Merge e540126056 into df74917cb0

cockatrice/src/interface/widgets/visual_database_display/visual_database_display_color_filter_widget.cpp

@@ -15,9 +15,58 @@
 #include <QtGlobal>
 #include <libcockatrice/filters/filter_tree.h>
 
+namespace
+{
 /**
- * This widget provides a graphical control element for the CardFilter::Attr::AttrColor filters applied to the filter
- * model.
+ * @brief Information about the behaviour of a filter mode.
+ */
+struct FilterModeInfo
+{
+    // When a color symbol is enabled, add filters of this type. Skipped if equal to CardFilter::Type::TypeEnd.
+    CardFilter::Type includeType;
+
+    // When a color symbol is disabled, add filters of this type. Skipped if equal to CardFilter::Type::TypeEnd.
+    CardFilter::Type excludeType;
+
+    // The attribute to filter for when adding the filters.
+    CardFilter::Attr attr;
+};
+
+/** @brief Return information about the given filter mode. */
+static FilterModeInfo getFilterModeInfo(FilterMode filterMode)
+{
+    switch (filterMode) {
+        case FilterMode::Includes:
+            return {CardFilter::Type::TypeOr, CardFilter::Type::TypeEnd, CardFilter::Attr::AttrColor};
+        case FilterMode::Excludes:
+            return {CardFilter::Type::TypeAndNot, CardFilter::Type::TypeEnd, CardFilter::Attr::AttrColor};
+        case FilterMode::IncludeExclude:
+            return {CardFilter::Type::TypeOr, CardFilter::Type::TypeAndNot, CardFilter::Attr::AttrColor};
+        case FilterMode::ExactMatch:
+            return {CardFilter::Type::TypeAnd, CardFilter::Type::TypeAndNot, CardFilter::Attr::AttrColor};
+        case FilterMode::ColorIdentity:
+            return {CardFilter::Type::TypeEnd, CardFilter::Type::TypeAndNot, CardFilter::Attr::AttrColorIdentity};
+        case FilterMode::Custom:
+        case FilterMode::End:
+            break;
+    }
+    return {CardFilter::Type::TypeEnd, CardFilter::Type::TypeEnd, CardFilter::Attr::AttrEnd};
+}
+
+/** @brief Remove the filters that apply to the given color and attribute from the given model. */
+static void removeFilters(FilterTreeModel *filterModel, QChar color, CardFilter::Attr attr)
+{
+    for (const CardFilter *filter : filterModel->getFiltersOfType(attr)) {
+        if (filter->term() == color) {
+            filterModel->removeFilter(filter);
+        }
+    }
+}
+} // namespace
+
+/**
+ * This widget provides a graphical control element for the CardFilter::Attr::AttrColor and
+ * CardFilter::Attr::AttrColorIdentity filters applied to the filter model.
  * @param parent The Qt Widget that this widget will parent to
  * @param _filterModel The filter model that this widget will manipulate
  */
@@ -59,11 +108,25 @@ void VisualDatabaseDisplayColorFilterWidget::retranslateUi()
     modeComboBox->blockSignals(true);
     modeComboBox->clear();
 
-    modeComboBox->addItem(tr("Exact match"), QVariant::fromValue(FilterMode::ExactMatch));
     modeComboBox->addItem(tr("Includes"), QVariant::fromValue(FilterMode::Includes));
+    modeComboBox->addItem(tr("Excludes"), QVariant::fromValue(FilterMode::Excludes));
     modeComboBox->addItem(tr("Include / Exclude"), QVariant::fromValue(FilterMode::IncludeExclude));
+    modeComboBox->addItem(tr("Exact match"), QVariant::fromValue(FilterMode::ExactMatch));
+    modeComboBox->addItem(tr("Color identity"), QVariant::fromValue(FilterMode::ColorIdentity));
+
+    modeComboBox->setItemData(0, tr("Cards containing any of the selected colors"), Qt::ToolTipRole);
+    modeComboBox->setItemData(1, tr("Cards containing none of the selected colors"), Qt::ToolTipRole);
+    modeComboBox->setItemData(2, tr("Cards containing any of the selected colors and none of the unselected colors"),
+                              Qt::ToolTipRole);
+    modeComboBox->setItemData(3, tr("Cards being exactly of the selected colors"), Qt::ToolTipRole);
+    modeComboBox->setItemData(4, tr("Cards whose color identity fits within the selected colors"), Qt::ToolTipRole);
+
+    if (currentMode == FilterMode::Custom) {
+        addCustomFilterModeItem();
+    }
 
     modeComboBox->setToolTip(tr("How selected and unselected colors are combined in the filter"));
+    modeComboBox->setAccessibleName(tr("Color filter mode"));
 
