCard event;
+    event.set_card_id(7);
+    event.set_start_player_id(1);
+    event.set_start_zone(ZoneNames::HAND);
+    event.set_position(0);
+    event.set_target_player_id(1);
+    event.set_target_zone(ZoneNames::TABLE);
+    event.set_x(0);
+    event.set_y(TableZoneLogic::tableRowToGridY(0));
+    event.set_new_card_id(7);
+    event.set_face_down(false);
+
+    sendGameEvent(harness, 1, event);
+
+    EXPECT_TRUE(harness.zone(ZoneNames::HAND)->getCards().isEmpty());
+    CardZoneLogic *table = harness.zone(ZoneNames::TABLE);
+    ASSERT_EQ(table->getCards().size(), 1);
+    EXPECT_EQ(table->getCards().first(), cat);
+    EXPECT_EQ(cat->getZone(), table);
+    EXPECT_EQ(cat->getId(), 7);
+    EXPECT_EQ(cat->getCardRef().name, QStringLiteral("Cat"));
+    EXPECT_FALSE(cat->getFaceDown());
+    EXPECT_EQ(cat->getPT(), QStringLiteral("3/3"));
+    EXPECT_EQ(cat->getGridPoint(), QPoint(0, TableZoneLogic::tableRowToGridY(0)));
+}
+
+TEST(GameEventHandlerTest, MoveCardFaceDownKeepsTheCardHidden)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    Event_MoveCard event;
+    event.set_card_id(7);
+    event.set_start_player_id(1);
+    event.set_start_zone(ZoneNames::HAND);
+    event.set_position(0);
+    event.set_target_player_id(1);
+    event.set_target_zone(ZoneNames::TABLE);
+    event.set_x(1);
+    event.set_y(TableZoneLogic::tableRowToGridY(2));
+    event.set_new_card_id(7);
+    event.set_face_down(true);
+
+    sendGameEvent(harness, 1, event);
+
+    ASSERT_EQ(harness.zone(ZoneNames::TABLE)->getCards().size(), 1);
+    EXPECT_TRUE(cat->getFaceDown());
+    // A face-down card keeps whatever P/T it had instead of picking up the
+    // printed one from the card database.
+    EXPECT_TRUE(cat->getPT().isEmpty());
+}
+
+TEST(GameEventHandlerTest, SetCardAttrUpdatesSingleCard)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrTapped, "1"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrAttacking, "1"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrPT, "5/5"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrAnnotation, "note"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrColor, "red"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrDoesntUntap, "1"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrFaceDown, "1"));
+
+    EXPECT_TRUE(cat->getTapped());
+    EXPECT_TRUE(cat->getAttacking());
+    EXPECT_EQ(cat->getPT(), QStringLiteral("5/5"));
+    EXPECT_EQ(cat->getAnnotation(), QStringLiteral("note"));
+    EXPECT_EQ(cat->getColor(), QStringLiteral("red"));
+    EXPECT_TRUE(cat->getDoesntUntap());
+    EXPECT_TRUE(cat->getFaceDown());
+}
+
+TEST(GameEventHandlerTest, SetCardAttrWithoutCardIdTouchesEveryCardInZone)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    CardState *bears = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Grizzly Bears"), 9);
+    ASSERT_NE(cat, nullptr);
+    ASSERT_NE(bears, nullptr);
+
+    Event_SetCardAttr event;
+    event.set_zone_name(ZoneNames::TABLE);
+    event.set_attribute(AttrAnnotation);
+    event.set_attr_value("marked");
+
+    sendGameEvent(harness, 1, event);
+
+    EXPECT_EQ(cat->getAnnotation(), QStringLiteral("marked"));
+    EXPECT_EQ(bears->getAnnotation(), QStringLiteral("marked"));
+}
+
+TEST(GameEventHandlerTest, UntapAllLeavesDoesntUntapCardsTapped)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    CardState *bears = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Grizzly Bears"), 9);
+    ASSERT_NE(cat, nullptr);
+    ASSERT_NE(bears, nullptr);
+    cat->setDoesntUntap(true);
+
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 7, AttrTapped, "1"));
+    sendGameEvent(harness, 1, cardAttrEvent(ZoneNames::TABLE, 9, AttrTapped, "1"));
+
+    Event_SetCardAttr untapAll;
+    untapAll.set_zone_name(ZoneNames::TABLE);
+    untapAll.set_attribute(AttrTapped);
+    untapAll.set_attr_value("0");
+
+    sendGameEvent(harness, 1, untapAll);
+
+    EXPECT_TRUE(cat->getTapped());
+    EXPECT_FALSE(bears->getTapped());
+}
+
+TEST(GameEventHandlerTest, SetCardCounterAddsAndRemoves)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    Event_SetCardCounter add;
+    add.set_zone_name(ZoneNames::HAND);
+    add.set_card_id(7);
+    add.set_counter_id(1);
+    add.set_counter_value(2);
+
+    sendGameEvent(harness, 1, add);
+
+    EXPECT_EQ(cat->getCounters().value(1), 2);
+
+    Event_SetCardCounter remove = add;
+    remove.set_counter_value(0);
+
+    sendGameEvent(harness, 1, remove);
+
+    EXPECT_FALSE(cat->getCounters().contains(1));
+}
+
+TEST(GameEventHandlerTest, AttachCardLinksBothEndsAndUnattachClearsThem)
+{
+    GameHarness harness;
+    CardState *host = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    CardState *guest = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Grizzly Bears"), 9);
+    ASSERT_NE(host, nullptr);
+    ASSERT_NE(guest, nullptr);
+
+    Event_AttachCard attach;
+    attach.set_start_zone(ZoneNames::TABLE);
+    attach.set_card_id(9);
+    attach.set_target_player_id(1);
+    attach.set_target_zone(ZoneNames::TABLE);
+    attach.set_target_card_id(7);
+
+    sendGameEvent(harness, 1, attach);
+
+    EXPECT_EQ(guest->getAttachedTo(), host);
+    ASSERT_EQ(host->getAttachedCards().size(), 1);
+    EXPECT_EQ(host->getAttachedCards().first(), guest);
+
+    Event_AttachCard detach;
+    detach.set_start_zone(ZoneNames::TABLE);
+    detach.set_card_id(9);
+
+    sendGameEvent(harness, 1, detach);
+
+    EXPECT_EQ(guest->getAttachedTo(), nullptr);
+    EXPECT_TRUE(host->getAttachedCards().isEmpty());
+}
+
+TEST(GameEventHandlerTest, ChangeZonePropertiesUpdatesReveal)
+{
+    GameHarness harness;
+    CardZoneLogic *deck = harness.zone(ZoneNames::DECK);
+    ASSERT_NE(deck, nullptr);
+
+    Event_ChangeZoneProperties reveal;
+    reveal.set_zone_name(ZoneNames::DECK);
+    reveal.set_always_reveal_top_card(true);
+
+    sendGameEvent(harness, 1, reveal);
+    EXPECT_TRUE(deck->getAlwaysRevealTopCard());
+
+    reveal.set_always_reveal_top_card(false);
+    sendGameEvent(harness, 1, reveal);
+    EXPECT_FALSE(deck->getAlwaysRevealTopCard());
+}
+
+TEST(GameEventHandlerTest, DrawCardsMovesNamedCardsFromDeckToHand)
+{
+    GameHarness harness;
+    ASSERT_NE(harness.addCardToZone(ZoneNames::DECK, QStringLiteral("Cat"), 7), nullptr);
+
+    Event_DrawCards draw;
+    draw.set_number(1);
+    ServerInfo_Card *cardInfo = draw.add_cards();
+    cardInfo->set_id(7);
+    cardInfo->set_name("Cat");
+
+    sendGameEvent(harness, 1, draw);
+
+    EXPECT_TRUE(harness.zone(ZoneNames::DECK)->getCards().isEmpty());
+    ASSERT_EQ(harness.zone(ZoneNames::HAND)->getCards().size(), 1);
+    CardState *drawn = harness.zone(ZoneNames::HAND)->getCards().first();
+    EXPECT_EQ(drawn->getId(), 7);
+    EXPECT_EQ(drawn->getName(), QStringLiteral("Cat"));
+}
+
+TEST(GameEventHandlerTest, FlipCardHidesAndRevealsTheCard)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    Event_FlipCard flip;
+    flip.set_zone_name(ZoneNames::TABLE);
+    flip.set_card_id(7);
+    flip.set_face_down(true);
+
+    sendGameEvent(harness, 1, flip);
+
+    EXPECT_TRUE(cat->getFaceDown());
+    // Flipping face down does not touch the card reference: the client must not
+    // learn (or overwrite) the name of a card it is not allowed to see.
+    EXPECT_EQ(cat->getName(), QStringLiteral("Cat"));
+
+    // Turning it face up carries the real printing, so the state picks it up.
+    flip.set_face_down(false);
+    flip.set_card_name("Grizzly Bears");
+
+    sendGameEvent(harness, 1, flip);
+
+    EXPECT_FALSE(cat->getFaceDown());
+    EXPECT_EQ(cat->getName(), QStringLiteral("Grizzly Bears"));
+}
+
+TEST(GameEventHandlerTest, DestroyCardRemovesItAndDetachesAttachedCards)
+{
+    GameHarness harness;
+    CardState *host = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7);
+    CardState *guest = harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Grizzly Bears"), 9);
+    ASSERT_NE(host, nullptr);
+    ASSERT_NE(guest, nullptr);
+
+    guest->setAttachedTo(host);
+    ASSERT_EQ(guest->getAttachedTo(), host);
+    ASSERT_EQ(host->getAttachedCards().size(), 1);
+
+    Event_DestroyCard destroy;
+    destroy.set_zone_name(ZoneNames::TABLE);
+    destroy.set_card_id(7);
+
+    sendGameEvent(harness, 1, destroy);
+
+    CardZoneLogic *table = harness.zone(ZoneNames::TABLE);
+    ASSERT_EQ(table->getCards().size(), 1);
+    EXPECT_EQ(table->getCards().first(), guest);
+    EXPECT_FALSE(table->getCards().contains(host));
+
+    // The attached card survives the host and is left un-attached, ready to be
+    // laid out again by the zone.
+    EXPECT_EQ(guest->getAttachedTo(), nullptr);
+    EXPECT_TRUE(host->getAttachedCards().isEmpty());
+    EXPECT_EQ(guest->getZone(), table);
+}
+
+TEST(GameEventHandlerTest, CreateTokenUsesDatabasePTUnlessFaceDown)
+{
+    GameHarness harness;
+    CardZoneLogic *table = harness.zone(ZoneNames::TABLE);
+    ASSERT_NE(table, nullptr);
+
+    QList<ServerInfo_Card> created;
+    QObject::connect(table, &CardZoneLogic::createCardRequested, table,
+                     [&created](const ServerInfo_Card &cardInfo, bool) { created.append(cardInfo); });
+
+    Event_CreateToken token;
+    token.set_zone_name(ZoneNames::TABLE);
+    token.set_card_id(11);
+    token.set_card_name("Kitten");
+    token.set_x(2);
+    token.set_y(1);
+    token.set_color("green");
+    token.set_annotation("a kitten");
+    token.set_destroy_on_zone_change(true);
+
+    sendGameEvent(harness, 1, token);
+
+    ASSERT_EQ(created.size(), 1);
+    // The event carries no P/T, so the token takes the printed one.
+    EXPECT_EQ(created.first().pt(), "1/1");
+    EXPECT_EQ(created.first().name(), "Kitten");
+    EXPECT_EQ(created.first().x(), 2);
+    EXPECT_EQ(created.first().y(), 1);
+    EXPECT_EQ(created.first().color(), "green");
+    EXPECT_EQ(created.first().annotation(), "a kitten");
+    EXPECT_TRUE(created.first().destroy_on_zone_change());
+    EXPECT_FALSE(created.first().face_down());
+
+    // An explicit P/T always wins over the database.
+    Event_CreateToken explicitPt = token;
+    explicitPt.set_card_id(12);
+    explicitPt.set_pt("3/3");
+
+    sendGameEvent(harness, 1, explicitPt);
+
+    ASSERT_EQ(created.size(), 2);
+    EXPECT_EQ(created.last().pt(), "3/3");
+
+    // A face-down token must not leak the printed P/T.
+    Event_CreateToken faceDown = token;
+    faceDown.set_card_id(13);
+    faceDown.set_face_down(true);
+
+    sendGameEvent(harness, 1, faceDown);
+
+    ASSERT_EQ(created.size(), 3);
+    EXPECT_TRUE(created.last().face_down());
+    EXPECT_TRUE(created.last().pt().empty());
+}
+
+TEST(GameEventHandlerTest, ConcedeAndUnconcedeUpdatePlayerState)
+{
+    GameHarness harness;
+    ASSERT_NE(harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7), nullptr);
+    EXPECT_FALSE(harness.player()->getConceded());
+
+    Event_PlayerPropertiesChanged properties;
+    properties.mutable_player_properties()->set_player_id(1);
+    properties.mutable_player_properties()->set_conceded(true);
+
+    GameEventContext concedeContext;
+    concedeContext.MutableExtension(Context_Concede::ext);
+
+    sendGameEvent(harness, 1, properties, &concedeContext);
+
+    EXPECT_TRUE(harness.player()->getConceded());
+    // Conceding tears the board down for that player.
+    EXPECT_TRUE(harness.zone(ZoneNames::TABLE)->getCards().isEmpty());
+
+    Event_PlayerPropertiesChanged back = properties;
+    back.mutable_player_properties()->set_conceded(false);
+
+    GameEventContext unconcedeContext;
+    unconcedeContext.MutableExtension(Context_Unconcede::ext);
+
+    sendGameEvent(harness, 1, back, &unconcedeContext);
+
+    EXPECT_FALSE(harness.player()->getConceded());
+}
+
+TEST(GameEventHandlerTest, SetActivePlayerAndPhaseUpdateGameState)
+{
+    GameHarness harness;
+    GameState *state = harness.game()->getGameState();
+    ASSERT_NE(state, nullptr);
+    EXPECT_EQ(state->getActivePlayer(), -1);
+    EXPECT_EQ(state->getCurrentPhase(), -1);
+
+    Event_SetActivePlayer setPlayer;
+    setPlayer.set_active_player_id(1);
+
+    sendGameEvent(harness, 1, setPlayer);
+
+    EXPECT_EQ(state->getActivePlayer(), 1);
+
+    Event_SetActivePhase setPhase;
+    setPhase.set_phase(3);
+
+    sendGameEvent(harness, 1, setPhase);
+
+    EXPECT_EQ(state->getCurrentPhase(), 3);
+}
+
+TEST(GameEventHandlerTest, CreateSetAndDeletePlayerCounter)
+{
+    GameHarness harness;
+
+    ServerInfo_Counter counter;
+    counter.set_id(1);
+    counter.set_name("life");
+    counter.set_radius(1);
+    counter.set_count(20);
+
+    Event_CreateCounter create;
+    create.mutable_counter_info()->CopyFrom(counter);
+
+    sendGameEvent(harness, 1, create);
+
+    CounterState *state = harness.player()->getCounters().value(1);
+    ASSERT_NE(state, nullptr);
+    EXPECT_EQ(state->getName(), QStringLiteral("life"));
+    EXPECT_EQ(state->getValue(), 20);
+    EXPECT_EQ(harness.player()->getLifeCounter(), state);
+
+    Event_SetCounter set;
+    set.set_counter_id(1);
+    set.set_value(15);
+
+    sendGameEvent(harness, 1, set);
+
+    EXPECT_EQ(state->getValue(), 15);
+
+    // Updating a counter that does not exist is a no-op, not a crash.
+    Event_SetCounter unknown = set;
+    unknown.set_counter_id(99);
+    sendGameEvent(harness, 1, unknown);
+
+    EXPECT_FALSE(harness.player()->getCounters().contains(99));
+
+    Event_DelCounter remove;
+    remove.set_counter_id(1);
+
+    sendGameEvent(harness, 1, remove);
+
+    EXPECT_FALSE(harness.player()->getCounters().contains(1));
+    EXPECT_EQ(harness.player()->getLifeCounter(), nullptr);
+}
+
+TEST(GameEventHandlerTest, LeaveRemovesThePlayer)
+{
+    GameHarness harness;
+    ASSERT_NE(harness.addCardToZone(ZoneNames::TABLE, QStringLiteral("Cat"), 7), nullptr);
+    ASSERT_NE(harness.game()->getPlayerManager()->getPlayer(1), nullptr);
+
+    Event_Leave leave;
+    leave.set_reason(Event_Leave::USER_LEFT);
+
+    sendGameEvent(harness, 1, leave);
+
+    EXPECT_EQ(harness.game()->getPlayerManager()->getPlayer(1), nullptr);
+    EXPECT_TRUE(harness.game()->getPlayerManager()->getPlayers().isEmpty());
+}
+
+TEST(GameEventHandlerTest, KickedSignalsGameClosed)
+{
+    GameHarness harness;
+
+    bool closed = false;
+    QObject::connect(harness.game()->getGameEventHandler(), &GameEventHandler::gameClosed,
+                     [&closed] { closed = true; });
+
+    sendGameEvent(harness, 1, Event_Kicked());
+
+    EXPECT_TRUE(closed);
+}
+
+TEST(GameEventHandlerTest, GameClosedMarksTheSessionClosed)
+{
+    GameHarness harness;
+    ASSERT_FALSE(harness.game()->getGameState()->isGameClosed());
+
+    Event_GameStateChanged started;
+    started.set_game_started(true);
+    sendGameEvent(harness, 1, started);
+    ASSERT_TRUE(harness.game()->getGameMetaInfo()->started());
+
+    sendGameEvent(harness, 1, Event_GameClosed());
+
+    EXPECT_TRUE(harness.game()->getGameState()->isGameClosed());
+    EXPECT_FALSE(harness.game()->getGameMetaInfo()->started());
+}
+
+TEST(GameEventHandlerTest, GameHostChangedMovesTheHostRole)
+{
+    GameHarness harness;
+
+    ServerInfo_User bob;
+    bob.set_name("Bob");
+    bob.set_user_level(ServerInfo_User::IsUser);
+    ASSERT_NE(harness.game()->getPlayerManager()->addPlayer(2, bob), nullptr);
+
+    sendGameEvent(harness, 2, Event_GameHostChanged());
+
+    EXPECT_EQ(harness.game()->getGameState()->getHostId(), 2);
+}

tests/game/game_smoke_test.cpp

@@ -1,106 +0,0 @@
-/**
- * @file game_smoke_test.cpp
- *
- * Links the game logic library into a target that contains no graphics code at all, and drives
- * the two seams the graphics layer used to own: the attachment graph on CardState and the
- * card-creation request a zone makes so the graphics side can build the matching card item.
- */
-
-#include "gtest/gtest.h"
-#include <QCoreApplication>
-#include <QLoggingCategory>
-#include <QSignalSpy>
-#include <QStandardPaths>
-#include <QTemporaryDir>
-#include <libcockatrice/game/board/card_state.h>
-#include <libcockatrice/game/zones/hand_zone_logic.h>
-
-namespace
-{
-
-CardRef cardRefFor(const QString &name)
-{
-    CardRef cardRef;
-    cardRef.name = name;
-    return cardRef;
-}
-
-} // namespace
-
-TEST(CardStateTest, AttachmentGraphKeepsBothEndsConsistent)
-{
-    CardState host(nullptr, nullptr, cardRefFor(QStringLiteral("Host")), 1);
-    CardState guest(nullptr, nullptr, cardRefFor(QStringLiteral("Guest")), 2);
-
-    guest.setAttachedTo(&host);
-    host.addAttachedCard(&guest);
-
-    EXPECT_EQ(guest.getAttachedTo(), &host);
-    ASSERT_EQ(host.getAttachedCards().size(), 1);
-    EXPECT_EQ(host.getAttachedCards().first(), &guest);
-
-    host.removeAttachedCard(&guest);
-    guest.setAttachedTo(nullptr);
-
-    EXPECT_TRUE(host.getAttachedCards().isEmpty());
-    EXPECT_EQ(guest.getAttachedTo(), nullptr);
-}
-
-TEST(CardZoneLogicTest, AddsAndTakesCardsWithoutAGraphicsSide)
-{
-    HandZoneLogic zone(nullptr, QStringLiteral("hand"), false, false, true);
-    CardState card(nullptr, nullptr, cardRefFor(QStringLiteral("Lightning Bolt")), 7);
-
-    QSignalSpy cardAddedSpy(&zone, &CardZoneLogic::cardAdded);
-    QSignalSpy cardCountSpy(&zone, &CardZoneLogic::cardCountChanged);
-
-    zone.addCard(&card, false, 0);
-
-    ASSERT_EQ(zone.getCards().size(), 1);
-    EXPECT_EQ(zone.getCards().first(), &card);
-    EXPECT_EQ(card.getZone(), &zone);
-    EXPECT_EQ(cardAddedSpy.count(), 1);
-    EXPECT_GE(cardCountSpy.count(), 1);
-
-    EXPECT_EQ(zone.takeCard(0, 7), &card);
-    EXPECT_TRUE(zone.getCards().isEmpty());
-    EXPECT_EQ(card.getId(), 7);
-}
-
-TEST(CardZoneLogicTest, AsksTheGraphicsSideToCreateCards)
-{
-    HandZoneLogic zone(nullptr, QStringLiteral("library"), false, true, true);
-    QSignalSpy requestSpy(&zone, &CardZoneLogic::createCardRequested);
-
-    ServerInfo_Card cardInfo;
-    cardInfo.set_name("Lightning Bolt");
-    cardInfo.set_id(7);
-    cardInfo.set_x(0);
-    cardInfo.set_y(1);
-
-    zone.createCardRequested(cardInfo, true);
-
-    ASSERT_EQ(requestSpy.count(), 1);
-    const QList<QVariant> arguments = requestSpy.takeFirst();
-    EXPECT_EQ(arguments.at(0).value<ServerInfo_Card>().id(), 7);
-    EXPECT_TRUE(arguments.at(1).toBool());
-}
-
-int main(int argc, char **argv)
-{
-    // Keep SettingsCache reads and writes away from the real user profile: the game logic still
-    // reaches for a handful of settings, and the client settings sources linked into this test
-    // would otherwise touch the developer's own configuration.
-    QStandardPaths::setTestModeEnabled(true);
-
-    QTemporaryDir home;
-    if (home.isValid()) {
-        qputenv("HOME", home.path().toLocal8Bit());
-    }
-
-    QCoreApplication app(argc, argv);
-    QLoggingCategory::setFilterRules("settings_cache.*=false");
-
-    ::testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

tests/game/game_test_fixture.h

@@ -0,0 +1,129 @@
+/**
+ * @file game_test_fixture.h
+ *
+ * Fixtures for tests that need a complete game/player/zone graph without the
+ * client, a server or any graphics object. Commands are captured on a recording
+ * AbstractClient, which is the same seam the real client uses.
+ */
+
+#ifndef COCKATRICE_TESTS_GAME_TEST_FIXTURE_H
+#define COCKATRICE_TESTS_GAME_TEST_FIXTURE_H
+
+#include <QList>
+#include <QMap>
+#include <QString>
+#include <QtAlgorithms>
+#include <libcockatrice/game/board/card_state.h>
+#include <libcockatrice/game/game.h>
+#include <libcockatrice/game/player/player_logic.h>
+#include <libcockatrice/game/player/player_manager.h>
+#include <libcockatrice/game/zones/card_zone_logic.h>
+#include <libcockatrice/network/client/abstract/abstract_client.h>
+#include <libcockatrice/protocol/pb/commands.pb.h>
+#include <libcockatrice/protocol/pb/event_game_joined.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_user.pb.h>
+#include <libcockatrice/utility/card_ref.h>
+#include <memory>
+#include <utility>
+
+/**
+ * Captures every command the game logic sends, instead of writing it to a socket.
+ *
+ * AbstractClient::sendCommand uses a direct signal/slot connection in the same
+ * thread, so a command is in `sent` as soon as sendCommand returns.
+ */
+class RecordingClient : public AbstractClient
+{
+public:
+    QList<CommandContainer> sent;
+
+protected:
+    void sendCommandContainer(const CommandContainer &cont) override
+    {
+        sent.append(cont);
+    }
+};
+
+/**
+ * Owns a local, single-client Game with one local player, plus the cards added
+ * to its zones.
+ */
+class GameHarness
+{
+public:
+    explicit GameHarness(int playerId = 1) : playerId_(playerId), client_(std::make_unique<RecordingClient>())
+    {
+        Event_GameJoined event;
+        event.set_host_id(playerId_);
+        event.set_player_id(playerId_);
+        event.mutable_game_info()->set_game_id(42);
+        event.mutable_game_info()->set_started(true);
+
+        QList<AbstractClient *> clients{client_.get()};
+        QMap<int, QString> roomGameTypes;
+        game_ = std::make_unique<Game>(nullptr, true, clients, event, roomGameTypes);
+
+        ServerInfo_User user;
+        user.set_name("Alice");
+        user.set_user_level(ServerInfo_User::IsUser | ServerInfo_User::IsRegistered);
+        game_->getPlayerManager()->addPlayer(playerId_, user);
+    }
+
+    ~GameHarness()
+    {
+        qDeleteAll(ownedCards_);
+        ownedCards_.clear();
+    }
+
+    GameHarness(const GameHarness &) = delete;
+    GameHarness &operator=(const GameHarness &) = delete;
+
+    [[nodiscard]] Game *game() const
+    {
+        return game_.get();
+    }
+
+    [[nodiscard]] RecordingClient *client() const
+    {
+        return client_.get();
+    }
+
+    [[nodiscard]] PlayerLogic *player() const
+    {
+        return game_->getPlayerManager()->getPlayer(playerId_);
+    }
+
+    [[nodiscard]] CardZoneLogic *zone(const QString &zoneName) const
+    {
+        return player()->getZones().value(zoneName);
+    }
+
+    CardState *addCardToZone(const QString &zoneName, const QString &cardName, int cardId)
+    {
+        CardZoneLogic *targetZone = zone(zoneName);
+        if (!targetZone) {
+            return nullptr;
+        }
+
+        auto *card = new CardState(nullptr, targetZone, CardRef{cardName, QString()}, cardId);
+        // The constructor only stores the ref; this is what fills in the card
+        // data (table row, P/T, ...) the actions read.
+        card->refreshCardInfo();
+        targetZone->addCard(card, false, 0);
+        ownedCards_.append(card);
+        return card;
+    }
+
+    [[nodiscard]] const CommandContainer &lastCommand() const
+    {
+        return client_->sent.last();
+    }
+
+private:
+    int playerId_;
+    std::unique_ptr<RecordingClient> client_;
+    std::unique_ptr<Game> game_;
+    QList<CardState *> ownedCards_;
+};
+
+#endif // COCKATRICE_TESTS_GAME_TEST_FIXTURE_H

tests/game/game_test_main.cpp

@@ -0,0 +1,126 @@
+/**
+ * @file game_test_main.cpp
+ *
+ * Test entry point for the headless game-logic suite. The game library has no
+ * graphics dependency, so a QCoreApplication is enough; the only process-wide
+ * setup left is the card database, which the game logic still reaches through
+ * CardDatabaseManager and which therefore has to exist before the first zone is
+ * constructed.
+ */
+
+#include "gtest/gtest.h"
+#include <QCoreApplication>
+#include <QDir>
+#include <QFile>
+#include <QLoggingCategory>
+#include <QStandardPaths>
+#include <QTemporaryDir>
+#include <cstdio>
+#include <cstdlib>
+#include <libcockatrice/card/database/card_database.h>
+#include <libcockatrice/card/database/card_database_manager.h>
+#include <libcockatrice/interfaces/interface_card_database_path_provider.h>
+
+namespace
+{
+
+class GameTestPathProvider : public ICardDatabasePathProvider
+{
+public:
+    explicit GameTestPathProvider(QString baseDir) : baseDir_(std::move(baseDir))
+    {
+    }
+
+    QString getCardDatabasePath() const override
+    {
+        return baseDir_ + QStringLiteral("/cards.xml");
+    }
+
+    QString getCustomCardDatabasePath() const override
+    {
+        return baseDir_ + QStringLiteral("/customsets/");
+    }
+
+    QString getTokenDatabasePath() const override
+    {
+        return baseDir_ + QStringLiteral("/tokens.xml");
+    }
+
+    QString getSpoilerCardDatabasePath() const override
+    {
+        return baseDir_ + QStringLiteral("/spoilers.xml");
+    }
+
+private:
+    QString baseDir_;
+};
+
+bool copyFixture(const QString &fileName, const QString &targetDir)
+{
+    const QString source = QString::fromUtf8(GAME_TEST_DATA_DIR) + QLatin1Char('/') + fileName;
+    const QString target = targetDir + QLatin1Char('/') + fileName;
+    if (QFile::copy(source, target)) {
+        return true;
+    }
+
+    std::fprintf(stderr, "Failed to copy test fixture %s to %s\n", qPrintable(source), qPrintable(target));
+    return false;
+}
+
+} // namespace
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+
+    // gtest_discover_tests runs the binary with --gtest_list_tests while the
+    // build is still in progress. No test runs there, and building the card
+    // database would leave process-lifetime allocations that the sanitizer
+    // leg's default leak detection reports at exit, failing discovery.
+    if (::testing::GTEST_FLAG(list_tests)) {
+        return RUN_ALL_TESTS();
+    }
+
+    QStandardPaths::setTestModeEnabled(true);
+
+    QTemporaryDir home;
+    if (!home.isValid()) {
+        std::fprintf(stderr, "Failed to create a temporary home directory\n");
+        return EXIT_FAILURE;
+    }
+    qputenv("HOME", home.path().toLocal8Bit());
+
+    QCoreApplication app(argc, argv);
+    QLoggingCategory::setFilterRules(QStringLiteral("card_database.loading=false\n"
+                                                    "card_database.loading.success_or_failure=false\n"
+                                                    "settings_cache.*=false"));
+
+    // Copy the fixtures so the database loader never writes its .cache file into
+    // the source tree, then point the singleton at the copy.
+    QTemporaryDir dataDir;
+    if (!dataDir.isValid() || !QDir().mkpath(dataDir.filePath(QStringLiteral("customsets")))) {
+        std::fprintf(stderr, "Failed to create a temporary card database directory\n");
+        return EXIT_FAILURE;
+    }
+    if (!copyFixture(QStringLiteral("cards.xml"), dataDir.path()) ||
+        !copyFixture(QStringLiteral("tokens.xml"), dataDir.path()) ||
+        !copyFixture(QStringLiteral("spoilers.xml"), dataDir.path())) {
+        return EXIT_FAILURE;
+    }
+
+    // Function-local static: constructed before the CardDatabase singleton below,
+    // so it is destroyed after it and the raw pointer stored in the manager stays
+    // valid for the database's lifetime.
+    static GameTestPathProvider pathProvider(dataDir.path());
+    CardDatabaseManager::setCardDatabasePathProvider(&pathProvider);
+
+    CardDatabase *database = CardDatabaseManager::getInstance();
+    database->loadCardDatabases();
+    if (database->getLoadStatus() != Ok) {
+        std::fprintf(stderr, "Failed to load the game test card database (status %d)\n",
+                     static_cast<int>(database->getLoadStatus()));
+        return EXIT_FAILURE;
+    }
+
+    return RUN_ALL_TESTS();
+}

tests/game/player_actions_test.cpp

@@ -0,0 +1,119 @@
+#include "game_test_fixture.h"
+
+#include "gtest/gtest.h"
+#include <QString>
+#include <libcockatrice/game/player/player_actions.h>
+#include <libcockatrice/game/zones/table_zone_logic.h>
+#include <libcockatrice/protocol/pb/command_move_card.pb.h>
+#include <libcockatrice/utility/zone_names.h>
+#include <string>
+
+TEST(PlayerActionsTest, PlayCreatureSendsMoveToTable)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    harness.player()->getPlayerActions()->playCard(cat, false);
+
+    ASSERT_FALSE(harness.client()->sent.isEmpty());
+    const CommandContainer &container = harness.lastCommand();
+    ASSERT_EQ(container.game_command_size(), 1);
+    const Command_MoveCard command = container.game_command(0).GetExtension(Command_MoveCard::ext);
+
+    EXPECT_EQ(command.start_player_id(), 1);
+    EXPECT_EQ(command.start_zone(), std::string(ZoneNames::HAND));
+    EXPECT_EQ(command.target_player_id(), 1);
+    EXPECT_EQ(command.target_zone(), std::string(ZoneNames::TABLE));
+    EXPECT_EQ(command.x(), -1);
+    EXPECT_EQ(command.y(), TableZoneLogic::tableRowToGridY(0));
+
+    ASSERT_EQ(command.cards_to_move().card_size(), 1);
+    const CardToMove &card = command.cards_to_move().card(0);
+    EXPECT_EQ(card.card_id(), 7);
+    EXPECT_TRUE(card.has_face_down());
+    EXPECT_FALSE(card.face_down());
+    EXPECT_TRUE(card.has_pt());
+    EXPECT_EQ(card.pt(), "3/3");
+    EXPECT_TRUE(card.has_tapped());
+    EXPECT_FALSE(card.tapped());
+}
+
+TEST(PlayerActionsTest, PlayInstantSendsMoveToStack)
+{
+    GameHarness harness;
+    CardState *bolt = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Lightning Bolt"), 8);
+    ASSERT_NE(bolt, nullptr);
+
+    harness.player()->getPlayerActions()->playCard(bolt, false);
+
+    ASSERT_FALSE(harness.client()->sent.isEmpty());
+    const CommandContainer &container = harness.lastCommand();
+    ASSERT_EQ(container.game_command_size(), 1);
+    const Command_MoveCard command = container.game_command(0).GetExtension(Command_MoveCard::ext);
+
+    EXPECT_EQ(command.target_zone(), std::string(ZoneNames::STACK));
+    EXPECT_EQ(command.x(), -1);
+    EXPECT_EQ(command.y(), 0);
+
+    ASSERT_EQ(command.cards_to_move().card_size(), 1);
+    const CardToMove &card = command.cards_to_move().card(0);
+    EXPECT_EQ(card.card_id(), 8);
+    // The stack branch deliberately leaves the other attributes unset.
+    EXPECT_FALSE(card.has_face_down());
+    EXPECT_FALSE(card.has_pt());
+    EXPECT_FALSE(card.has_tapped());
+}
+
+TEST(PlayerActionsTest, PlayFaceDownCreatureUsesFaceDownRow)
+{
+    GameHarness harness;
+    CardState *cat = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Cat"), 7);
+    ASSERT_NE(cat, nullptr);
+
+    harness.player()->getPlayerActions()->playCard(cat, true);
+
+    ASSERT_FALSE(harness.client()->sent.isEmpty());
+    const CommandContainer &container = harness.lastCommand();
+    ASSERT_EQ(container.game_command_size(), 1);
+    const Command_MoveCard command = container.game_command(0).GetExtension(Command_MoveCard::ext);
+
+    EXPECT_EQ(command.target_zone(), std::string(ZoneNames::TABLE));
+    EXPECT_EQ(command.x(), -1);
+    EXPECT_EQ(command.y(), TableZoneLogic::tableRowToGridY(2));
+
+    ASSERT_EQ(command.cards_to_move().card_size(), 1);
+    const CardToMove &card = command.cards_to_move().card(0);
+    EXPECT_EQ(card.card_id(), 7);
+    EXPECT_TRUE(card.has_face_down());
+    EXPECT_TRUE(card.face_down());
+    EXPECT_FALSE(card.has_pt());
+    EXPECT_TRUE(card.has_tapped());
+    EXPECT_FALSE(card.tapped());
+}
+
+TEST(PlayerActionsTest, PlayCiptCreatureSendsTapped)
+{
+    GameHarness harness;
+    CardState *bears = harness.addCardToZone(ZoneNames::HAND, QStringLiteral("Grizzly Bears"), 9);
+    ASSERT_NE(bears, nullptr);
+
+    harness.player()->getPlayerActions()->playCard(bears, false);
+
+    ASSERT_FALSE(harness.client()->sent.isEmpty());
+    const CommandContainer &container = harness.lastCommand();
+    ASSERT_EQ(container.game_command_size(), 1);
+    const Command_MoveCard command = container.game_command(0).GetExtension(Command_MoveCard::ext);
+
+    EXPECT_EQ(command.target_zone(), std::string(ZoneNames::TABLE));
+
+    ASSERT_EQ(command.cards_to_move().card_size(), 1);
+    const CardToMove &card = command.cards_to_move().card(0);
+    EXPECT_EQ(card.card_id(), 9);
+    EXPECT_TRUE(card.has_face_down());
+    EXPECT_FALSE(card.face_down());
+    EXPECT_TRUE(card.has_pt());
+    EXPECT_EQ(card.pt(), "2/2");
+    EXPECT_TRUE(card.has_tapped());
+    EXPECT_TRUE(card.tapped());
+}