     // Restore current mode
     const int index = modeComboBox->findData(QVariant::fromValue(currentMode));
@@ -74,6 +137,28 @@ void VisualDatabaseDisplayColorFilterWidget::retranslateUi()
     modeComboBox->blockSignals(false);
 }
 
+void VisualDatabaseDisplayColorFilterWidget::setFilterMode(FilterMode filterMode)
+{
+    int index = modeComboBox->findData(QVariant::fromValue(filterMode));
+
+    if (index < 0 && filterMode == FilterMode::Custom) {
+        index = modeComboBox->count();
+        addCustomFilterModeItem();
+    }
+
+    if (index >= 0) {
+        modeComboBox->setCurrentIndex(index);
+    }
+}
+
+void VisualDatabaseDisplayColorFilterWidget::addCustomFilterModeItem()
+{
+    int customIndex = modeComboBox->count();
+    modeComboBox->addItem(tr("Custom"), QVariant::fromValue(FilterMode::Custom));
+    modeComboBox->setItemData(customIndex, tr("Cards matching an unknown combination of color filters"),
+                              Qt::ToolTipRole);
+}
+
 void VisualDatabaseDisplayColorFilterWidget::handleColorToggled(QChar color, bool active)
 {
     if (active) {
@@ -85,74 +170,24 @@ void VisualDatabaseDisplayColorFilterWidget::handleColorToggled(QChar color, boo
 
 void VisualDatabaseDisplayColorFilterWidget::addFilter(QChar color)
 {
-    QString colorString = color;
-    QString typeStr;
+    FilterModeInfo info = getFilterModeInfo(currentMode);
 
-    // Remove previous filters
+    removeFilters(filterModel, color, info.attr);
 
-    QList<const CardFilter *> allColorFilters = filterModel->getFiltersOfType(CardFilter::Attr::AttrColor);
-    QList<const CardFilter *> matchingFilters;
-
-    for (const CardFilter *filter : allColorFilters) {
-        if (filter->term() == color) {
-            matchingFilters.append(filter);
-        }
-    }
-
-    for (const CardFilter *filter : matchingFilters) {
-        filterModel->removeFilter(filter);
-    }
-
-    // Add actual filter
-
-    switch (currentMode) {
-        case FilterMode::ExactMatch:
-            filterModel->addFilter(new CardFilter(colorString, CardFilter::Type::TypeAnd, CardFilter::Attr::AttrColor));
-            break;
-
-        case FilterMode::Includes:
-            filterModel->addFilter(new CardFilter(colorString, CardFilter::Type::TypeOr, CardFilter::Attr::AttrColor));
-            break;
-
-        case FilterMode::IncludeExclude:
-            filterModel->addFilter(new CardFilter(colorString, CardFilter::Type::TypeOr, CardFilter::Attr::AttrColor));
-            break;
+    if (info.includeType != CardFilter::Type::TypeEnd) {
+        filterModel->addFilter(new CardFilter(color, info.includeType, info.attr));
     }
 }
 
 void VisualDatabaseDisplayColorFilterWidget::removeFilter(QChar color)
 {
-    QString colorString = color;
+    FilterModeInfo info = getFilterModeInfo(currentMode);
 
-    // Remove inclusion filters
-    QList<const CardFilter *> allColorFilters = filterModel->getFiltersOfType(CardFilter::Attr::AttrColor);
-    QList<const CardFilter *> matchingFilters;
+    removeFilters(filterModel, color, info.attr);
 