tests/game/replay_test.cpp

@@ -0,0 +1,349 @@
+/**
+ * @file replay_test.cpp
+ *
+ * Replays a synthetic GameReplay through the real dispatcher. This is the only
+ * place that exercises PlayerLogic::processPlayerInfo / processCardAttachment
+ * end to end: the game state arrives as a GAME_STATE_CHANGED event and the
+ * graphics side is replaced by a small materializer that mirrors what
+ * CardZone::onCreateCardRequested does with the logic objects.
+ *
+ * The replay is built in code rather than from a .cor file: event application
+ * is deterministic (the client never shuffles on its own for a replay), and a
+ * checked-in binary fixture would be opaque about what it asserts.
+ */
+
+#include "gtest/gtest.h"
+#include <QList>
+#include <QObject>
+#include <QString>
+#include <QtAlgorithms>
+#include <libcockatrice/game/board/card_state.h>
+#include <libcockatrice/game/game_event_handler.h>
+#include <libcockatrice/game/game_state.h>
+#include <libcockatrice/game/player/event_processing_options.h>
+#include <libcockatrice/game/player/player_logic.h>
+#include <libcockatrice/game/player/player_manager.h>
+#include <libcockatrice/game/replay.h>
+#include <libcockatrice/game/zones/card_zone_logic.h>
+#include <libcockatrice/game/zones/table_zone_logic.h>
+#include <libcockatrice/protocol/pb/event_game_state_changed.pb.h>
+#include <libcockatrice/protocol/pb/event_move_card.pb.h>
+#include <libcockatrice/protocol/pb/event_set_card_attr.pb.h>
+#include <libcockatrice/protocol/pb/event_set_card_counter.pb.h>
+#include <libcockatrice/protocol/pb/game_event_container.pb.h>
+#include <libcockatrice/protocol/pb/game_replay.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_card.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_player.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_user.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_zone.pb.h>
+#include <libcockatrice/utility/card_ref.h>
+#include <libcockatrice/utility/zone_names.h>
+#include <memory>
+#include <string>
+#include <utility>
+
+namespace
+{
+
+ServerInfo_Card makeCard(int id, const QString &name, int x = -1, int y = -1)
+{
+    ServerInfo_Card card;
+    card.set_id(id);
+    card.set_name(name.toStdString());
+    card.set_x(x);
+    card.set_y(y);
+    return card;
+}
+
+ServerInfo_Zone makeZone(const char *name,
+                         ServerInfo_Zone::ZoneType type,
+                         bool withCoords,
+                         const QList<ServerInfo_Card> &cards,
+                         int cardCount = 0)
+{
+    ServerInfo_Zone zone;
+    zone.set_name(name);
+    zone.set_type(type);
+    zone.set_with_coords(withCoords);
+    for (const auto &card : cards) {
+        zone.add_card_list()->CopyFrom(card);
+    }
+    if (cardCount > 0) {
+        zone.set_card_count(cardCount);
+    }
+    return zone;
+}
+
+ServerInfo_Player makePlayer(int playerId, const QString &name, const QList<ServerInfo_Zone> &zones)
+{
+    ServerInfo_Player player;
+    ServerInfo_PlayerProperties *properties = player.mutable_properties();
+    properties->set_player_id(playerId);
+    properties->mutable_user_info()->set_name(name.toStdString());
+    properties->mutable_user_info()->set_user_level(ServerInfo_User::IsUser);
+    for (const auto &zone : zones) {
+        player.add_zone_list()->CopyFrom(zone);
+    }
+    return player;
+}
+
+template <typename EventType> GameEventContainer makeContainer(int playerId, const EventType &message)
+{
+    GameEventContainer container;
+    container.set_game_id(42);
+
+    GameEvent *event = container.add_event_list();
+    event->set_player_id(playerId);
+    event->MutableExtension(EventType::ext)->CopyFrom(message);
+
+    return container;
+}
+
+/**
+ * Stands in for the graphics side of a replay: when the logic asks for a card
+ * item, create the CardState and add it to the zone, copying the state fields
+ * the real CardItem::processCardInfo applies.
+ *
+ * The production view owns the visual item; the state itself is all a headless
+ * test needs, and this is the smallest thing that lets processPlayerInfo build
+ * a real zone.
+ */
+class HeadlessZoneView : public QObject
+{
+public:
+    using QObject::QObject;
+
+    ~HeadlessZoneView() override
+    {
+        qDeleteAll(cards_);
+        cards_.clear();
+    }
+
+    void attach(PlayerLogic *player)
+    {
+        for (CardZoneLogic *zone : player->getZones()) {
+            connect(zone, &CardZoneLogic::createCardRequested, this,
+                    [this, zone](const ServerInfo_Card &cardInfo, bool reorganize) {
+                        materialize(zone, cardInfo, reorganize);
+                    });
+        }
+    }
+
+private:
+    void materialize(CardZoneLogic *zone, const ServerInfo_Card &info, bool reorganize)
+    {
+        const CardRef cardRef{QString::fromStdString(info.name()), QString::fromStdString(info.provider_id())};
+        auto *card = new CardState(nullptr, zone, cardRef, info.id());
+        // The real CardItem constructor refreshes the card info before
+        // processCardInfo overwrites the state fields.
+        card->refreshCardInfo();
+
+        card->clearCounters();
+        for (int i = 0; i < info.counter_list_size(); ++i) {
+            card->insertCounter(info.counter_list(i).id(), info.counter_list(i).value());
+        }
+        card->setAttacking(info.attacking());
+        card->setFaceDown(info.face_down());
+        card->setPT(QString::fromStdString(info.pt()));
+        card->setAnnotation(QString::fromStdString(info.annotation()));
+        card->setColor(QString::fromStdString(info.color()));
+        card->setTapped(info.tapped());
+        card->setDestroyOnZoneChange(info.destroy_on_zone_change());
+        card->setDoesntUntap(info.doesnt_untap());
+
+        zone->addCard(card, reorganize, info.x(), info.y());
+        cards_.append(card);
+    }
+
+    QList<CardState *> cards_;
+};
+
+/** Owns a Replay built from a GameReplay and feeds its containers through it. */
+class ReplayHarness
+{
+public:
+    explicit ReplayHarness(GameReplay replay)
+        : replayProto_(std::move(replay)), view_(std::make_unique<HeadlessZoneView>()),
+          replay_(std::make_unique<Replay>(nullptr, &replayProto_, false))
+    {
+        QObject::connect(replay_->getPlayerManager(), &PlayerManager::playerAdded, view_.get(),
+                         &HeadlessZoneView::attach);
+    }
+
+    ReplayHarness(const ReplayHarness &) = delete;
+    ReplayHarness &operator=(const ReplayHarness &) = delete;
+
+    void processAll()
+    {
+        for (const GameEventContainer &container : replayProto_.event_list()) {
+            replay_->getGameEventHandler()->processGameEventContainer(container, nullptr, EventProcessingOptions());
+        }
+    }
+
+    [[nodiscard]] Replay *replay() const
+    {
+        return replay_.get();
+    }
+
+    [[nodiscard]] PlayerLogic *player(int playerId) const
+    {
+        return replay_->getPlayerManager()->getPlayer(playerId);
+    }
+
+private:
+    GameReplay replayProto_;
+    std::unique_ptr<HeadlessZoneView> view_;
+    std::unique_ptr<Replay> replay_;
+};
+
+GameReplay makeReplay(const QList<GameEventContainer> &containers)
+{
+    GameReplay replay;
+    replay.mutable_game_info()->set_game_id(42);
+    replay.mutable_game_info()->set_started(true);
+    for (const auto &container : containers) {
+        replay.add_event_list()->CopyFrom(container);
+    }
+    return replay;
+}
+
+Event_GameStateChanged initialGameState()
+{
+    Event_GameStateChanged state;
+    state.set_game_started(true);
+    state.set_active_player_id(1);
+    state.set_active_phase(0);
+    return state;
+}
+
+} // namespace
+
+TEST(ReplayTest, MaterializesGameStateZonesAndAttachments)
+{
+    Event_GameStateChanged state = initialGameState();
+
+    ServerInfo_Card cat = makeCard(7, QStringLiteral("Cat"));
+    // Cross-player attachment: Alice's card is attached to Bob's creature.
+    cat.set_attach_player_id(2);
+    cat.set_attach_zone(ZoneNames::TABLE);
+    cat.set_attach_card_id(9);
+
+    const ServerInfo_Player alice = makePlayer(1, QStringLiteral("Alice"),
+                                               {makeZone(ZoneNames::HAND, ServerInfo_Zone::PrivateZone, false, {cat}),
+                                                makeZone(ZoneNames::TABLE, ServerInfo_Zone::PublicZone, true,
+                                                         {makeCard(9, QStringLiteral("Grizzly Bears"), 2, 1)}),
+                                                makeZone(ZoneNames::DECK, ServerInfo_Zone::HiddenZone, false, {}, 2)});
+    const ServerInfo_Player bob = makePlayer(2, QStringLiteral("Bob"),
+                                             {makeZone(ZoneNames::TABLE, ServerInfo_Zone::PublicZone, true,
+                                                       {makeCard(9, QStringLiteral("Grizzly Bears"), 1, 0)})});
+
+    state.add_player_list()->CopyFrom(alice);
+    state.add_player_list()->CopyFrom(bob);
+
+    ReplayHarness harness(makeReplay({makeContainer(-1, state)}));
+    harness.processAll();
+
+    PlayerLogic *aliceLogic = harness.player(1);
+    PlayerLogic *bobLogic = harness.player(2);
+    ASSERT_NE(aliceLogic, nullptr);
+    ASSERT_NE(bobLogic, nullptr);
+
+    CardZoneLogic *hand = aliceLogic->getZones().value(ZoneNames::HAND);
+    CardZoneLogic *table = aliceLogic->getZones().value(ZoneNames::TABLE);
+    CardZoneLogic *deck = aliceLogic->getZones().value(ZoneNames::DECK);
+    ASSERT_NE(hand, nullptr);
+    ASSERT_NE(table, nullptr);
+    ASSERT_NE(deck, nullptr);
+
+    ASSERT_EQ(hand->getCards().size(), 1);
+    CardState *catState = hand->getCards().first();
+    EXPECT_EQ(catState->getId(), 7);
+    EXPECT_EQ(catState->getName(), QStringLiteral("Cat"));
+
+    ASSERT_EQ(table->getCards().size(), 1);
+    CardState *host = table->getCards().first();
+    EXPECT_EQ(host->getName(), QStringLiteral("Grizzly Bears"));
+    EXPECT_EQ(host->getGridPoint(), QPoint(2, 1));
+
+    // The hidden deck only carries a count, and the view materializes that many
+    // unknown cards.
+    EXPECT_EQ(deck->getCards().size(), 2);
+    for (const CardState *hidden : deck->getCards()) {
+        EXPECT_EQ(hidden->getId(), -1);
+    }
+
+    // processCardAttachment links both sides after every player is materialized.
+    CardZoneLogic *bobTable = bobLogic->getZones().value(ZoneNames::TABLE);
+    ASSERT_NE(bobTable, nullptr);
+    ASSERT_EQ(bobTable->getCards().size(), 1);
+    CardState *bobHost = bobTable->getCards().first();
+    EXPECT_EQ(catState->getAttachedTo(), bobHost);
+    ASSERT_EQ(bobHost->getAttachedCards().size(), 1);
+    EXPECT_EQ(bobHost->getAttachedCards().first(), catState);
+    // The identically numbered card on Alice's own table is a different card.
+    EXPECT_TRUE(host->getAttachedCards().isEmpty());
+
+    EXPECT_TRUE(harness.replay()->getGameState()->isGameStateKnown());
+}
+
+TEST(ReplayTest, AppliesMovesAttributesAndCountersInOrder)
+{
+    Event_GameStateChanged state = initialGameState();
+    state.add_player_list()->CopyFrom(makePlayer(
+        1, QStringLiteral("Alice"),
+        {makeZone(ZoneNames::HAND, ServerInfo_Zone::PrivateZone, false, {makeCard(7, QStringLiteral("Cat"))}),
+         makeZone(ZoneNames::TABLE, ServerInfo_Zone::PublicZone, true,
+                  {makeCard(9, QStringLiteral("Grizzly Bears"), 0, TableZoneLogic::tableRowToGridY(0))}),
+         makeZone(ZoneNames::DECK, ServerInfo_Zone::HiddenZone, false, {}, 2)}));
+
+    Event_MoveCard move;
+    move.set_card_id(7);
+    move.set_start_player_id(1);
+    move.set_start_zone(ZoneNames::HAND);
+    move.set_position(0);
+    move.set_target_player_id(1);
+    move.set_target_zone(ZoneNames::TABLE);
+    move.set_x(3);
+    move.set_y(TableZoneLogic::tableRowToGridY(1));
+    move.set_new_card_id(7);
+    move.set_face_down(false);
+
+    Event_SetCardAttr tap;
+    tap.set_zone_name(ZoneNames::TABLE);
+    tap.set_card_id(7);
+    tap.set_attribute(AttrTapped);
+    tap.set_attr_value("1");
+
+    Event_SetCardCounter counter;
+    counter.set_zone_name(ZoneNames::TABLE);
+    counter.set_card_id(7);
+    counter.set_counter_id(1);
+    counter.set_counter_value(2);
+
+    ReplayHarness harness(makeReplay(
+        {makeContainer(-1, state), makeContainer(1, move), makeContainer(1, tap), makeContainer(1, counter)}));
+    harness.processAll();
+
+    PlayerLogic *alice = harness.player(1);
+    ASSERT_NE(alice, nullptr);
+    CardZoneLogic *hand = alice->getZones().value(ZoneNames::HAND);
+    CardZoneLogic *table = alice->getZones().value(ZoneNames::TABLE);
+    ASSERT_NE(hand, nullptr);
+    ASSERT_NE(table, nullptr);
+
+    EXPECT_TRUE(hand->getCards().isEmpty());
+    ASSERT_EQ(table->getCards().size(), 2);
+
+    CardState *moved = table->getCard(7);
+    ASSERT_NE(moved, nullptr);
+    EXPECT_EQ(moved->getGridPoint(), QPoint(3, TableZoneLogic::tableRowToGridY(1)));
+    EXPECT_EQ(moved->getPT(), QStringLiteral("3/3"));
+    EXPECT_TRUE(moved->getTapped());
+    EXPECT_EQ(moved->getCounters().value(1), 2);
+
+    // The untouched creature keeps its own position and state.
+    CardState *bears = table->getCard(9);
+    ASSERT_NE(bears, nullptr);
+    EXPECT_EQ(bears->getGridPoint(), QPoint(0, TableZoneLogic::tableRowToGridY(0)));
+    EXPECT_FALSE(bears->getTapped());
+}

tests/icon_assets/CMakeLists.txt

@@ -0,0 +1,3 @@
+cockatrice_add_test(
+  NAME icon_assets_test SOURCES icon_assets_test.cpp DEFINITIONS COCKATRICE_SOURCE_DIR="${CMAKE_SOURCE_DIR}"
+)

tests/icon_assets/icon_assets_test.cpp

@@ -0,0 +1,241 @@
+#include <QColor>
+#include <QDir>
+#include <QDirIterator>
+#include <QFile>
+#include <QFileInfo>
+#include <QRegularExpression>
+#include <QSet>
+#include <QString>
+#include <QStringList>
+#include <QXmlStreamReader>
+#include <gtest/gtest.h>
+
+namespace
+{
+const QString ICONS_RELATIVE_PATH = QStringLiteral("cockatrice/resources/icons");
+
+QString iconsDir()
+{
+    return QDir(QStringLiteral(COCKATRICE_SOURCE_DIR)).absoluteFilePath(ICONS_RELATIVE_PATH);
+}
+
+/** @brief True for content art that is allowed to carry full color. */
+bool isContentArt(const QString &relativePath)
+{
+    return relativePath.startsWith(QStringLiteral("mana/"));
+}
+
+QString violation(const QString &rule, const QString &relativePath)
+{
+    return rule + QLatin1Char(' ') + relativePath;
+}
+
+/**
+ * @brief Reads one SVG and returns true when the root carries a usable viewBox.
+ *
+ * Also reports malformed XML and editor-only metadata through the out params.
+ */
+bool inspectSvg(const QString &absolutePath,
+                bool &validXml,
+                bool &hasViewBox,
+                bool &hasEditorMetadata,
+                bool &hasPhysicalSize)
+{
+    validXml = false;
+    hasViewBox = false;
+    hasEditorMetadata = false;
+    hasPhysicalSize = false;
+
+    QFile file(absolutePath);
+    if (!file.open(QIODevice::ReadOnly)) {
+        return false;
+    }
+
+    QXmlStreamReader reader(&file);
+    bool sawRoot = false;
+
+    while (!reader.atEnd()) {
+        reader.readNext();
+
+        if (reader.hasError()) {
+            return false;
+        }
+
+        if (!reader.isStartElement()) {
+            continue;
+        }
+
+        if (!sawRoot) {
+            sawRoot = true;
+            if (reader.name() != QStringLiteral("svg")) {
+                return false;
+            }
+            const QString viewBox = reader.attributes().value(QStringLiteral("viewBox")).toString().simplified();
+            hasViewBox = viewBox == QStringLiteral("0 0 24 24");
+            hasPhysicalSize = !reader.attributes().value(QStringLiteral("width")).isEmpty() ||
+                              !reader.attributes().value(QStringLiteral("height")).isEmpty();
+        }
+
+        if (reader.name() == QStringLiteral("metadata") || reader.name() == QStringLiteral("namedview")) {
+            hasEditorMetadata = true;
+        }
+
+        for (const QXmlStreamAttribute &attribute : reader.attributes()) {
+            const QString prefix = attribute.prefix().toString();
+            if (prefix == QStringLiteral("inkscape") || prefix == QStringLiteral("sodipodi") ||
+                prefix == QStringLiteral("dc") || prefix == QStringLiteral("cc") || prefix == QStringLiteral("rdf")) {
+                hasEditorMetadata = true;
+            }
+        }
+    }
+
+    validXml = sawRoot && !reader.hasError();
+    return validXml;
+}
+
+bool isAllowedPaintValue(const QString &value)
+{
+    const QString normalized = value.trimmed().toLower();
+    return normalized.isEmpty() || normalized == QStringLiteral("none") ||
+           normalized == QStringLiteral("currentcolor") || normalized == QStringLiteral("inherit") ||
+           normalized == QStringLiteral("context-fill") || normalized == QStringLiteral("context-stroke") ||
+           normalized.startsWith(QStringLiteral("url("));
+}
+
+QRegularExpression paintValuePattern()
+{
+    static const QRegularExpression pattern(
+        QStringLiteral(R"re((?:fill|stroke|stop-color|color)\s*[:=]\s*["']?\s*([^"'\s;>]+))re"),
+        QRegularExpression::CaseInsensitiveOption);
+    return pattern;
+}
+
+bool hasHardcodedColor(const QString &absolutePath)
+{
+    QFile file(absolutePath);
+    if (!file.open(QIODevice::ReadOnly)) {
+        return false;
+    }
+
+    const QString content = QString::fromUtf8(file.readAll());
+    auto matches = paintValuePattern().globalMatch(content);
+    while (matches.hasNext()) {
+        const QString value = matches.next().captured(1).trimmed();
+        if (isAllowedPaintValue(value)) {
+            continue;
+        }
+        const QString normalized = value.toLower();
+        if (normalized.startsWith(QLatin1Char('#')) || normalized.contains(QStringLiteral("rgb(")) ||
+            normalized.contains(QStringLiteral("hsl(")) || QColor(value).isValid()) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool hasCurrentColorToken(const QString &absolutePath)
+{
+    QFile file(absolutePath);
+    if (!file.open(QIODevice::ReadOnly)) {
+        return false;
+    }
+
+    const QString content = QString::fromUtf8(file.readAll());
+    auto matches = paintValuePattern().globalMatch(content);
+    while (matches.hasNext()) {
+        if (matches.next().captured(1).trimmed().compare(QStringLiteral("currentColor"), Qt::CaseInsensitive) == 0) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool isSchemeVariant(const QString &fileName)
+{
+    return fileName.contains(QStringLiteral("-dark."), Qt::CaseInsensitive) ||
+           fileName.contains(QStringLiteral("-light."), Qt::CaseInsensitive);
+}
+
+bool hasColorInFilename(const QString &fileName)
+{
+    static const QRegularExpression colorSuffix(
+        QStringLiteral(R"(_(green|blue|red|yellow|black|white|gray|grey)\.svg$)"),
+        QRegularExpression::CaseInsensitiveOption);
+    return colorSuffix.match(fileName).hasMatch();
+}
+
+/** @brief Collects every current violation as "rule relative/path.svg". */
+QSet<QString> collectViolations()
+{
+    QSet<QString> violations;
+
+    QDirIterator it(iconsDir(), QDir::Files, QDirIterator::Subdirectories);
+    while (it.hasNext()) {
+        it.next();
+        const QFileInfo info = it.fileInfo();
+        const QString relativePath = QDir(iconsDir()).relativeFilePath(info.absoluteFilePath());
+        if (isContentArt(relativePath)) {
+            continue;
+        }
+        if (info.suffix().compare(QStringLiteral("svg"), Qt::CaseInsensitive) != 0) {
+            violations.insert(violation(QStringLiteral("raster"), relativePath));
+            continue;
+        }
+
+        bool validXml = false;
+        bool hasViewBox = false;
+        bool hasEditorMetadata = false;
+        bool hasPhysicalSize = false;
+        inspectSvg(info.absoluteFilePath(), validXml, hasViewBox, hasEditorMetadata, hasPhysicalSize);
+
+        if (!validXml) {
+            violations.insert(violation(QStringLiteral("xml"), relativePath));
+        }
+        if (validXml && !hasViewBox) {
+            violations.insert(violation(QStringLiteral("viewbox"), relativePath));
+        }
+        if (hasPhysicalSize) {
+            violations.insert(violation(QStringLiteral("physical-size"), relativePath));
+        }
+        if (hasEditorMetadata) {
+            violations.insert(violation(QStringLiteral("editor-metadata"), relativePath));
+        }
+        if (hasHardcodedColor(info.absoluteFilePath()) && !isSchemeVariant(info.fileName())) {
+            violations.insert(violation(QStringLiteral("hardcoded-color"), relativePath));
+        }
+        if (!hasCurrentColorToken(info.absoluteFilePath()) && !isSchemeVariant(info.fileName())) {
+            violations.insert(violation(QStringLiteral("no-token"), relativePath));
+        }
+        if (hasColorInFilename(info.fileName())) {
+            violations.insert(violation(QStringLiteral("color-filename"), relativePath));
+        }
+    }
+
+    return violations;
+}
+
+QString formatSet(const QSet<QString> &entries)
+{
+    QStringList lines(entries.begin(), entries.end());
+    lines.sort();
+    return lines.join(QLatin1Char('\n'));
+}
+
+} // namespace
+
+/**
+ * @brief Every UI glyph follows the palette-token rules.
+ *
+ * The legacy set was paid down icon by icon, so no baseline grandfathers
+ * violations: a new violation fails right here. Scheme variants
+ * (`*-dark.svg`/`*-light.svg`) and mana art are exempt inside collectViolations().
+ */
+TEST(IconAssets, AssetsFollowTheRules)
+{
+    ASSERT_TRUE(QDir::isAbsolutePath(iconsDir()));
+    ASSERT_TRUE(QDir(iconsDir()).exists()) << "Missing icon directory: " << iconsDir().toStdString();
+
+    const QSet<QString> violations = collectViolations();
+    EXPECT_TRUE(violations.isEmpty()) << "Icon rule violations. Fix the icon; do not add exceptions:\n"
+                                      << formatSet(violations).toStdString();
+}

tests/local_client_lifetime_test.cpp

@@ -0,0 +1,149 @@
+/**
+ * @file local_client_lifetime_test.cpp
+ * @brief Tests that a LocalClient survives the death of the LocalServer it talks to.
+ * @ingroup Tests
+ */
+
+#include <QCoreApplication>
+#include <QDebug>
+#include <QMessageLogContext>
+#include <QString>
+#include <QStringList>
+#include <cstdio>
+#include <cstring>
+#include <gtest/gtest.h>
+#include <libcockatrice/network/client/local/local_client.h>
+#include <libcockatrice/network/server/local/local_server.h>
+#include <libcockatrice/network/server/local/local_server_interface.h>
+#include <libcockatrice/protocol/pb/commands.pb.h>
+#include <libcockatrice/rng/rng_abstract.h>
+#include <memory>
+
+// The server library refers to this global; the real applications define it in main.cpp.
+RNG_Abstract *rng = nullptr;
+
+namespace
+{
+
+// GTest's main() creates no QCoreApplication, which QObject::deleteLater() needs.
+const QCoreApplication &application()
+{
+    static int argc = 1;
+    static char executable[] = "local_client_lifetime_test";
+    static char *argv[] = {executable, nullptr};
+    static const QCoreApplication app(argc, argv);
+    return app;
+}
+
+/// Collects the warnings one logging category emits while this object is alive.
+///
+/// The handler is process-global and Qt does not nest handlers, so only one capture can be
+/// installed at a time; GTest running one case at a time is what makes that safe.
+class CategoryWarningCapture
+{
+public:
+    explicit CategoryWarningCapture(const char *_category) : category(_category)
+    {
+        previousHandler = qInstallMessageHandler(captureMessage);
+        s_active = this;
+    }
+
+    ~CategoryWarningCapture()
+    {
+        qInstallMessageHandler(previousHandler);
+        s_active = nullptr;
+    }
+
+    CategoryWarningCapture(const CategoryWarningCapture &) = delete;
+    CategoryWarningCapture &operator=(const CategoryWarningCapture &) = delete;
+
+    const QStringList &warnings() const
+    {
+        return capturedWarnings;
+    }
+
+private:
+    static void captureMessage(QtMsgType type, const QMessageLogContext &context, const QString &message)
+    {
+        if (s_active != nullptr && type == QtWarningMsg && context.category != nullptr &&
+            std::strcmp(s_active->category, context.category) == 0) {
+            s_active->capturedWarnings.append(message);
+        }
+
+        // Forward everything else, so a failure elsewhere in the test is still visible.
+        if (previousHandler != nullptr) {
+            previousHandler(type, context, message);
+            return;
+        }
+        std::fprintf(stderr, "%s\n", qPrintable(qFormatLogMessage(type, context, message)));
+    }
+
+    const char *category;
+    QStringList capturedWarnings;
+
+    static CategoryWarningCapture *s_active;
+    static QtMessageHandler previousHandler;
+};
+
+CategoryWarningCapture *CategoryWarningCapture::s_active = nullptr;
+QtMessageHandler CategoryWarningCapture::previousHandler = nullptr;
+
+class LocalClientLifetimeTest : public ::testing::Test
+{
+protected:
+    void SetUp() override
+    {
+        (void)application();
+
+        server = std::make_unique<LocalServer>();
+        LocalServerInterface *lsi = server->newConnection();
+        ASSERT_NE(lsi, nullptr);
+        // Building the client logs in and joins room 0 through that interface, exactly as
+        // MainWindow::startLocalGame() does.
+        client = std::make_unique<LocalClient>(lsi, QStringLiteral("lifetime-test-player"),
+                                               QStringLiteral("lifetime-test-client-id"));
+    }
+
+    void TearDown() override
+    {
+        // Either case may already have deleted one of these.
+        client.reset();
+        server.reset();
+    }
+
+    std::unique_ptr<LocalServer> server;
+    std::unique_ptr<LocalClient> client;
+};
+
+TEST_F(LocalClientLifetimeTest, SendAfterServerDeletedIsDropped)
+{
+    server.reset(); // also destroys the LocalServerInterface the client was built on
+
+    CategoryWarningCapture capture("local_client");
+    // A default container stands in for a command still queued when the local game ended.
+    client->sendCommandContainer(CommandContainer());
+
+    ASSERT_EQ(capture.warnings().size(), 1);
+    EXPECT_TRUE(capture.warnings().first().contains(QStringLiteral("dropping command")))
+        << capture.warnings().first().toStdString();
+
+    // The surviving client is intact: reading its state must not touch the deleted interface.
+    EXPECT_EQ(client->getUserName(), QStringLiteral("lifetime-test-player"));
+}
+
+TEST_F(LocalClientLifetimeTest, DestroyingClientAfterServerIsSafe)
+{
+    server.reset();
+
+    CategoryWarningCapture capture("local_client");
+    client.reset(); // must neither crash nor touch the destroyed interface
+
+    // The destructor itself must have been silent.
+    EXPECT_TRUE(capture.warnings().isEmpty());
+
+    // A working capture proves the emptiness above is real rather than a broken handler.
+    qCWarning(LocalClientLog) << "local_client_lifetime_test capture self-check";
+    EXPECT_EQ(capture.warnings().size(), 1);
+}
+
+} // namespace

tests/model_contract/CMakeLists.txt

@@ -0,0 +1,17 @@
+cockatrice_add_test(
+  NAME
+  model_contract_test
+  SOURCES
+  ${VERSION_STRING_CPP}
+  model_contract_test.cpp
+  LIBS
+  libcockatrice_models
+  libcockatrice_card
+  libcockatrice_deck_list
+  libcockatrice_settings
+  INCLUDE_DIRS
+  ${CMAKE_CURRENT_SOURCE_DIR}/../support
+  ${CMAKE_CURRENT_SOURCE_DIR}/../carddatabase
+  DEFINITIONS
+  CARDDB_DATADIR="${CMAKE_SOURCE_DIR}/tests/carddatabase/data/"
+)

tests/model_contract/model_contract_test.cpp

@@ -0,0 +1,137 @@
+#include "libcockatrice/deck_list/deck_list.h"
+#include "libcockatrice/deck_list/tree/inner_deck_list_node.h"
+#include "libcockatrice/models/database/card_database_display_model.h"
+#include "libcockatrice/models/database/card_database_model.h"
+#include "libcockatrice/models/database/card_set/card_sets_model.h"
+#include "libcockatrice/models/deck_list/deck_list_model.h"
+#include "model_contract_checker.h"
+#include "test_card_database_path_provider.h"
+
+#include "gtest/gtest.h"
+#include <QAbstractItemModel>
+#include <QCoreApplication>
+#include <QModelIndex>
+#include <QSharedPointer>
+#include <QSignalSpy>
+#include <QString>
+#include <QTemporaryDir>
+#include <QVariant>
+#include <libcockatrice/card/card_info.h>
+#include <libcockatrice/card/database/card_database.h>
+#include <libcockatrice/card/game_specific_terms.h>
+#include <libcockatrice/card/printing/exact_card.h>
+#include <libcockatrice/interfaces/noop_card_preference_provider.h>
+#include <libcockatrice/interfaces/noop_card_set_priority_controller.h>
+#include <libcockatrice/settings/download_settings.h>
+
+namespace
+{
+QSharedPointer<DeckList> makeDeck()
+{
+    return QSharedPointer<DeckList>(new DeckList());
+}
+
+void loadCardDatabase(CardDatabase &database)
+{
+    database.loadCardDatabases();
+    ASSERT_EQ(database.getLoadStatus(), Ok);
+}
+
+TEST(ModelContract, DeckListModelKeepsContractWhileZonesAndCardsChange)
+{
+    const QSharedPointer<DeckList> deck = makeDeck();
+    DeckListModel model(nullptr, deck);
+
+    test_support::ModelContractChecker checker(&model);
+
+    ASSERT_NE(deck->getTree()->addCustomZone(DECK_ZONE_MAIN, "Removal"), nullptr);
+    model.rebuildTree();
+
+    CardInfoPtr bolt = CardInfo::newInstance("Lightning Bolt");
+    const QModelIndex added = model.addCard(ExactCard(bolt), DECK_ZONE_MAIN);
+    ASSERT_TRUE(added.isValid());
+
+    CardInfoPtr bears = CardInfo::newInstance("Grizzly Bears");
+    bears->setProperty(Mtg::MainCardType, "Creature");
+    const QModelIndex grouped = model.addCard(ExactCard(bears), "Removal");
+    ASSERT_TRUE(grouped.isValid());
+
+    ASSERT_TRUE(model.removeRows(grouped.row(), 1, grouped.parent()));
+}
+
+TEST(ModelContract, DeckListModelEmitsCardAddedSignal)
+{
+    const QSharedPointer<DeckList> deck = makeDeck();
+    DeckListModel model(nullptr, deck);
+    QSignalSpy spy(&model, &DeckListModel::cardAddedAt);
+
+    const QModelIndex added = model.addCard(ExactCard(CardInfo::newInstance("Lightning Bolt")), DECK_ZONE_MAIN);
+
+    ASSERT_TRUE(added.isValid());
+    EXPECT_EQ(spy.count(), 1);
+}
+
+TEST(ModelContract, CardDatabaseModelAndDisplayProxyKeepContract)
+{
+    CardDatabase database(nullptr, new NoopCardPreferenceProvider(), new TestCardDatabasePathProvider(),
+                          new NoopCardSetPriorityController());
+    ASSERT_NO_FATAL_FAILURE(loadCardDatabase(database));
+
+    CardDatabaseModel source(&database, false);
+    test_support::ModelContractChecker sourceChecker(&source);
+
+    CardDatabaseDisplayModel display;
+    display.setSourceModel(&source);
+    test_support::ModelContractChecker displayChecker(&display);
+
+    ASSERT_GT(source.rowCount(), 0);
+    EXPECT_EQ(display.rowCount(), source.rowCount());
+
+    // A card row is a leaf, so its index must not claim child columns. The
+    // tester does not check this, hence the explicit assertion.
+    const QModelIndex sourceCard = source.index(0, 0);
+    ASSERT_TRUE(sourceCard.isValid());
+    EXPECT_EQ(source.columnCount(sourceCard), 0);
+    const QModelIndex displayCard = display.index(0, 0);
+    ASSERT_TRUE(displayCard.isValid());
+    EXPECT_EQ(display.columnCount(displayCard), 0);
+
+    QSignalSpy dirtySpy(&display, &CardDatabaseDisplayModel::modelDirty);
+    display.setCardName("Do");
+    ASSERT_TRUE(dirtySpy.wait());
+    EXPECT_GT(display.rowCount(), 0);
+    EXPECT_LT(display.rowCount(), source.rowCount());
+}
+
+TEST(ModelContract, SetsModelKeepsContract)
+{
+    CardDatabase database(nullptr, new NoopCardPreferenceProvider(), new TestCardDatabasePathProvider(),
+                          new NoopCardSetPriorityController());
+    ASSERT_NO_FATAL_FAILURE(loadCardDatabase(database));
+
+    SetsModel model(&database);
+    test_support::ModelContractChecker checker(&model);
+
+    ASSERT_GT(model.rowCount(), 0);
+    ASSERT_GT(model.columnCount(), 0);
+}
+
+TEST(ModelContract, SettingsSignalIsObservableWithQSignalSpy)
+{
+    QTemporaryDir tempDir;
+    ASSERT_TRUE(tempDir.isValid());
+    DownloadSettings settings(tempDir.path() + "/", nullptr);
+    QSignalSpy spy(&settings, &DownloadSettings::downloadSpoilerStatusChanged);
+
+    settings.setDownloadSpoilerStatus(true);
+
+    ASSERT_EQ(spy.count(), 1);
+}
+} // namespace
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/movecard_tests/CMakeLists.txt

@@ -9,3 +9,15 @@ cockatrice_add_test(
   LABELS
   server
 )
+
+cockatrice_add_test(
+  NAME
+  player_order_test
+  SOURCES
+  player_order_test.cpp
+  LIBS
+  libcockatrice_network_server_remote
+  libcockatrice_rng
+  LABELS
+  server
+)