-    for (const CardFilter *filter : allColorFilters) {
-        if (filter->term() == color) {
-            matchingFilters.append(filter);
-        }
-    }
-
-    for (const CardFilter *filter : matchingFilters) {
-        filterModel->removeFilter(filter);
-    }
-
-    // Add exclusion filters if the mode demands it
-    switch (currentMode) {
-        case FilterMode::ExactMatch:
-            filterModel->addFilter(
-                new CardFilter(colorString, CardFilter::Type::TypeAndNot, CardFilter::Attr::AttrColor));
-            break;
-
-        case FilterMode::IncludeExclude:
-            filterModel->addFilter(
-                new CardFilter(colorString, CardFilter::Type::TypeAndNot, CardFilter::Attr::AttrColor));
-            break;
-
-        case FilterMode::Includes:
-            // No exclusion in Includes mode
-            break;
+    // Add exclusion filters if the mode demands it.
+    if (info.excludeType != CardFilter::Type::TypeEnd) {
+        filterModel->addFilter(new CardFilter(color, info.excludeType, info.attr));
     }
 }
 
@@ -169,6 +204,7 @@ void VisualDatabaseDisplayColorFilterWidget::updateFilterMode()
     filterModel->filterTree()->blockSignals(true);
 
     filterModel->clearFiltersOfType(CardFilter::Attr::AttrColor);
+    filterModel->clearFiltersOfType(CardFilter::Attr::AttrColorIdentity);
 
     const QList<ManaSymbolWidget *> manaSymbolWidgets = findChildren<ManaSymbolWidget *>();
 
@@ -211,52 +247,94 @@ QList<QChar> VisualDatabaseDisplayColorFilterWidget::getActiveColors()
 
 void VisualDatabaseDisplayColorFilterWidget::syncWithFilterModel()
 {
-    QList<const CardFilter *> allColorFilters = filterModel->getFiltersOfType(CardFilter::Attr::AttrColor);
+    // Determine the correct currentMode from the filter model by finding which modes
+    // are not possible due to the model containing (a combination of) filters that
+    // that mode cannot add.
+    constexpr int modeCount = static_cast<int>(FilterMode::End);
+    bool modeImpossible[modeCount] = {};
 
-    QList<ManaSymbolWidget *> manaSymbolWidgets = findChildren<ManaSymbolWidget *>();
+    QList<const CardFilter *> filters;
+    filters.append(filterModel->getFiltersOfType(CardFilter::Attr::AttrColor));
+    filters.append(filterModel->getFiltersOfType(CardFilter::Attr::AttrColorIdentity));
 