tests/movecard_tests/player_order_test.cpp

@@ -0,0 +1,268 @@
+#include "game/game_config.h"
+#include "game/role_info.h"
+#include "game/server_abstract_participant.h"
+#include "game/server_game.h"
+#include "server_abstractuserinterface.h"
+#include "server_response_containers.h"
+#include "server_room.h"
+#include "server_test_helpers.h"
+
+#include <gtest/gtest.h>
+#include <libcockatrice/protocol/pb/game_event_container.pb.h>
+#include <libcockatrice/protocol/pb/response.pb.h>
+#include <libcockatrice/protocol/pb/room_event.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_user.pb.h>
+#include <libcockatrice/protocol/pb/session_event.pb.h>
+#include <libcockatrice/rng/rng_abstract.h>
+
+RNG_Abstract *rng = nullptr; // this needs to be defined due to other functions in server
+
+class ScriptedRng : public RNG_Abstract
+{
+public:
+    QList<unsigned int> values;
+
+    unsigned int rand(int min, int max) override
+    {
+        const unsigned int value = values.takeFirst();
+        EXPECT_GE(value, static_cast<unsigned int>(min));
+        EXPECT_LE(value, static_cast<unsigned int>(max));
+        return value;
+    }
+};
+
+class FakeUserInterface : public Server_AbstractUserInterface
+{
+public:
+    FakeUserInterface(Server *_server, const ServerInfo_User &_userInfo) : Server_AbstractUserInterface(_server)
+    {
+        setUserInfo(_userInfo);
+    }
+
+    int getLastCommandTime() const override
+    {
+        return 0;
+    }
+
+    bool addSaidMessageSize(int) override
+    {
+        return true;
+    }
+
+    void sendProtocolItem(const Response &) override
+    {
+    }
+
+    void sendProtocolItem(const SessionEvent &) override
+    {
+    }
+
+    void sendProtocolItem(const GameEventContainer &) override
+    {
+    }
+
+    void sendProtocolItem(const RoomEvent &) override
+    {
+    }
+};
+
+namespace
+{
+QStringList participantNamesInOrder(const Server_Game &game)
+{
+    QStringList names;
+    for (int id : game.getSeatOrder()) {
+        const auto *participant = game.getParticipants().value(id, nullptr);
+        if (participant) {
+            names.append(QString::fromStdString(participant->getUserInfo()->name()));
+        }
+    }
+    return names;
+}
+
+QList<int> participantIdsInOrder(const Server_Game &game)
+{
+    return game.getSeatOrder();
+}
+} // namespace
+
+class PlayerOrderTest : public ::testing::Test
+{
+protected:
+    ServerInfo_User creator;
+    ServerInfo_User userB;
+    ServerInfo_User userC;
+
+    PlayerOrderTest()
+    {
+        creator.set_name("A");
+        creator.set_user_level(ServerInfo_User::IsRegistered);
+        userB.set_name("B");
+        userB.set_user_level(ServerInfo_User::IsRegistered);
+        userC.set_name("C");
+        userC.set_user_level(ServerInfo_User::IsRegistered);
+    }
+};
+
+TEST_F(PlayerOrderTest, JoinOrderIsSeatOrder)
+{
+    FakeServer server;
+    Server_Room room(0, 0, "", "", "", "", false, "", {}, &server);
+    FakeUserInterface uiA(&server, creator);
+    FakeUserInterface uiB(&server, userB);
+    FakeUserInterface uiC(&server, userC);
+    GameConfig config{.creatorInfo = creator,
+                      .gameId = 1,
+                      .description = QString(),
+                      .password = QString(),
+                      .maxPlayers = 3,
+                      .gameTypes = QList<int>(),
+                      .onlyBuddies = false,
+                      .onlyRegistered = false,
+                      .spectatorsAllowed = false,
+                      .spectatorsNeedPassword = false,
+                      .spectatorsCanTalk = false,
+                      .spectatorsSeeEverything = false,
+                      .startingLifeTotal = 20,
+                      .shareDecklistsOnLoad = false,
+                      .shufflePlayers = false};
+    Server_Game game(config, &room);
+    ResponseContainer rc(0);
+
+    game.addPlayer(&uiA, rc, RoleInfo{}, false);
+    game.addPlayer(&uiB, rc, RoleInfo{}, false);
+    game.addPlayer(&uiC, rc, RoleInfo{}, false);
+
+    EXPECT_EQ(participantNamesInOrder(game), QStringList({"A", "B", "C"}));
+    EXPECT_EQ(participantIdsInOrder(game), QList<int>({0, 1, 2}));
+    EXPECT_EQ(game.getHostId(), 0);
+    EXPECT_EQ(game.getPlayerCount(), 3);
+}
+
+TEST_F(PlayerOrderTest, ReorderPlayerSeats)
+{
+    FakeServer server;
+    Server_Room room(0, 0, "", "", "", "", false, "", {}, &server);
+    FakeUserInterface uiA(&server, creator);
+    FakeUserInterface uiB(&server, userB);
+    FakeUserInterface uiC(&server, userC);
+    GameConfig config{.creatorInfo = creator,
+                      .gameId = 1,
+                      .description = QString(),
+                      .password = QString(),
+                      .maxPlayers = 3,
+                      .gameTypes = QList<int>(),
+                      .onlyBuddies = false,
+                      .onlyRegistered = false,
+                      .spectatorsAllowed = false,
+                      .spectatorsNeedPassword = false,
+                      .spectatorsCanTalk = false,
+                      .spectatorsSeeEverything = false,
+                      .startingLifeTotal = 20,
+                      .shareDecklistsOnLoad = false,
+                      .shufflePlayers = false};
+    Server_Game game(config, &room);
+    ResponseContainer rc(0);
+
+    game.addPlayer(&uiA, rc, RoleInfo{}, false);
+    game.addPlayer(&uiB, rc, RoleInfo{}, false);
+    game.addPlayer(&uiC, rc, RoleInfo{}, false);
+
+    game.reorderPlayerSeats({"C", "A", "B"});
+
+    // player ids are stable; only the seat order changes
+    EXPECT_EQ(participantNamesInOrder(game), QStringList({"C", "A", "B"}));
+    EXPECT_EQ(participantIdsInOrder(game), QList<int>({2, 0, 1}));
+    EXPECT_EQ(game.getParticipants().size(), 3);
+
+    // the host keeps its seat: creator A is still in the game, so host stays 0
+    EXPECT_EQ(game.getHostId(), 0);
+
+    // no re-keying means every mapping keyed by player id stays valid
+    const int gameId = game.getGameId();
+    EXPECT_EQ(uiA.getGames().value(gameId).second, 0);
+    EXPECT_EQ(uiB.getGames().value(gameId).second, 1);
+    EXPECT_EQ(uiC.getGames().value(gameId).second, 2);
+}
+
+TEST_F(PlayerOrderTest, ReorderPlayerSeatsKeepsPlayerCount)
+{
+    FakeServer server;
+    Server_Room room(0, 0, "", "", "", "", false, "", {}, &server);
+    FakeUserInterface uiA(&server, creator);
+    FakeUserInterface uiB(&server, userB);
+    FakeUserInterface uiC(&server, userC);
+    GameConfig config{.creatorInfo = creator,
+                      .gameId = 1,
+                      .description = QString(),
+                      .password = QString(),
+                      .maxPlayers = 3,
+                      .gameTypes = QList<int>(),
+                      .onlyBuddies = false,
+                      .onlyRegistered = false,
+                      .spectatorsAllowed = false,
+                      .spectatorsNeedPassword = false,
+                      .spectatorsCanTalk = false,
+                      .spectatorsSeeEverything = false,
+                      .startingLifeTotal = 20,
+                      .shareDecklistsOnLoad = false,
+                      .shufflePlayers = false};
+    Server_Game game(config, &room);
+    ResponseContainer rc(0);
+
+    game.addPlayer(&uiA, rc, RoleInfo{}, false);
+    game.addPlayer(&uiB, rc, RoleInfo{}, false);
+    game.addPlayer(&uiC, rc, RoleInfo{}, false);
+
+    // listing only a subset appends the remaining players in their current order
+    game.reorderPlayerSeats({"C"});
+
+    EXPECT_EQ(participantNamesInOrder(game), QStringList({"C", "A", "B"}));
+    EXPECT_EQ(participantIdsInOrder(game), QList<int>({2, 0, 1}));
+    EXPECT_EQ(game.getPlayerCount(), 3);
+    EXPECT_EQ(game.getHostId(), 0);
+}
+
+TEST_F(PlayerOrderTest, ShufflePlayerSeatsIsAPermutation)
+{
+    FakeServer server;
+    Server_Room room(0, 0, "", "", "", "", false, "", {}, &server);
+    FakeUserInterface uiA(&server, creator);
+    FakeUserInterface uiB(&server, userB);
+    FakeUserInterface uiC(&server, userC);
+    GameConfig config{.creatorInfo = creator,
+                      .gameId = 1,
+                      .description = QString(),
+                      .password = QString(),
+                      .maxPlayers = 3,
+                      .gameTypes = QList<int>(),
+                      .onlyBuddies = false,
+                      .onlyRegistered = false,
+                      .spectatorsAllowed = false,
+                      .spectatorsNeedPassword = false,
+                      .spectatorsCanTalk = false,
+                      .spectatorsSeeEverything = false,
+                      .startingLifeTotal = 20,
+                      .shareDecklistsOnLoad = false,
+                      .shufflePlayers = false};
+    Server_Game game(config, &room);
+    ResponseContainer rc(0);
+
+    game.addPlayer(&uiA, rc, RoleInfo{}, false);
+    game.addPlayer(&uiB, rc, RoleInfo{}, false);
+    game.addPlayer(&uiC, rc, RoleInfo{}, false);
+
+    // fisher-yates on [A, B, C]: rand(0, 2) -> 1 (take B), rand(0, 1) -> 0 (take A), rand(0, 0) -> 0 (take C)
+    auto *scriptedRng = new ScriptedRng;
+    scriptedRng->values = {1, 0, 0};
+    rng = scriptedRng;
+
+    game.shufflePlayerSeats();
+
+    EXPECT_EQ(participantNamesInOrder(game), QStringList({"B", "A", "C"}));
+    EXPECT_EQ(participantIdsInOrder(game), QList<int>({1, 0, 2}));
+    QSet<int> idSet(participantIdsInOrder(game).cbegin(), participantIdsInOrder(game).cend());
+    EXPECT_EQ(idSet.size(), 3); // ids are unique
+    // ids are stable, so the host (creator A, id 0) is unchanged
+    EXPECT_EQ(game.getHostId(), 0);
+}

tests/moxfield_signature_spells_test.cpp

@@ -0,0 +1,84 @@
+#include "client/network/parsers/interface_json_deck_parser.h"
+
+#include <QJsonDocument>
+#include <gtest/gtest.h>
+#include <libcockatrice/deck_list/tree/deck_list_card_node.h>
+#include <libcockatrice/deck_list/tree/inner_deck_list_node.h>
+
+TEST(MoxfieldImport, SignatureSpellIsAddedToMainWithoutReplacingCommanderBanner)
+{
+    // Moxfield v2 board objects map IDs to entries with quantity and card.
+    const auto input = QJsonDocument::fromJson(R"json({
+        "name": "Oathbreaker example", "description": "Notes retained",
+        "mainboard": {"land": {"quantity": 1, "card": {"name": "Island", "set": "abc", "cn": "1"}}},
+        "sideboard": {"side": {"quantity": 1, "card": {"name": "Mountain", "set": "abc", "cn": "2"}}},
+        "commanders": {"walker": {"quantity": 1, "card": {"name": "Jace", "set": "abc", "cn": "3", "scryfall_id": "walker-id"}}},
+        "signatureSpells": {"spell": {"quantity": 1, "card": {"name": "Lightning Bolt", "set": "xyz", "cn": "4", "scryfall_id": "spell-id"}}}
+    })json")
+                           .object();
+    MoxfieldJsonParser parser;
+    DeckList deck = parser.parse(input);
+    int mainSpellCount = 0;
+    int sideSpellCount = 0;
+    int mainLands = 0;
+    int sideLands = 0;
+    deck.forEachCard([&](InnerDecklistNode *zone, DecklistCardNode *card) {
+        if (card->getName() == "Island" && zone->getName() == DECK_ZONE_MAIN) {
+            mainLands += card->getNumber();
+        }
+        if (card->getName() == "Mountain" && zone->getName() == DECK_ZONE_SIDE) {
+            sideLands += card->getNumber();
+        }
+        if (card->getName() != "Lightning Bolt") {
+            return;
+        }
+        if (zone->getName() == DECK_ZONE_MAIN) {
+            mainSpellCount += card->getNumber();
+            EXPECT_EQ(card->getCardSetShortName(), "XYZ");
+            EXPECT_EQ(card->getCardCollectorNumber(), "4");
+            EXPECT_EQ(card->getCardProviderId(), "spell-id");
+        } else if (zone->getName() == DECK_ZONE_SIDE) {
+            sideSpellCount += card->getNumber();
+        }
+    });
+    EXPECT_EQ(mainSpellCount, 1);
+    EXPECT_EQ(sideSpellCount, 0);
+    EXPECT_EQ(mainLands, 1);
+    EXPECT_EQ(sideLands, 1);
+    EXPECT_EQ(deck.getName(), "Oathbreaker example");
+    EXPECT_EQ(deck.getComments(), "Notes retained");
+    EXPECT_EQ(deck.getBannerCard().name, "Jace");
+    EXPECT_EQ(deck.getBannerCard().providerId, "walker-id");
+}
+
+TEST(MoxfieldImport, QuantityAwareDeckInsertionRetainsCountAndPrinting)
+{
+    DeckList deck;
+    auto *card = deck.addCards("Island", 2, DECK_ZONE_MAIN, -1, "ABC", "4", "id");
+    ASSERT_NE(card, nullptr);
+    EXPECT_EQ(card->getNumber(), 2);
+    EXPECT_EQ(card->getCardProviderId(), "id");
+    EXPECT_EQ(deck.addCards("Island", 0, DECK_ZONE_MAIN), nullptr);
+}
+
+TEST(OnlineImport, ArchidektPreservesNameDescriptionAndCards)
+{
+    const auto input = QJsonDocument::fromJson(R"json({
+        "name": "Online deck", "description": "Deck notes",
+        "cards": [{"quantity": 2, "card": {
+            "oracleCard": {"name": "Island"}, "edition": {"editioncode": "abc"}, "collectorNumber": "1"
+        }}]
+    })json")
+                           .object();
+    ArchidektJsonParser parser;
+    const DeckList deck = parser.parse(input);
+    int count = 0;
+    deck.forEachCard([&](InnerDecklistNode *zone, DecklistCardNode *card) {
+        if (zone->getName() == DECK_ZONE_MAIN && card->getName() == "Island") {
+            count += card->getNumber();
+        }
+    });
+    EXPECT_EQ(count, 2);
+    EXPECT_EQ(deck.getName(), "Online deck");
+    EXPECT_EQ(deck.getComments(), "Deck notes");
+}

tests/oracle/CMakeLists.txt

@@ -9,6 +9,7 @@ cockatrice_add_test(
   ../../oracle/src/oracleimporter.cpp
   ../../oracle/src/parsehelpers.cpp
   ../../oracle/src/raw_json_scanner.cpp
+  ../../oracle/src/database_writer.cpp
   oracle_importer_test.cpp
   LIBS
   libcockatrice_card

tests/oracle/oracle_importer_test.cpp

@@ -1,3 +1,4 @@
+#include "../../oracle/src/database_writer.h"
 #include "../../oracle/src/oracleimporter.h"
 #include "../../oracle/src/raw_json_scanner.h"
 #include "libcockatrice/card/card_info.h"
@@ -6,6 +7,7 @@
 #include <QByteArray>
 #include <QChar>
 #include <QDate>
+#include <QFile>
 #include <QJsonArray>
 #include <QJsonDocument>
 #include <QJsonObject>
@@ -20,6 +22,7 @@
 #include <QRegularExpressionMatch>
 #include <QSharedPointer>
 #include <QString>
+#include <QTemporaryDir>
 #include <QUuid>
 #include <QVariant>
 #include <QVariantMap>
@@ -30,6 +33,12 @@
 #include <string>
 #include <utility>
 
+#ifdef Q_OS_UNIX
+#include <csignal>
+#include <sys/resource.h>
+#include <unistd.h>
+#endif
+
 class OracleImporterTest : public ::testing::Test
 {
 protected:
@@ -1140,6 +1149,212 @@ TEST_F(OracleImporterTest, StartImportAppliesLocalizedData)
     ASSERT_EQ(result->getLocalizedText("pt"), "Raio causa 3 de dano a qualquer alvo.");
 }
 
+namespace
+{
+QByteArray refreshSource(const QString &name = "New Card")
+{
+    QJsonObject card{{"name", name},       {"text", "Rules text."}, {"layout", "normal"},
+                     {"type", "Artifact"}, {"number", "1"},         {"rarity", "common"}};
+    QJsonObject set{{"code", "TST"}, {"name", "Test Set"}, {"type", "expansion"}, {"cards", QJsonArray{card}}};
+    return QJsonDocument(QJsonObject{{"data", QJsonObject{{"TST", set}}}}).toJson(QJsonDocument::Compact);
+}
+} // namespace
+
+TEST_F(OracleImporterTest, FailedLazyParseKeepsInstalledDatabase)
+{
+    QTemporaryDir dir;
+    ASSERT_TRUE(dir.isValid());
+    const QString path = dir.filePath("cards.xml");
+    QFile original(path);
+    ASSERT_TRUE(original.open(QIODevice::WriteOnly));
+    ASSERT_EQ(original.write("existing database"), 17);
+    original.close();
+
+    // The metadata scanner skips numeric values without converting them. Qt's
+    // per-set parser rejects an overflowing number after selection succeeds.
+    auto badSet = QJsonDocument::fromJson(refreshSource()).object().value("data").toObject().value("TST").toObject();
+    auto goodSet = badSet;
+    goodSet["code"] = "AAA";
+    goodSet["name"] = "A successful first set";
+    auto badCard = badSet.value("cards").toArray().first().toObject();
+    badCard["number"] = "overflow";
+    badSet["cards"] = QJsonArray{badCard};
+    QByteArray data = QJsonDocument(QJsonObject{{"data", QJsonObject{{"AAA", goodSet}, {"TST", badSet}}}})
+                          .toJson(QJsonDocument::Compact);
+    data.replace("\"number\":\"overflow\"", "\"number\":1e9999");
+    ASSERT_TRUE(importer->readSetsFromByteArray(data));
+    EXPECT_EQ(importer->startImport(), 0);
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    EXPECT_TRUE(importer->getImportError().contains("TST"));
+    EXPECT_TRUE(importer->getCardList().isEmpty());
+    EXPECT_FALSE(importer->saveToFile(path, {}, {}));
+    ASSERT_TRUE(original.open(QIODevice::ReadOnly));
+    EXPECT_EQ(original.readAll(), "existing database");
+}
+
+TEST_F(OracleImporterTest, EmptyImportCannotReplaceInstalledCards)
+{
+    const QByteArray source = R"({"data":{"TST":{"code":"TST","name":"Test","type":"expansion","cards":[]}}})";
+    ASSERT_TRUE(importer->readSetsFromByteArray(source));
+    EXPECT_EQ(importer->startImport(), 0);
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    EXPECT_FALSE(importer->getImportError().isEmpty());
+}
+
+TEST_F(OracleImporterTest, MissingSourceBytesCannotProduceSuccessfulImport)
+{
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource()));
+    const auto selected = importer->getSets();
+    importer->releaseSetData();
+    importer->getSets() = selected;
+    EXPECT_EQ(importer->startImport(), 0);
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    EXPECT_TRUE(importer->getImportError().contains("TST"));
+}
+
+TEST_F(OracleImporterTest, CancellationDuringFinalSetCannotSavePartialDatabase)
+{
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource()));
+    QObject::connect(
+        importer, &OracleImporter::setIndexChanged, importer,
+        [this](int, int, const QString &name) {
+            if (!name.isEmpty()) {
+                importer->cancelImport();
+            }
+        },
+        Qt::DirectConnection);
+    EXPECT_EQ(importer->startImport(), 0);
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    EXPECT_TRUE(importer->getCardList().isEmpty());
+}
+
+TEST_F(OracleImporterTest, CancellationBeforeWorkerStartsIsNotLost)
+{
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource()));
+    importer->prepareImport();
+    importer->cancelImport();
+    EXPECT_EQ(importer->startImport(), 0);
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    importer->prepareImport();
+    EXPECT_EQ(importer->startImport(), 1);
+    EXPECT_TRUE(importer->hasSuccessfulImport());
+}
+
+TEST_F(OracleImporterTest, NewImportReplacesPreviousInMemoryCards)
+{
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource("Old Card")));
+    ASSERT_EQ(importer->startImport(), 1);
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource("New Card")));
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    ASSERT_EQ(importer->startImport(), 1);
+    EXPECT_EQ(importer->getCardList().size(), 1);
+    EXPECT_FALSE(importer->getCardList().contains("Old Card"));
+    EXPECT_TRUE(importer->getCardList().contains("New Card"));
+}
+
+TEST_F(OracleImporterTest, FailedSourceLoadCannotReusePreviousSuccessfulImport)
+{
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource()));
+    ASSERT_EQ(importer->startImport(), 1);
+    ASSERT_FALSE(importer->readSetsFromByteArray("invalid JSON"));
+    EXPECT_FALSE(importer->hasSuccessfulImport());
+    EXPECT_EQ(importer->startImport(), 0);
+}
+
+TEST_F(OracleImporterTest, SuccessfulRefreshCommitsCompleteXml)
+{
+    QTemporaryDir dir;
+    ASSERT_TRUE(dir.isValid());
+    const QString path = dir.filePath("cards.xml");
+    ASSERT_TRUE(importer->readSetsFromByteArray(refreshSource()));
+    ASSERT_EQ(importer->startImport(), 1);
+    importer->releaseSetData();
+    ASSERT_TRUE(importer->saveToFile(path, "test-source", "v1"));
+    QFile file(path);
+    ASSERT_TRUE(file.open(QIODevice::ReadOnly));
+    const QByteArray xml = file.readAll();
+    EXPECT_TRUE(xml.contains("New Card"));
+    EXPECT_TRUE(xml.contains("test-source"));
+    EXPECT_TRUE(xml.contains("</cockatrice_carddatabase>"));
+}
+
+TEST(OracleDatabaseWriter, AcceptsCompleteSupportedVersions)
+{
+    EXPECT_TRUE(OracleDatabase::validateXml(
+                    "<?xml version=\"1.0\"?><cockatrice_carddatabase version=\"3\"><cards/></cockatrice_carddatabase>")
+                    .isEmpty());
+    EXPECT_TRUE(OracleDatabase::validateXml("<cockatrice_carddatabase version=\"4\"><cards/></cockatrice_carddatabase>")
+                    .isEmpty());
+    EXPECT_FALSE(
+        OracleDatabase::validateXml("<cockatrice_carddatabase version=\"5\"><cards/></cockatrice_carddatabase>")
+            .isEmpty());
+}
+
+TEST(OracleDatabaseWriter, InvalidDownloadPreservesInstalledBytes)
+{
+    QTemporaryDir dir;
+    ASSERT_TRUE(dir.isValid());
+    const QString path = dir.filePath("tokens.xml");
+    QFile original(path);
+    ASSERT_TRUE(original.open(QIODevice::WriteOnly));
+    ASSERT_EQ(original.write("installed tokens"), 16);
+    original.close();
+    for (const QByteArray &payload : {QByteArray("<html>server error</html>"),
+                                      QByteArray("<cockatrice_carddatabase version=\"4\"><cards>"), QByteArray()}) {
+        QString error;
+        EXPECT_FALSE(OracleDatabase::saveXml(path, payload, &error));
+        EXPECT_FALSE(error.isEmpty());
+        ASSERT_TRUE(original.open(QIODevice::ReadOnly));
+        EXPECT_EQ(original.readAll(), "installed tokens");
+        original.close();
+    }
+}
+
+TEST(OracleDatabaseWriter, CompleteDownloadReplacesInstalledBytes)
+{
+    QTemporaryDir dir;
+    ASSERT_TRUE(dir.isValid());
+    const QString path = dir.filePath("cards.xml");
+    const QByteArray data("<cockatrice_carddatabase version=\"4\"><cards/></cockatrice_carddatabase>");
+    QString error = "previous failure";
+    ASSERT_TRUE(OracleDatabase::saveXml(path, data, &error));
+    EXPECT_TRUE(error.isEmpty());
+    QFile file(path);
+    ASSERT_TRUE(file.open(QIODevice::ReadOnly));
+    EXPECT_EQ(file.readAll(), data);
+}
+
+#ifdef Q_OS_UNIX
+TEST(OracleDatabaseWriter, ShortWriteKeepsPreviouslyInstalledDatabase)
+{
+    QTemporaryDir dir;
+    ASSERT_TRUE(dir.isValid());
+    const QString path = dir.filePath("cards.xml");
+    QFile original(path);
+    ASSERT_TRUE(original.open(QIODevice::WriteOnly));
+    ASSERT_EQ(original.write("installed database"), 18);
+    original.close();
+    const QByteArray data = "<cockatrice_carddatabase version=\"4\"><!--" + QByteArray(16384, 'x') +
+                            "--><cards/></cockatrice_carddatabase>";
+    // A real filesystem write failure, isolated in the death-test child so the
+    // process-wide file limit never affects other cases or the parent runner.
+    ASSERT_EXIT(
+        {
+            std::signal(SIGXFSZ, SIG_IGN);
+            struct rlimit limit;
+            limit.rlim_cur = 128;
+            limit.rlim_max = 128;
+            if (setrlimit(RLIMIT_FSIZE, &limit) != 0) {
+                _exit(2);
+            }
+            _exit(OracleDatabase::saveXml(path, data) ? 1 : 0);
+        },
+        ::testing::ExitedWithCode(0), "");
+    ASSERT_TRUE(original.open(QIODevice::ReadOnly));
+    EXPECT_EQ(original.readAll(), "installed database");
+}
+#endif
+
 int main(int argc, char **argv)
 {
     ::testing::InitGoogleTest(&argc, argv);

tests/password_hash_test.cpp

@@ -52,6 +52,17 @@ TEST(PasswordHashTest, DeriveKeyMatchesKnownVector)
     ASSERT_EQ(derived.toHex(), expected.toHex());
 }
 
+TEST(PasswordHashTest, DeriveKeyCoversTheWholeAcceptedRangeOfR)
+{
+    // costParamsAreSane accepts r up to 32. The memory budget handed to OpenSSL has to cover
+    // scrypt's XY array (256 * r bytes) on top of V and B, or derivation fails for r >= 17.
+    for (const int r : {17, 32}) {
+        const QByteArray derived = PasswordHasher::deriveKey("password", QByteArray("NaCl"), 1024, r, 1);
+        ASSERT_FALSE(derived.isEmpty()) << "deriveKey failed for accepted r=" << r;
+        ASSERT_EQ(derived.size(), SCRYPT_VERIFIER_LENGTH);
+    }
+}
+
 TEST(PasswordHashTest, PasswordVerifierRoundTrip)
 {
     const QString stored = PasswordHasher::generatePasswordVerifier("hunter2");

tests/server_forced_password_change_test.cpp

@@ -0,0 +1,234 @@
+/** @file server_forced_password_change_test.cpp
+ *  @brief Tests for the restricted session a forced password change leaves behind at login.
+ *  @ingroup Tests
+ */
+
+#include "libcockatrice/protocol/pb/response.pb.h"
+#include "libcockatrice/protocol/pb/server_message.pb.h"
+#include "server.h"
+#include "server_database_interface.h"
+#include "server_protocolhandler.h"
+
+#include <QString>
+#include <gtest/gtest.h>
+#include <libcockatrice/protocol/pb/commands.pb.h>
+#include <libcockatrice/protocol/pb/room_commands.pb.h>
+#include <libcockatrice/protocol/pb/serverinfo_user.pb.h>
+#include <libcockatrice/protocol/pb/session_commands.pb.h>
+#include <libcockatrice/rng/rng_abstract.h>
+
+RNG_Abstract *rng = nullptr; // referenced by the server_remote library
+
+namespace
+{
+
+class MockDatabaseInterface : public Server_DatabaseInterface
+{
+public:
+    AuthenticationResult checkUserPassword(Server_ProtocolHandler *,
+                                           const QString &,
+                                           const QString &,
+                                           const QString &,
+                                           QString &,
+                                           int &,
+                                           bool) override
+    {
+        return PasswordChangeRequired;
+    }
+    ServerInfo_User getUserData(const QString &name, bool withId) override
+    {
+        ServerInfo_User user;
+        user.set_name(name.toStdString());
+        user.set_user_level(ServerInfo_User::IsUser | ServerInfo_User::IsRegistered | ServerInfo_User::IsModerator);
+        if (withId) {
+            user.set_id(1);
+        }
+        return user;
+    }
+    int getNextReplayId() override
+    {
+        return 1;
+    }
+    int getNextGameId() override
+    {
+        return 1;
+    }
+    int getActiveUserCount(QString) override
+    {
+        return 0;
+    }
+};
+
+class FakeServer : public Server
+{
+public:
+    FakeServer()
+    {
+        setDatabaseInterface(new MockDatabaseInterface());
+    }
+};
+
+class TestHandler : public Server_ProtocolHandler
+{
+public:
+    TestHandler(Server *_server, Server_DatabaseInterface *_db) : Server_ProtocolHandler(_server, _db)
+    {
+    }
+
+    QString getAddress() const override
+    {
+        return {};
+    }
+    QString getConnectionType() const override
+    {
+        return {};
+    }
+
+    Response::ResponseCode lastResponseCode = Response::RespNothing;
+    int lastExtendedSessionCommand = -1;
+
+protected:
+    Response::ResponseCode
+    processExtendedSessionCommand(int cmdType, const SessionCommand & /*cmd*/, ResponseContainer & /*rc*/) override
+    {
+        lastExtendedSessionCommand = cmdType;
+        return Response::RespOk;
+    }
+
+    void transmitProtocolItem(const ServerMessage &item) override
+    {
+        if (item.message_type() == ServerMessage::RESPONSE) {
+            lastResponseCode = item.response().response_code();
+        }
+    }
+};
+
+class ForcedPasswordChangeTest : public ::testing::Test
+{
+protected:
+    FakeServer server;
+    TestHandler handler{&server, server.getDatabaseInterface()};
+
+    void login()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(1);
+        Command_Login cmd;
+        cmd.set_user_name("mod");
+        cont.add_session_command()->MutableExtension(Command_Login::ext)->CopyFrom(cmd);
+        handler.processCommandContainer(cont);
+    }
+
+    Response::ResponseCode sendPing()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(2);
+        cont.add_session_command()->MutableExtension(Command_Ping::ext);
+        handler.processCommandContainer(cont);
+        return handler.lastResponseCode;
+    }
+
+    Response::ResponseCode sendSessionCommand()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(3);
+        cont.add_session_command()->MutableExtension(Command_ListRooms::ext);
+        handler.processCommandContainer(cont);
+        return handler.lastResponseCode;
+    }
+
+    Response::ResponseCode sendRoomCommand()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(4);
+        cont.add_room_command()->MutableExtension(Command_RoomSay::ext)->set_message("hello");
+        handler.processCommandContainer(cont);
+        return handler.lastResponseCode;
+    }
+
+    Response::ResponseCode sendMixedSessionAndRoomCommand()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(5);
+        cont.add_session_command()->MutableExtension(Command_Ping::ext);
+        cont.add_room_command()->MutableExtension(Command_RoomSay::ext)->set_message("hello");
+        handler.processCommandContainer(cont);
+        return handler.lastResponseCode;
+    }
+
+    Response::ResponseCode sendAccountPassword()
+    {
+        CommandContainer cont;
+        cont.set_cmd_id(6);
+        Command_AccountPassword cmd;
+        cmd.set_old_password("temporary-password");
+        cmd.set_new_password("replacement-password");
+        cont.add_session_command()->MutableExtension(Command_AccountPassword::ext)->CopyFrom(cmd);
+        handler.processCommandContainer(cont);
+        return handler.lastResponseCode;
+    }
+};
+
+TEST_F(ForcedPasswordChangeTest, LoginReportsTheRequiredChange)
+{
+    login();
+
+    EXPECT_EQ(Response::RespPasswordChangeRequired, handler.lastResponseCode);
+    ASSERT_NE(nullptr, handler.getUserInfo());
+    EXPECT_EQ("mod", QString::fromStdString(handler.getUserInfo()->name()));
+}
+
+TEST_F(ForcedPasswordChangeTest, PendingSessionIsNotRegisteredAsAUser)
+{
+    login();
+    // The session may change its password, but it must not take a user slot or appear in
+    // the session table before the client reconnects with the new password.
+    EXPECT_FALSE(handler.getUserInfo()->has_session_id());
+    EXPECT_EQ(0, server.getUsersCount());
+}
+
+TEST_F(ForcedPasswordChangeTest, PendingModeratorIsNotReportedOnline)
+{
+    login();
+    server.addClient(&handler);
+
+    EXPECT_TRUE(server.getOnlineModeratorList().isEmpty());
+}
+
+TEST_F(ForcedPasswordChangeTest, OnlyPingAndPasswordChangeAreServed)
+{
+    login();
+
+    EXPECT_EQ(Response::RespOk, sendPing());
+    EXPECT_EQ(Response::RespFunctionNotAllowed, sendSessionCommand());
+    EXPECT_EQ(Response::RespFunctionNotAllowed, sendRoomCommand());
+    // Dispatch prefers game/room over session, so a container carrying both must not slip past
+    // the restriction by carrying a session command.
+    EXPECT_EQ(Response::RespFunctionNotAllowed, sendMixedSessionAndRoomCommand());
+}
+
+TEST_F(ForcedPasswordChangeTest, AccountPasswordReachesTheCommand)
+{
+    login();
+    // The forced change is useless if the gate refuses the command it needs. ACCOUNT_PASSWORD is
+    // served by the extended-command hook, so it must arrive there instead of being filtered.
+    EXPECT_EQ(Response::RespOk, sendAccountPassword());
+    EXPECT_EQ(SessionCommand::ACCOUNT_PASSWORD, handler.lastExtendedSessionCommand);
+}
+
+TEST_F(ForcedPasswordChangeTest, CompletedLoginIsStillReportedOnline)
+{
+    TestHandler loggedIn{&server, server.getDatabaseInterface()};
+    ServerInfo_User user;
+    user.set_name("online-mod");
+    user.set_user_level(ServerInfo_User::IsUser | ServerInfo_User::IsRegistered | ServerInfo_User::IsModerator);
+    user.set_session_id(7);
+    loggedIn.setUserInfo(user);
+    server.addClient(&loggedIn);
+
+    const QList<QString> moderators = server.getOnlineModeratorList();
+    ASSERT_EQ(1, moderators.size());
+    EXPECT_EQ("online-mod", moderators.first());
+}
+
+} // namespace

tests/server_game_join_test.cpp

@@ -4,6 +4,7 @@
  */
 
 #include "game/game_config.h"
+#include "game/role_info.h"
 #include "game/server_game.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 #include "server.h"
@@ -119,13 +120,13 @@ TEST_F(GameJoinOverrideTest, StaffBypassPasswordRestriction)
     game = makeGame(true, false, false, true);
 
     // A plain user cannot override the password even with the override flag set.
-    EXPECT_EQ(game->checkJoin(&plainUser, "wrong", false, true, false), Response::RespWrongPassword);
+    EXPECT_EQ(game->checkJoin(&plainUser, "wrong", {}, true), Response::RespWrongPassword);
     // Moderators and judges may enter any game regardless of the password.
-    EXPECT_EQ(game->checkJoin(&moderator, "wrong", false, true, false), Response::RespOk);
-    EXPECT_EQ(game->checkJoin(&judge, "wrong", false, true, false), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&moderator, "wrong", {}, true), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&judge, "wrong", {}, true), Response::RespOk);
     // Without the override flag judges are still subject to the password.
-    EXPECT_EQ(game->checkJoin(&judge, "wrong", false, false, true), Response::RespWrongPassword);
-    EXPECT_EQ(game->checkJoin(&judge, "secret", false, false, true), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&judge, "wrong", {.isJudge = true}, false), Response::RespWrongPassword);
+    EXPECT_EQ(game->checkJoin(&judge, "secret", {.isJudge = true}, false), Response::RespOk);
 }
 
 TEST_F(GameJoinOverrideTest, StaffBypassRegisteredOnlyRestriction)
@@ -133,9 +134,9 @@ TEST_F(GameJoinOverrideTest, StaffBypassRegisteredOnlyRestriction)
     game = makeGame(false, true, false, true);
 
     // Without the override flag the only-registered restriction still applies.
-    EXPECT_EQ(game->checkJoin(&unregisteredJudge, QString(), false, false, false), Response::RespUserLevelTooLow);
+    EXPECT_EQ(game->checkJoin(&unregisteredJudge, QString(), {}, false), Response::RespUserLevelTooLow);
     // An unregistered judge may enter when overriding restrictions.
-    EXPECT_EQ(game->checkJoin(&unregisteredJudge, QString(), false, true, false), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&unregisteredJudge, QString(), {}, true), Response::RespOk);
 }
 
 TEST_F(GameJoinOverrideTest, StaffBypassBuddiesOnlyRestriction)
@@ -143,10 +144,10 @@ TEST_F(GameJoinOverrideTest, StaffBypassBuddiesOnlyRestriction)
     game = makeGame(false, false, true, true);
 
     // A plain user who is not on the creator's buddy list gets rejected.
-    EXPECT_EQ(game->checkJoin(&plainUser, QString(), false, true, false), Response::RespOnlyBuddies);
+    EXPECT_EQ(game->checkJoin(&plainUser, QString(), {}, true), Response::RespOnlyBuddies);
     // Moderators and judges bypass the buddies-only restriction.
-    EXPECT_EQ(game->checkJoin(&moderator, QString(), false, true, false), Response::RespOk);
-    EXPECT_EQ(game->checkJoin(&judge, QString(), false, true, false), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&moderator, QString(), {}, true), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&judge, QString(), {}, true), Response::RespOk);
 }
 
 TEST_F(GameJoinOverrideTest, StaffBypassSpectatorsNotAllowedRestriction)
@@ -154,11 +155,11 @@ TEST_F(GameJoinOverrideTest, StaffBypassSpectatorsNotAllowedRestriction)
     game = makeGame(false, false, false, false);
 
     // A plain user cannot spectate when the game disallows spectators.
-    EXPECT_EQ(game->checkJoin(&plainUser, QString(), true, false, false), Response::RespSpectatorsNotAllowed);
+    EXPECT_EQ(game->checkJoin(&plainUser, QString(), {.isSpectator = true}, false), Response::RespSpectatorsNotAllowed);
     // Moderators and judges may spectate any game regardless of the password
     // and the spectator restriction.
-    EXPECT_EQ(game->checkJoin(&moderator, "wrong", true, true, false), Response::RespOk);
-    EXPECT_EQ(game->checkJoin(&judge, "wrong", true, true, false), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&moderator, "wrong", {.isSpectator = true}, true), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&judge, "wrong", {.isSpectator = true}, true), Response::RespOk);
 }
 
 TEST_F(GameJoinOverrideTest, JudgeOverrideDoesNotGrantJudgeJoinToPlainUser)
@@ -166,8 +167,8 @@ TEST_F(GameJoinOverrideTest, JudgeOverrideDoesNotGrantJudgeJoinToPlainUser)
     game = makeGame(false, false, false, true);
 
     // joining with join_as_judge still requires the judge flag even when overriding.
-    EXPECT_EQ(game->checkJoin(&plainUser, QString(), false, true, true), Response::RespUserLevelTooLow);
-    EXPECT_EQ(game->checkJoin(&judge, QString(), false, true, true), Response::RespOk);
+    EXPECT_EQ(game->checkJoin(&plainUser, QString(), {.isJudge = true}, true), Response::RespUserLevelTooLow);
+    EXPECT_EQ(game->checkJoin(&judge, QString(), {.isJudge = true}, true), Response::RespOk);
 }
 
 } // namespace

tests/settings/CMakeLists.txt

@@ -1,5 +1,7 @@
 cockatrice_add_test(NAME settings_manager_test SOURCES settings_manager_test.cpp LIBS libcockatrice_settings)
 