-    for (ManaSymbolWidget *manaSymbolWidget : manaSymbolWidgets) {
+    for (int i = 0; i < modeCount; ++i) {
+        FilterModeInfo modeInfo = getFilterModeInfo(static_cast<FilterMode>(i));
+
+        // Remove the modes that cannot create one of the filters.
+        for (const CardFilter *filter : filters) {
+            if (filter->attr() != modeInfo.attr ||
+                (filter->type() != modeInfo.includeType && filter->type() != modeInfo.excludeType)) {
+                modeImpossible[i] = true;
+                break;
+            }
+        }
+
+        // Modes that have both an include and exclude filter should always have a filter for each color.
+        if (modeInfo.includeType != CardFilter::Type::TypeEnd && modeInfo.excludeType != CardFilter::Type::TypeEnd &&
+            !modeImpossible[i]) {
+            for (const QChar &color : QString("WUBRG")) {
+                int count = 0;
+                for (const CardFilter *filter : filters) {
+                    count += filter->term() == color;
+                }
+                if (count != 1) {
+                    modeImpossible[i] = true;
+                    break;
+                }
+            }
+        }
+    }
+
+    // If the current mode is not possible with the current filters, set it to the first
+    // one that is. Switching to and from the custom mode is always possible.
+    if (modeImpossible[static_cast<int>(currentMode)] || currentMode == FilterMode::Custom) {
+        for (int i = 0; i < modeCount; ++i) {
+            if (!modeImpossible[i] || i == static_cast<int>(FilterMode::Custom)) {
+                currentMode = static_cast<FilterMode>(i);
+                break;
+            }
+        }
+    }
+
+    // Update the combobox. Add a Custom item only if we have a custom filter mode.
+    int customIndex = modeComboBox->findData(QVariant::fromValue(FilterMode::Custom));
+    modeComboBox->blockSignals(true);
+    if (currentMode == FilterMode::Custom) {
+        if (customIndex < 0) {
+            customIndex = modeComboBox->count();
+            addCustomFilterModeItem();
+        }
+        modeComboBox->setCurrentIndex(customIndex);
+    } else {
+        if (customIndex >= 0) {
+            modeComboBox->removeItem(customIndex);
+        }
+        int index = modeComboBox->findData(QVariant::fromValue(currentMode));
+        if (index >= 0) {
+            modeComboBox->setCurrentIndex(index);
+        }
+    }
+    modeComboBox->blockSignals(false);
+
+    // Update the mana symbol widgets by looking for the current mode's include or exclude filters.
+    const FilterModeInfo modeInfo = getFilterModeInfo(currentMode);
+
+    const bool useExclude =
+        modeInfo.includeType == CardFilter::Type::TypeEnd && modeInfo.excludeType != CardFilter::Type::TypeEnd;
+    const CardFilter::Type filterType = useExclude ? modeInfo.excludeType : modeInfo.includeType;
+
+    filters = filterModel->getFiltersOfType(modeInfo.attr);
+
+    for (ManaSymbolWidget *manaSymbolWidget : findChildren<ManaSymbolWidget *>()) {
         bool found = false;
-        for (const CardFilter *filter : allColorFilters) {
-            if (manaSymbolWidget->getSymbolChar() == filter->term()) {
-                switch (currentMode) {
-                    case FilterMode::ExactMatch:
-                        switch (filter->type()) {
-                            case CardFilter::Type::TypeAnd:
-                                setManaSymbolActive(filter->term().at(0), true);
-                                break;
-                            default:
-                                setManaSymbolActive(filter->term().at(0), false);
-                                break;
-                        }
-                        break;
-                    case FilterMode::Includes:
-                        switch (filter->type()) {
-                            case CardFilter::Type::TypeOr:
-                                setManaSymbolActive(filter->term().at(0), true);
-                                break;
-                            default:
-                                setManaSymbolActive(filter->term().at(0), false);
-                                break;
-                        }
-                        break;
-                    case FilterMode::IncludeExclude:
-                        switch (filter->type()) {
-                            case CardFilter::Type::TypeOr:
-                                setManaSymbolActive(filter->term().at(0), true);
-                                break;
-                            default:
-                                setManaSymbolActive(filter->term().at(0), false);
-                                break;
-                        }
-                        break;
-                }
+        for (const CardFilter *filter : filters) {
+            if (filter->type() == filterType && manaSymbolWidget->getSymbolChar() == filter->term()) {
                 found = true;
+                break;
             }
         }
 
-        if (!found) {
-            setManaSymbolActive(manaSymbolWidget->getSymbolChar(), false);
-        }
+        manaSymbolWidget->setColorActive(useExclude ? !found : found);
+        manaSymbolWidget->setDisabled(currentMode == FilterMode::Custom);
     }
 }

cockatrice/src/interface/widgets/visual_database_display/visual_database_display_color_filter_widget.h

@@ -40,9 +40,14 @@ private:
 
 enum class FilterMode
 {
+    Includes = 0,   // Include selected colors (OR condition).
+    Excludes,       // Exclude selected colors (AND NOT).
+    IncludeExclude, // Include selected colors (OR) and exclude unselected colors (AND NOT).
     ExactMatch,     // Only selected colors are included, all others are excluded.
-    Includes,      // Include selected colors (OR condition).
-    IncludeExclude // Include selected colors (OR) and exclude unselected colors (AND NOT).
+    ColorIdentity,  // Keep cards whose color identity is a subset of the selected colors (stored as AND NOT for each
+                    // unselected color).
+    Custom,         // The color filters do not match any of the above modes. Not included in the combo box.
+    End
 };
 