+cockatrice_add_test(NAME servers_settings_test SOURCES servers_settings_test.cpp LIBS libcockatrice_settings)
+
 cockatrice_add_test(
   NAME
   settings_defaults_test

tests/settings/servers_settings_test.cpp

@@ -0,0 +1,228 @@
+#include "gtest/gtest.h"
+#include <QSettings>
+#include <QString>
+#include <QTemporaryDir>
+#include <libcockatrice/settings/servers_settings.h>
+
+namespace
+{
+class ServersSettingsTest : public ::testing::Test
+{
+protected:
+    QTemporaryDir tempDir;
+    QString settingsPath;
+
+    void SetUp() override
+    {
+        settingsPath = tempDir.path() + "/";
+    }
+
+    QString settingsFile() const
+    {
+        return settingsPath + "servers.ini";
+    }
+
+    void writeLegacyServer(int index,
+                           const QString &saveName,
+                           const QString &host,
+                           const QString &port,
+                           const QString &username,
+                           const QString &password,
+                           bool savePassword,
+                           const QString &site)
+    {
+        QSettings settings(settingsFile(), QSettings::IniFormat);
+        const QString prefix = QStringLiteral("server/server_details/");
+        settings.setValue(prefix + QStringLiteral("saveName%1").arg(index), saveName);
+        settings.setValue(prefix + QStringLiteral("server%1").arg(index), host);
+        settings.setValue(prefix + QStringLiteral("port%1").arg(index), port);
+        settings.setValue(prefix + QStringLiteral("username%1").arg(index), username);
+        settings.setValue(prefix + QStringLiteral("password%1").arg(index), password);
+        settings.setValue(prefix + QStringLiteral("savePassword%1").arg(index), savePassword);
+        settings.setValue(prefix + QStringLiteral("site%1").arg(index), site);
+    }
+};
+
+TEST_F(ServersSettingsTest, AddServerStoresAllFields)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "secret", true, "https://alpha.example");
+
+    const auto servers = settings.getServers();
+    ASSERT_EQ(servers.size(), 1);
+    EXPECT_EQ(servers.first().saveName, QString("Alpha"));
+    EXPECT_EQ(servers.first().host, QString("alpha.example"));
+    EXPECT_EQ(servers.first().port, QString("4748"));
+    EXPECT_EQ(servers.first().username, QString("alice"));
+    EXPECT_EQ(servers.first().password, QString("secret"));
+    EXPECT_TRUE(servers.first().savePassword);
+    EXPECT_EQ(servers.first().site, QString("https://alpha.example"));
+}
+
+TEST_F(ServersSettingsTest, AddExistingHostAndPortUpdatesInsteadOfDuplicating)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "secret", true, "site-a");
+    settings.addNewServer("Renamed", "alpha.example", "4748", "bob", "new-secret", true, "site-b");
+
+    const auto servers = settings.getServers();
+    ASSERT_EQ(servers.size(), 1);
+    EXPECT_EQ(servers.first().saveName, QString("Renamed"));
+    EXPECT_EQ(servers.first().username, QString("bob"));
+    EXPECT_EQ(servers.first().password, QString("new-secret"));
+    EXPECT_EQ(servers.first().site, QString("site-b"));
+}
+
+TEST_F(ServersSettingsTest, RemoveServerRemovesOnlyMatchingHostAndKeepsOrder)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "a", true, "");
+    settings.addNewServer("Beta", "beta.example", "4748", "bob", "b", true, "");
+    settings.addNewServer("Gamma", "gamma.example", "4748", "carol", "c", true, "");
+
+    settings.removeServer("beta.example");
+
+    const auto servers = settings.getServers();
+    ASSERT_EQ(servers.size(), 2);
+    EXPECT_EQ(servers.at(0).saveName, QString("Alpha"));
+    EXPECT_EQ(servers.at(1).saveName, QString("Gamma"));
+}
+
+TEST_F(ServersSettingsTest, RemovingLastServerDropsItsStaleArraySlot)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "a", true, "");
+    settings.addNewServer("Beta", "beta.example", "4748", "bob", "b", true, "");
+    settings.addNewServer("Gamma", "gamma.example", "4748", "carol", "gamma-secret", true, "");
+
+    settings.removeServer("gamma.example");
+
+    QSettings raw(settingsFile(), QSettings::IniFormat);
+    EXPECT_FALSE(raw.contains("server/server_details/servers/3/password"));
+    EXPECT_FALSE(raw.contains("server/server_details/servers/3/saveName"));
+    ASSERT_EQ(settings.getServers().size(), 2);
+}
+
+TEST_F(ServersSettingsTest, UpdateWithoutLossKeepsCredentials)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "secret", true, "");
+
+    EXPECT_TRUE(settings.updateExistingServerWithoutLoss("Renamed", "alpha.example", "1234", "site"));
+
+    const auto server = settings.getServer(settings.findServerIndex("alpha.example", "1234"));
+    ASSERT_TRUE(server.has_value());
+    EXPECT_EQ(server->saveName, QString("Renamed"));
+    EXPECT_EQ(server->username, QString("alice"));
+    EXPECT_EQ(server->password, QString("secret"));
+    EXPECT_TRUE(server->savePassword);
+    EXPECT_EQ(server->site, QString("site"));
+}
+
+TEST_F(ServersSettingsTest, SetServerPasswordUpdatesOnlyTheNamedProfile)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    settings.addNewServer("Alpha", "alpha.example", "4748", "alice", "old", true, "");
+    settings.addNewServer("Beta", "beta.example", "4748", "bob", "keep", true, "");
+
+    settings.setServerPassword("Beta", "new");
+
+    EXPECT_EQ(settings.getServer(0)->password, QString("old"));
+    EXPECT_EQ(settings.getServer(1)->password, QString("new"));
+}
+
+TEST_F(ServersSettingsTest, LegacyProfilesAreMigrated)
+{
+    {
+        QSettings settings(settingsFile(), QSettings::IniFormat);
+        settings.setValue("server/server_details/totalServers", 2);
+    }
+    writeLegacyServer(1, "Alpha", "alpha.example", "4748", "alice", "secret", true, "site-a");
+    writeLegacyServer(2, "Beta", "beta.example", "4748", "bob", "other", false, "site-b");
+
+    ServersSettings settings(settingsPath, nullptr);
+
+    const auto servers = settings.getServers();
+    ASSERT_EQ(servers.size(), 2);
+    EXPECT_EQ(servers.at(0).saveName, QString("Alpha"));
+    EXPECT_EQ(servers.at(0).host, QString("alpha.example"));
+    EXPECT_TRUE(servers.at(0).savePassword);
+    EXPECT_EQ(servers.at(1).saveName, QString("Beta"));
+    EXPECT_FALSE(servers.at(1).savePassword);
+
+    QSettings raw(settingsFile(), QSettings::IniFormat);
+    EXPECT_FALSE(raw.contains("server/server_details/totalServers"));
+    EXPECT_FALSE(raw.contains("server/server_details/saveName1"));
+    EXPECT_FALSE(raw.contains("server/server_details/server1"));
+}
+
+TEST_F(ServersSettingsTest, MigrationRunsOnce)
+{
+    writeLegacyServer(1, "Alpha", "alpha.example", "4748", "alice", "secret", true, "");
+    {
+        QSettings settings(settingsFile(), QSettings::IniFormat);
+        settings.setValue("server/server_details/totalServers", 1);
+    }
+
+    {
+        ServersSettings first(settingsPath, nullptr);
+        ASSERT_EQ(first.getServers().size(), 1);
+    }
+
+    ServersSettings second(settingsPath, nullptr);
+    ASSERT_EQ(second.getServers().size(), 1);
+}
+
+TEST_F(ServersSettingsTest, LegacyProfileAddedAfterMigrationIsMerged)
+{
+    {
+        ServersSettings first(settingsPath, nullptr);
+        first.addNewServer("Alpha", "alpha.example", "4748", "alice", "secret", true, "");
+    }
+
+    // An older build writes its own profile back in the legacy format after the
+    // array migration already happened.
+    writeLegacyServer(1, "Beta", "beta.example", "4748", "bob", "other", true, "site-b");
+    // A duplicate of a profile the array already holds must not be added twice.
+    writeLegacyServer(2, "Alpha duplicate", "alpha.example", "4748", "eve", "dupe", true, "");
+    {
+        QSettings settings(settingsFile(), QSettings::IniFormat);
+        settings.setValue("server/server_details/totalServers", 2);
+    }
+
+    ServersSettings settings(settingsPath, nullptr);
+
+    const auto servers = settings.getServers();
+    ASSERT_EQ(servers.size(), 2);
+    EXPECT_EQ(servers.at(0).saveName, QString("Alpha"));
+    EXPECT_EQ(servers.at(0).password, QString("secret"));
+    EXPECT_EQ(servers.at(1).saveName, QString("Beta"));
+    EXPECT_EQ(servers.at(1).host, QString("beta.example"));
+    EXPECT_EQ(servers.at(1).username, QString("bob"));
+    EXPECT_EQ(servers.at(1).password, QString("other"));
+    EXPECT_TRUE(servers.at(1).savePassword);
+    EXPECT_EQ(servers.at(1).site, QString("site-b"));
+
+    QSettings raw(settingsFile(), QSettings::IniFormat);
+    EXPECT_FALSE(raw.contains("server/server_details/totalServers"));
+    EXPECT_FALSE(raw.contains("server/server_details/saveName1"));
+    EXPECT_FALSE(raw.contains("server/server_details/server2"));
+
+    // The merge is persisted, so a further start adds nothing.
+    ServersSettings again(settingsPath, nullptr);
+    ASSERT_EQ(again.getServers().size(), 2);
+}
+
+TEST_F(ServersSettingsTest, OutOfRangeIndexReturnsNullopt)
+{
+    ServersSettings settings(settingsPath, nullptr);
+    EXPECT_FALSE(settings.getServer(-1).has_value());
+    EXPECT_FALSE(settings.getServer(0).has_value());
+}
+} // namespace
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}

tests/spoiler_file_test.cpp

@@ -0,0 +1,149 @@
+#include "client/network/update/card_spoiler/spoiler_file.h"
+
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QTemporaryDir>
+#include <gtest/gtest.h>
+
+#ifdef Q_OS_UNIX
+#include <csignal>
+#include <sys/resource.h>
+#include <unistd.h>
+#endif
+
+namespace
+{
+class SpoilerFileTest : public ::testing::Test
+{
+protected:
+    QTemporaryDir directory;
+    QString path;
+    QString error;
+    const QByteArray original = "<cockatrice_carddatabase version=\"4\"><cards/></cockatrice_carddatabase>";
+
+    void SetUp() override
+    {
+        ASSERT_TRUE(directory.isValid());
+        path = directory.filePath("spoiler.xml");
+        QFile file(path);
+        ASSERT_TRUE(file.open(QIODevice::WriteOnly));
+        ASSERT_EQ(file.write(original), original.size());
+    }
+
+    QByteArray read()
+    {
+        QFile file(path);
+        EXPECT_TRUE(file.open(QIODevice::ReadOnly));
+        return file.readAll();
+    }
+
+    SpoilerFile::SaveResult save(const QByteArray &data)
+    {
+        return SpoilerFile::save(path, data, [] { return true; }, error);
+    }
+};
+
+TEST_F(SpoilerFileTest, InvalidDocumentsPreserveExistingFile)
+{
+    for (const QByteArray &invalid :
+         {QByteArray(), QByteArray("<html><cards/></html>"),
+          QByteArray("<cockatrice_carddatabase version=\"2\"><cards/></cockatrice_carddatabase>"),
+          QByteArray("<cockatrice_carddatabase><cards/></cockatrice_carddatabase>"),
+          QByteArray("<cockatrice_carddatabase version=\"4\"><sets/></cockatrice_carddatabase>"),
+          QByteArray("<cockatrice_carddatabase version=\"4\"><cards>"),
+          QByteArray("<cockatrice_carddatabase version=\"4\"><cards/></cockatrice_carddatabase><extra/>")}) {
+        EXPECT_EQ(save(invalid), SpoilerFile::SaveResult::Failed);
+        EXPECT_FALSE(error.isEmpty());
+        EXPECT_EQ(read(), original);
+    }
+}
+
+TEST_F(SpoilerFileTest, SupportedVersionsAreAccepted)
+{
+    EXPECT_TRUE(SpoilerFile::validate(original).isEmpty());
+    EXPECT_TRUE(
+        SpoilerFile::validate("<cockatrice_carddatabase version=\"3\"><cards/></cockatrice_carddatabase>").isEmpty());
+}
+
+TEST_F(SpoilerFileTest, IdenticalFileIsUnchanged)
+{
+    EXPECT_EQ(save(original), SpoilerFile::SaveResult::Unchanged);
+    EXPECT_TRUE(error.isEmpty());
+    EXPECT_EQ(read(), original);
+}
+
+TEST_F(SpoilerFileTest, CompleteFileHashDetectsChangesAfterLargeCommonPrefix)
+{
+    QByteArray changed = "<cockatrice_carddatabase version=\"4\"><!--";
+    changed += QByteArray(100000, 'x');
+    changed += "--><cards/></cockatrice_carddatabase>";
+    ASSERT_EQ(save(changed), SpoilerFile::SaveResult::Written);
+    changed.replace("<cards/>", "<cards></cards>");
+    EXPECT_EQ(save(changed), SpoilerFile::SaveResult::Written);
+    EXPECT_EQ(read(), changed);
+    EXPECT_TRUE(error.isEmpty());
+}
+
+TEST_F(SpoilerFileTest, CancellationBeforeWritePreservesExistingFile)
+{
+    EXPECT_EQ(SpoilerFile::save(path, original, [] { return false; }, error), SpoilerFile::SaveResult::Failed);
+    EXPECT_FALSE(error.isEmpty());
+    EXPECT_EQ(read(), original);
+}
+
+TEST_F(SpoilerFileTest, CancellationBeforeCommitPreservesExistingFile)
+{
+    int checks = 0;
+    EXPECT_EQ(SpoilerFile::save(
+                  path, original + "\n", [&checks] { return ++checks == 1; }, error),
+              SpoilerFile::SaveResult::Failed);
+    EXPECT_EQ(checks, 2);
+    EXPECT_FALSE(error.isEmpty());
+    EXPECT_EQ(read(), original);
+    EXPECT_EQ(QDir(directory.path()).entryList(QDir::Files), QStringList{"spoiler.xml"});
+}
+
+TEST_F(SpoilerFileTest, MissingParentIsCreated)
+{
+    path = directory.filePath("nested/spoiler.xml");
+    EXPECT_EQ(save(original), SpoilerFile::SaveResult::Written);
+    EXPECT_EQ(read(), original);
+}
+
+TEST_F(SpoilerFileTest, FileInParentPathReportsFailureWithoutModifyingIt)
+{
+    EXPECT_EQ(SpoilerFile::save(
+                  QDir(path).filePath("spoiler.xml"), original, [] { return true; }, error),
+              SpoilerFile::SaveResult::Failed);
+    EXPECT_FALSE(error.isEmpty());
+    EXPECT_EQ(read(), original);
+}
+
+#ifdef Q_OS_UNIX
+TEST_F(SpoilerFileTest, ShortWriteLeavesExistingFileIntact)
+{
+    // Limit only the child process: a real short write exercises QSaveFile's
+    // buffered flush failure without depending on disk capacity or file ownership.
+    const QByteArray changed = "<cockatrice_carddatabase version=\"4\"><!--" + QByteArray(100000, 'x') +
+                               "--><cards/></cockatrice_carddatabase>";
+    EXPECT_EXIT(
+        {
+            struct rlimit limit;
+            if (getrlimit(RLIMIT_FSIZE, &limit) != 0) {
+                _exit(2);
+            }
+            limit.rlim_cur = 128;
+            if (setrlimit(RLIMIT_FSIZE, &limit) != 0) {
+                _exit(3);
+            }
+            std::signal(SIGXFSZ, SIG_IGN);
+            const auto result = save(changed);
+            _exit(result == SpoilerFile::SaveResult::Failed && !error.isEmpty() ? 0 : 1);
+        },
+        ::testing::ExitedWithCode(0), "");
+    EXPECT_EQ(read(), original);
+    EXPECT_EQ(QDir(directory.path()).entryList(QDir::Files), QStringList{"spoiler.xml"});
+}
+#endif
+} // namespace

tests/support/model_contract_checker.h

@@ -0,0 +1,35 @@
+#ifndef COCKATRICE_TEST_MODEL_CONTRACT_CHECKER_H
+#define COCKATRICE_TEST_MODEL_CONTRACT_CHECKER_H
+
+#include <QAbstractItemModel>
+#include <QAbstractItemModelTester>
+#include <memory>
+
+namespace test_support
+{
+/**
+ * @brief Keeps a QAbstractItemModelTester alive for the lifetime of a scope.
+ *
+ * The tester only observes the model while it exists, so construct this before
+ * the mutations a test wants to validate and keep it in scope until the end.
+ * Fatal reporting mode aborts on the first contract violation; a warning would
+ * let the test pass while printing a line nobody reads in CI.
+ */
+class ModelContractChecker
+{
+public:
+    explicit ModelContractChecker(QAbstractItemModel *model)
+        : tester(
+              std::make_unique<QAbstractItemModelTester>(model, QAbstractItemModelTester::FailureReportingMode::Fatal))
+    {
+    }
+
+    ModelContractChecker(const ModelContractChecker &) = delete;
+    ModelContractChecker &operator=(const ModelContractChecker &) = delete;
+
+private:
+    std::unique_ptr<QAbstractItemModelTester> tester;
+};
+} // namespace test_support
+
+#endif // COCKATRICE_TEST_MODEL_CONTRACT_CHECKER_H

tests/svg_recolor_test.cpp

@@ -0,0 +1,66 @@
+#include "libcockatrice/utility/svg_recolor.h"
+
+#include <QByteArray>
+#include <gtest/gtest.h>
+
+namespace
+{
+
+TEST(SvgRecolor, ReplacesEverySentinel)
+{
+    const QByteArray svg = R"(<svg><path fill="currentColor"/><path stroke="currentColor"/></svg>)";
+    const QByteArray result = resolveSvgColorSentinel(svg, "#ff8800");
+
+    EXPECT_EQ(result.count("#ff8800"), 2);
+    EXPECT_FALSE(result.contains("currentColor"));
+}
+
+TEST(SvgRecolor, ReplacesSentinelRegardlessOfCase)
+{
+    const QByteArray svg = R"(<svg><path fill="CurrentColor"/><path stroke="CURRENTCOLOR"/></svg>)";
+
+    EXPECT_EQ(resolveSvgColorSentinel(svg, "#ff8800").count("#ff8800"), 2);
+}
+
+TEST(SvgRecolor, LeavesTheRestOfTheDocumentIntact)
+{
+    const QByteArray svg =
+        R"(<svg viewBox="0 0 24 24"><!-- an ordinary comment --><path d="M0 0h24v24" fill="currentColor"/></svg>)";
+    const QByteArray result = resolveSvgColorSentinel(svg, "#123456");
+
+    EXPECT_TRUE(result.contains(R"(viewBox="0 0 24 24")"));
+    EXPECT_TRUE(result.contains(R"(d="M0 0h24v24")"));
+    EXPECT_TRUE(result.contains("an ordinary comment"));
+}
+
+TEST(SvgRecolor, DoesNotModifyTheInput)
+{
+    const QByteArray svg = R"(<svg><path fill="currentColor"/></svg>)";
+    const QByteArray original = svg;
+
+    resolveSvgColorSentinel(svg, "#000000");
+
+    EXPECT_EQ(svg, original);
+}
+
+TEST(SvgRecolor, PreservesBytesThatAreNotValidUtf8)
+{
+    QByteArray svg = "<svg>";
+    svg.append("\xff\xfe");
+    svg.append(R"(<path fill="currentColor"/></svg>)");
+
+    const QByteArray result = resolveSvgColorSentinel(svg, "#ff8800");
+
+    EXPECT_TRUE(result.contains("\xff\xfe"));
+    EXPECT_FALSE(result.contains("currentColor"));
+    EXPECT_EQ(result.count("#ff8800"), 1);
+}
+
+TEST(SvgRecolor, NoSentinelIsANoOp)
+{
+    const QByteArray svg = R"(<svg><path fill="#abcdef"/></svg>)";
+
+    EXPECT_EQ(resolveSvgColorSentinel(svg, "#ffffff"), svg);
+}
+
+} // namespace

tests/theme_migration/CMakeLists.txt

@@ -5,12 +5,14 @@ cockatrice_add_test(
   ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/theme_manager.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/theme_config.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/pixel_map_generator.cpp
+  ${CMAKE_SOURCE_DIR}/cockatrice/src/interface/theme_icon.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/cache_settings.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/card_counter_settings.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/client/settings/shortcuts_settings.cpp
   ${CMAKE_SOURCE_DIR}/cockatrice/src/client/network/update/client/release_channel.cpp
   ${VERSION_STRING_CPP}
   theme_migration_test.cpp
+  theme_icon_render_test.cpp
   LIBS
   libcockatrice_settings
   libcockatrice_network
@@ -18,4 +20,6 @@ cockatrice_add_test(
   libcockatrice_protocol
   INCLUDE_DIRS
   ${CMAKE_SOURCE_DIR}/cockatrice/src
+  DEFINITIONS
+  COCKATRICE_SOURCE_DIR="${CMAKE_SOURCE_DIR}"
 )

tests/theme_migration/theme_icon_render_test.cpp

@@ -0,0 +1,189 @@
+#include "interface/theme_icon.h"
+#include "interface/theme_manager.h"
+
+#include <QApplication>
+#include <QColor>
+#include <QDir>
+#include <QFile>
+#include <QGuiApplication>
+#include <QImage>
+#include <QPalette>
+#include <QPixmap>
+#include <QSize>
+#include <QStringList>
+#include <QStringLiteral>
+#include <QTemporaryDir>
+#include <gtest/gtest.h>
+
+namespace
+{
+/**
+ * @brief Creates the GUI application QPixmap needs, using the offscreen plugin.
+ *
+ * The theme-migration binary is headless; creating this lazily keeps its other
+ * tests free of a display dependency.
+ */
+void ensureGuiApplication()
+{
+    static int argc = 1;
+    static char name[] = "theme_icon_test";
+    static char *argv[] = {name, nullptr};
+    // Leaked on purpose: a function-local static QApplication is destroyed before Qt's
+    // own library statics at exit, and the network module's destructors then run
+    // against a torn-down QObject layer (SEGV under AddressSanitizer).
+    static QApplication *app = new QApplication(argc, argv);
+    Q_UNUSED(app);
+}
+
+QString resourcesDir()
+{
+    return QDir(QStringLiteral(COCKATRICE_SOURCE_DIR)).absoluteFilePath(QStringLiteral("cockatrice/resources"));
+}
+
+int countOpaquePixels(const QPixmap &pixmap, const QColor &expected)
+{
+    const QImage image = pixmap.toImage();
+    int count = 0;
+    for (int y = 0; y < image.height(); ++y) {
+        for (int x = 0; x < image.width(); ++x) {
+            const QColor pixel = image.pixelColor(x, y);
+            if (pixel.alpha() > 200 && pixel.red() == expected.red() && pixel.green() == expected.green() &&
+                pixel.blue() == expected.blue()) {
+                ++count;
+            }
+        }
+    }
+    return count;
+}
+
+QByteArray svgWith(const QByteArray &colorToken)
+{
+    return QByteArrayLiteral(R"(<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill=")") +
+           colorToken + QByteArrayLiteral(R"(" d="M2 2h20v20H2z"/></svg>)");
+}
+
+/**
+ * @brief Restores the global theme search paths and palette after each test.
+ *
+ * The icon engine reads both process-wide values, so a failing assertion must
+ * not leak a temporary theme directory or palette into the next test.
+ */
+class ThemeIconRenderTest : public ::testing::Test
+{
+protected:
+    void SetUp() override
+    {
+        qputenv("QT_QPA_PLATFORM", "offscreen");
+        ensureGuiApplication();
+        savedSearchPaths = QDir::searchPaths(QStringLiteral("theme"));
+        savedPalette = qApp->palette();
+        themeManager = new ThemeManager;
+        QDir::setSearchPaths(QStringLiteral("theme"), {resourcesDir()});
+    }
+
+    void TearDown() override
+    {
+        delete themeManager;
+        themeManager = nullptr;
+        QDir::setSearchPaths(QStringLiteral("theme"), savedSearchPaths);
+        qApp->setPalette(savedPalette);
+    }
+
+    QStringList savedSearchPaths; ///< Search paths captured before the test.
+    QPalette savedPalette;        ///< Application palette captured before the test.
+};
+
+/** @brief A non-square request must letterbox, not squash, a 24×24 glyph. */
+TEST_F(ThemeIconRenderTest, NonSquareRequestPreservesAspectRatio)
+{
+    const QIcon icon = loadThemedIcon(QStringLiteral("icons/player"));
+    ASSERT_FALSE(icon.isNull());
+
+    EXPECT_EQ(icon.actualSize(QSize(20, 15)), QSize(15, 15));
+
+    const QPixmap pixmap = icon.pixmap(QSize(20, 15));
+    ASSERT_FALSE(pixmap.isNull());
+    EXPECT_EQ(pixmap.deviceIndependentSize(), QSizeF(15, 15));
+}
+
+/** @brief The engine must follow palette flips, icon modes, and DPR. */
+TEST_F(ThemeIconRenderTest, ThemedIconFollowsPaletteModeAndDpr)
+{
+    QPalette palette = qApp->palette();
+    palette.setColor(QPalette::WindowText, QColor(QStringLiteral("#123456")));
+    qApp->setPalette(palette);
+
+    const QIcon icon = loadThemedIcon(QStringLiteral("icons/search"));
+    ASSERT_FALSE(icon.isNull());
+
+    const QPixmap normal = icon.pixmap(QSize(24, 24), 1.0);
+    ASSERT_FALSE(normal.isNull());
+    EXPECT_EQ(normal.size(), QSize(24, 24));
+    EXPECT_DOUBLE_EQ(normal.devicePixelRatio(), 1.0);
+    EXPECT_GT(countOpaquePixels(normal, QColor(QStringLiteral("#123456"))), 0);
+
+    const QPixmap hidpi = icon.pixmap(QSize(24, 24), 2.0);
+    ASSERT_FALSE(hidpi.isNull());
+    EXPECT_DOUBLE_EQ(hidpi.devicePixelRatio(), 2.0);
+    EXPECT_EQ(hidpi.deviceIndependentSize(), QSizeF(24, 24));
+
+    palette.setColor(QPalette::WindowText, QColor(QStringLiteral("#abcdef")));
+    qApp->setPalette(palette);
+    const QPixmap flipped = icon.pixmap(QSize(24, 24), 1.0);
+    EXPECT_GT(countOpaquePixels(flipped, QColor(QStringLiteral("#abcdef"))), 0);
+
+    QPalette selectedPalette = qApp->palette();
+    selectedPalette.setColor(QPalette::HighlightedText, QColor(QStringLiteral("#00ff00")));
+    qApp->setPalette(selectedPalette);
+    const QPixmap selected = icon.pixmap(QSize(24, 24), 1.0, QIcon::Selected, QIcon::Off);
+    EXPECT_GT(countOpaquePixels(selected, QColor(QStringLiteral("#00ff00"))), 0);
+}
+} // namespace
+
+TEST_F(ThemeIconRenderTest, SentinelUsesPaletteColor)
+{
+    QPalette palette;
+    palette.setColor(QPalette::WindowText, QColor(Qt::white));
+    qApp->setPalette(palette);
+
+    const QPixmap pixmap = loadSentinelSvgPixmap(QStringLiteral("icons/search.svg"));
+
+    ASSERT_FALSE(pixmap.isNull());
+    EXPECT_EQ(pixmap.size(), QSize(24, 24));
+    EXPECT_GT(countOpaquePixels(pixmap, Qt::white), 0);
+}
+
+TEST_F(ThemeIconRenderTest, NonSentinelSvgReturnsNull)
+{
+    QTemporaryDir themeDir;
+    ASSERT_TRUE(themeDir.isValid());
+    QFile file(QDir(themeDir.path()).absoluteFilePath(QStringLiteral("plain.svg")));
+    ASSERT_TRUE(file.open(QIODevice::WriteOnly));
+    file.write(svgWith("#000000"));
+    file.close();
+    QDir::addSearchPath(QStringLiteral("theme"), themeDir.path());
+
+    EXPECT_TRUE(loadSentinelSvgPixmap(QStringLiteral("plain.svg")).isNull());
+    EXPECT_TRUE(loadSentinelSvgPixmap(QStringLiteral("icons/search.png")).isNull());
+}
+
+TEST_F(ThemeIconRenderTest, LowercaseSentinelIsResolved)
+{
+    QTemporaryDir themeDir;
+    ASSERT_TRUE(themeDir.isValid());
+    QFile file(QDir(themeDir.path()).absoluteFilePath(QStringLiteral("lower.svg")));
+    ASSERT_TRUE(file.open(QIODevice::WriteOnly));
+    file.write(svgWith("currentcolor"));
+    file.close();
+
+    QDir::addSearchPath(QStringLiteral("theme"), themeDir.path());
+
+    QPalette palette;
+    palette.setColor(QPalette::WindowText, QColor(QStringLiteral("#123456")));
+    qApp->setPalette(palette);
+
+    const QPixmap pixmap = loadSentinelSvgPixmap(QStringLiteral("lower.svg"));
+
+    ASSERT_FALSE(pixmap.isNull());
+    EXPECT_GT(countOpaquePixels(pixmap, QColor(QStringLiteral("#123456"))), 0);
+}

tests/user_games_model_test.cpp

@@ -0,0 +1,248 @@
+#include "interface/widgets/server/user/user_games_model.h"
+
+#include <QAbstractItemModelTester>
+#include <QCoreApplication>
+#include <QPersistentModelIndex>
+#include <QSignalSpy>
+#include <gtest/gtest.h>
+#include <libcockatrice/network/client/abstract/abstract_client.h>
+#include <libcockatrice/protocol/pb/commands.pb.h>
+#include <libcockatrice/protocol/pb/response.pb.h>
+#include <libcockatrice/protocol/pb/response_get_games_of_user.pb.h>
+#include <libcockatrice/protocol/pb/server_message.pb.h>
+#include <libcockatrice/protocol/pending_command.h>
+#include <libcockatrice/rng/rng_abstract.h>
+#include <memory>
+
+RNG_Abstract *rng = nullptr; // required by the transitive server library; this suite sends no game commands
+
+namespace
+{
+class GamesClient : public AbstractClient
+{
+public:
+    QList<CommandContainer> sent;
+
+    GamesClient()
+    {
+        setStatus(StatusLoggedIn);
+    }
+
+    ~GamesClient() override
+    {
+        qDeleteAll(pendingCommands);
+        pendingCommands.clear();
+    }
+
+    void changeStatus(ClientStatus status)
+    {
+        setStatus(status);
+    }
+
+    void answer(int request, Response response)
+    {
+        response.set_cmd_id(sent.at(request).cmd_id());
+        ServerMessage message;
+        message.set_message_type(ServerMessage::RESPONSE);
+        *message.mutable_response() = response;
+        processProtocolItem(message);
+    }
+
+protected:
+    void sendCommandContainer(const CommandContainer &command) override
+    {
+        sent.append(command);
+    }
+};
+
+Response gamesResponse(std::initializer_list<int> ids)
+{
+    Response response;
+    response.set_response_code(Response::RespOk);
+    auto *games = response.MutableExtension(Response_GetGamesOfUser::ext);
+    for (int id : ids) {
+        auto *game = games->add_game_list();
+        game->set_game_id(id);
+        game->set_room_id(7);
+    }
+    return response;
+}
+
+using State = UserGamesModel::State;
+
+TEST(UserGamesModel, OfflineUserDoesNotSendARequest)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", false);
+    model.refresh();
+    EXPECT_TRUE(client.sent.isEmpty());
+    EXPECT_EQ(State::Offline, model.getState());
+    EXPECT_FALSE(model.canRefresh());
+    EXPECT_EQ(0, model.rowCount());
+}
+
+TEST(UserGamesModel, PresenceLossInvalidatesTheOutstandingResponse)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    EXPECT_EQ(State::Loading, model.getState());
+    EXPECT_FALSE(model.canRefresh());
+    model.setUser("Alice", false);
+    client.answer(0, gamesResponse({1}));
+    EXPECT_EQ(State::Offline, model.getState());
+    EXPECT_EQ(0, model.rowCount());
+
+    model.setUser("Alice", true);
+    client.answer(1, gamesResponse({2}));
+    EXPECT_EQ(State::Ready, model.getState());
+    EXPECT_TRUE(model.canRefresh());
+    EXPECT_EQ(2, model.data(model.index(0), UserGamesModel::GameRole).value<ServerInfo_Game>().game_id());
+}
+
+TEST(UserGamesModel, SwitchingBackToTheSameUserDoesNotAcceptTheirOldRequest)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    model.setUser("Bob", true);
+    model.setUser("Alice", true);
+    client.answer(2, gamesResponse({3}));
+    client.answer(0, gamesResponse({1}));
+    client.answer(1, gamesResponse({2}));
+    EXPECT_EQ(1, model.rowCount());
+    EXPECT_EQ(3, model.data(model.index(0), UserGamesModel::GameRole).value<ServerInfo_Game>().game_id());
+}
+
+TEST(UserGamesModel, RefreshSupersedesThePreviousRequest)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    model.refresh();
+    client.answer(0, gamesResponse({1}));
+    EXPECT_EQ(State::Loading, model.getState());
+    EXPECT_EQ(0, model.rowCount());
+    client.answer(1, gamesResponse({2}));
+    EXPECT_EQ(State::Ready, model.getState());
+    EXPECT_EQ(2, model.data(model.index(0), UserGamesModel::GameRole).value<ServerInfo_Game>().game_id());
+}
+
+TEST(UserGamesModel, EmptySuccessAndMissingPayloadAreDifferentStates)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    client.answer(0, gamesResponse({}));
+    EXPECT_EQ(State::Empty, model.getState());
+    EXPECT_TRUE(model.canRefresh());
+
+    model.refresh();
+    Response missingPayload;
+    missingPayload.set_response_code(Response::RespOk);
+    client.answer(1, missingPayload);
+    EXPECT_EQ(State::Error, model.getState());
+    EXPECT_TRUE(model.canRefresh());
+}
+
+TEST(UserGamesModel, FailedRequestsCanBeRetried)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    Response error;
+    error.set_response_code(Response::RespNameNotFound);
+    client.answer(0, error);
+    EXPECT_EQ(State::Error, model.getState());
+    model.refresh();
+    client.answer(1, gamesResponse({4}));
+    EXPECT_EQ(State::Ready, model.getState());
+}
+
+TEST(UserGamesModel, DisconnectRejectsLateRepliesAndReconnectFetchesAgain)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    model.setUser("Alice", true);
+    client.changeStatus(StatusDisconnecting);
+    client.answer(0, gamesResponse({1}));
+    EXPECT_EQ(State::Disconnected, model.getState());
+    EXPECT_FALSE(model.canRefresh());
+    model.refresh();
+    EXPECT_EQ(1, client.sent.size());
+    client.changeStatus(StatusLoggedIn);
+    client.answer(1, gamesResponse({2}));
+    EXPECT_EQ(State::Ready, model.getState());
+}
+
+TEST(UserGamesModel, ClientDestructionClearsGamesAndDisablesRefresh)
+{
+    auto client = std::make_unique<GamesClient>();
+    UserGamesModel model(client.get());
+    model.setUser("Alice", true);
+    client->answer(0, gamesResponse({1}));
+    client.reset();
+    EXPECT_EQ(State::Disconnected, model.getState());
+    EXPECT_EQ(0, model.rowCount());
+    EXPECT_FALSE(model.canRefresh());
+    model.refresh();
+    EXPECT_EQ(State::Disconnected, model.getState());
+}
+
+TEST(UserGamesModel, ResetInvalidatesAnOpenGameActionAndPreservesTheModelContract)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    QAbstractItemModelTester tester(&model, QAbstractItemModelTester::FailureReportingMode::Fatal);
+    model.setUser("Alice", true);
+    client.answer(0, gamesResponse({1, 2, 3}));
+    QPersistentModelIndex selected(model.index(1));
+    EXPECT_TRUE(selected.isValid());
+    model.refresh();
+    EXPECT_FALSE(selected.isValid());
+    EXPECT_EQ(0, model.rowCount());
+    client.answer(1, gamesResponse({4}));
+    EXPECT_EQ(1, model.rowCount());
+}
+
+TEST(UserGamesModel, StateListenerCanSelectAnotherUserBeforeTheRequestIsSent)
+{
+    GamesClient client;
+    UserGamesModel model(&client);
+    bool switched = false;
+    QObject::connect(&model, &UserGamesModel::stateChanged, &model, [&] {
+        if (!switched && model.getState() == State::Loading) {
+            switched = true;
+            model.setUser("Bob", false);
+        }
+    });
+    model.setUser("Alice", true);
+    EXPECT_TRUE(client.sent.isEmpty());
+    EXPECT_EQ(State::Offline, model.getState());
+}
+
+TEST(UserGamesModel, TimedOutResponseCannotReplaceARetry)
+{
+    GamesClient client;
+    UserGamesModel model(&client, 50);
+    model.setUser("Alice", true);
+    QSignalSpy changes(&model, &UserGamesModel::stateChanged);
+    ASSERT_TRUE(changes.wait(1000));
+    ASSERT_EQ(State::Error, model.getState());
+    EXPECT_TRUE(model.canRefresh());
+    model.refresh();
+    client.answer(0, gamesResponse({1}));
+    EXPECT_EQ(State::Loading, model.getState());
+    client.answer(1, gamesResponse({2}));
+    EXPECT_EQ(State::Ready, model.getState());
+    EXPECT_EQ(2, model.data(model.index(0), UserGamesModel::GameRole).value<ServerInfo_Game>().game_id());
+}
+} // namespace
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}