 Q_DECLARE_METATYPE(FilterMode)
@@ -54,11 +59,13 @@ class VisualDatabaseDisplayColorFilterWidget : public QWidget
 public:
     explicit VisualDatabaseDisplayColorFilterWidget(QWidget *parent, FilterTreeModel *filterModel);
     void retranslateUi();
+    void setFilterMode(FilterMode filterMode);
 
 signals:
     void filterModeChanged(FilterMode filterMode);
 
 private slots:
+    void addCustomFilterModeItem();
     void handleColorToggled(QChar color, bool active);
     void addFilter(QChar color);
     void removeFilter(QChar color);

cockatrice/src/interface/widgets/visual_database_display/visual_database_display_widget.cpp

@@ -160,6 +160,7 @@ VisualDatabaseDisplayWidget::VisualDatabaseDisplayWidget(QWidget *parent,
     connect(clearFilterWidget, &QToolButton::clicked, this, [this] {
         filterModel->blockSignals(true);
         filterModel->filterTree()->blockSignals(true);
+        colorFilterWidget->setFilterMode(FilterMode::Includes);
         filterModel->clear();
         filterModel->blockSignals(false);
         filterModel->filterTree()->blockSignals(false);

libcockatrice_card/libcockatrice/card/card_info.cpp

@@ -316,6 +316,10 @@ void CardInfo::setColors(const QString &value)
 {
     setProperty(Mtg::Colors, value);
 }
+QString CardInfo::getColorIdentity() const
+{
+    return getProperty(Mtg::ColorIdentity);
+}
 QString CardInfo::getLoyalty() const
 {
     return getProperty(Mtg::Loyalty);

libcockatrice_card/libcockatrice/card/card_info.h

@@ -469,6 +469,7 @@ public:
     [[nodiscard]] QString getCmc() const;
     [[nodiscard]] QString getColors() const;
     void setColors(const QString &value);
+    [[nodiscard]] QString getColorIdentity() const;
     [[nodiscard]] QString getLoyalty() const;
     [[nodiscard]] QString getMainCardType() const;
     [[nodiscard]] QString getManaCost() const;

libcockatrice_filters/libcockatrice/filters/filter_card.cpp

@@ -69,6 +69,8 @@ const QString CardFilter::attrName(Attr a)
             return tr("Type");
         case AttrColor:
             return tr("Color");
+        case AttrColorIdentity:
+            return tr("Color Identity");
         case AttrText:
             return tr("Text");
         case AttrSet:

libcockatrice_filters/libcockatrice/filters/filter_card.h

@@ -32,6 +32,7 @@ public:
     {
         AttrCmc = 0,
         AttrColor,
+        AttrColorIdentity,
         AttrLoyalty,
         AttrManaCost,
         AttrName,

libcockatrice_filters/libcockatrice/filters/filter_string.cpp

@@ -409,7 +409,7 @@ static void setupParserRules()
         const bool identity = sv.tokens[0].empty() || sv.tokens[0][0] != 'i';
         if (sv.tokens[1][0] == ':') {
             return [=](const CardData &x) {
-                const QString match = identity ? x->getColors() : x->getProperty("coloridentity");
+                const QString match = identity ? x->getColors() : x->getColorIdentity();
                 if (parts.contains("m") && match.length() < 2) {
                     return false;
                 }
@@ -427,7 +427,7 @@ static void setupParserRules()
         }
 
         return [=](const CardData &x) {
-            const QString match = identity ? x->getColors() : x->getProperty("colorIdentity");
+            const QString match = identity ? x->getColors() : x->getColorIdentity();
             if (parts.contains("m") && match.length() < 2) {
                 return false;
             }

libcockatrice_filters/libcockatrice/filters/filter_tree.cpp

@@ -176,23 +176,24 @@ FilterItem::FilterItem(QString trm, FilterItemList *parent) : p(parent), term(st
     lowercaseTerm = term.toLower();
 
     switch (attr()) {
-        case CardFilter::AttrColor: {
-            QString converted = term.trimmed();
+        case CardFilter::AttrColor:
+        case CardFilter::AttrColorIdentity: {
+            QString converted = term.trimmed().toLower();
 
-            converted.replace("green", "g", Qt::CaseInsensitive);
-            converted.replace("grn", "g", Qt::CaseInsensitive);
-            converted.replace("blue", "u", Qt::CaseInsensitive);
-            converted.replace("blu", "u", Qt::CaseInsensitive);
-            converted.replace("black", "b", Qt::CaseInsensitive);
-            converted.replace("blk", "b", Qt::CaseInsensitive);
-            converted.replace("red", "r", Qt::CaseInsensitive);
-            converted.replace("white", "w", Qt::CaseInsensitive);
-            converted.replace("wht", "w", Qt::CaseInsensitive);
-            converted.replace("colorless", "c", Qt::CaseInsensitive);
-            converted.replace("colourless", "c", Qt::CaseInsensitive);
-            converted.replace("none", "c", Qt::CaseInsensitive);
+            converted.replace("green", "g");
+            converted.replace("grn", "g");
+            converted.replace("blue", "u");
+            converted.replace("blu", "u");
+            converted.replace("black", "b");
+            converted.replace("blk", "b");
+            converted.replace("red", "r");
+            converted.replace("white", "w");
+            converted.replace("wht", "w");
+            converted.replace("colorless", "c");
+            converted.replace("colourless", "c");
+            converted.replace("none", "c");
 
-            converted.replace(QString(" "), QString(""), Qt::CaseInsensitive);
+            converted.replace(QString(" "), QString(""));
 
             convertedColorTerm = converted;
             break;
@@ -358,12 +359,17 @@ bool FilterItem::acceptSubType(const CardInfoPtr &info) const
     return subType.contains(term, Qt::CaseInsensitive);
 }
 
-bool FilterItem::acceptColor(const CardInfoPtr &info) const
+/**
+ * @brief Return true when every letter of the given term appears in the given colors string.
+ * If the term is equal to "c", then only return true if the color string is empty.
+ *
+ * @param term The letters which should be included, or "c"
+ * @param colors The string to check for letters in
+ */
+static bool matchesColor(const QString &term, const QString &colors)
 {
-    const QString colors = info->getColors();
-
     // Colorless card filter
-    if (convertedColorTerm.toLower() == "c" && colors.length() < 1) {
+    if (term == "c" && colors.length() < 1) {
         return true;
     }
 
@@ -372,13 +378,23 @@ bool FilterItem::acceptColor(const CardInfoPtr &info) const
      * then we should match all of them to the card's colors
      */
     int match_count = 0;
-    for (const QChar &color : convertedColorTerm) {
+    for (const QChar &color : term) {
         if (colors.contains(color, Qt::CaseInsensitive)) {
             match_count++;
         }
     }
 
-    return match_count == convertedColorTerm.length();
+    return match_count == term.length();
+}
+
+bool FilterItem::acceptColor(const CardInfoPtr &info) const
+{
+    return matchesColor(convertedColorTerm, info->getColors());
+}
+
+bool FilterItem::acceptColorIdentity(const CardInfoPtr &info) const
+{
+    return matchesColor(convertedColorTerm, info->getColorIdentity());
 }
 
 bool FilterItem::acceptText(const CardInfoPtr &info, const CardSearchLanguage &searchLanguage) const
@@ -540,6 +556,8 @@ bool FilterItem::acceptCardAttr(const CardInfoPtr &info,
             return acceptType(info);
         case CardFilter::AttrColor:
             return acceptColor(info);
+        case CardFilter::AttrColorIdentity:
+            return acceptColorIdentity(info);
         case CardFilter::AttrText:
             return acceptText(info, searchLanguage);
         case CardFilter::AttrSet:

libcockatrice_filters/libcockatrice/filters/filter_tree.h

@@ -244,6 +244,7 @@ public:
     [[nodiscard]] bool acceptMainType(const CardInfoPtr &info) const;
     [[nodiscard]] bool acceptSubType(const CardInfoPtr &info) const;
     [[nodiscard]] bool acceptColor(const CardInfoPtr &info) const;
+    [[nodiscard]] bool acceptColorIdentity(const CardInfoPtr &info) const;
     [[nodiscard]] bool acceptText(const CardInfoPtr &info, const CardSearchLanguage &searchLanguage) const;
     [[nodiscard]] bool acceptSet(const CardInfoPtr &info) const;
     [[nodiscard]] bool acceptManaCost(const CardInfoPtr &info) const;

tests/carddatabase/CMakeLists.txt

@@ -21,10 +21,12 @@ cockatrice_add_test(
 )
 
 # ------------------------
-# Filter String Test
-# (guard must match the condition for libcockatrice_filters in the root CMakeLists.txt)
+# Guard to match condition for libcockatrice_filters in the root CMakeLists.txt
 # ------------------------
 if(WITH_ORACLE OR WITH_CLIENT)
+  # ------------------------
+  # Filter String Test
+  # ------------------------
   cockatrice_add_test(
     NAME
     filter_string_test
@@ -36,6 +38,20 @@ if(WITH_ORACLE OR WITH_CLIENT)
     libcockatrice_filters
   )
 
+  # ------------------------
+  # Filter Tree Test
+  # ------------------------
+  cockatrice_add_test(
+    NAME
+    filter_tree_test
+    SOURCES
+    ${VERSION_STRING_CPP}
+    filter_tree_test.cpp
+    mocks.cpp
+    LIBS
+    libcockatrice_filters
+  )
+
   # ------------------------
   # Visual Display Model Test
   # ------------------------

tests/carddatabase/filter_tree_test.cpp

@@ -0,0 +1,204 @@
+
+#include "libcockatrice/filters/filter_tree.h"
+
+#include <gtest/gtest.h>
+#include <libcockatrice/card/card_localization.h>
+#include <libcockatrice/filters/filter_string.h>
+
+namespace
+{
+class FilterTreeTest : public ::testing::Test
+{
+protected:
+    void SetUp() override
+    {
+        language = CardSearchLanguage{};
+
+        island = CardInfo::newInstance("Island", "", false, {{"colors", ""}, {"coloridentity", "U"}}, {}, {}, {}, {});
+        artifact =
+            CardInfo::newInstance("Artifact", "", false, {{"colors", ""}, {"coloridentity", ""}}, {}, {}, {}, {});
+        truth = CardInfo::newInstance("Truth", "", false, {{"colors", "U"}, {"coloridentity", "U"}}, {}, {}, {}, {});
+        notDead =
+            CardInfo::newInstance("Not Dead", "", false, {{"colors", "B"}, {"coloridentity", "B"}}, {}, {}, {}, {});
+        wallOfDenial = CardInfo::newInstance("Wall of Denial", "", false, {{"colors", "WU"}, {"coloridentity", "WU"}},
+                                             {}, {}, {}, {});
+        maelstromAngel = CardInfo::newInstance("Maelstrom Archangel", "", false,
+                                               {{"colors", "WUBRG"}, {"coloridentity", "WUBRG"}}, {}, {}, {}, {});
+    }
+
+    CardSearchLanguage language;
+
+    CardData island;         // c/u
+    CardData artifact;       // c
+    CardData truth;          // u
+    CardData notDead;        // b
+    CardData wallOfDenial;   // wu
+    CardData maelstromAngel; // wubrg
+};
+} // namespace
+
+// =====================================================================================================================
+// acceptColor
+// =====================================================================================================================
+
+TEST_F(FilterTreeTest, Color)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "wu");
+    ASSERT_FALSE(filterTree.acceptsCard(island, language));
+    ASSERT_FALSE(filterTree.acceptsCard(artifact, language));
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_TRUE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorColorless)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "c");
+    ASSERT_TRUE(filterTree.acceptsCard(island, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_FALSE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_FALSE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorNot)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAndNot, "b");
+    ASSERT_TRUE(filterTree.acceptsCard(island, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    ASSERT_TRUE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_FALSE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorAliases)
+{
+    FilterTree filterTree;
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "green");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(maelstromAngel, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "grn");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(maelstromAngel, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "blue");
+    ASSERT_TRUE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "blu");
+    ASSERT_TRUE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "black");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(notDead, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "blk");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(notDead, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "red");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(maelstromAngel, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "white");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "wht");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "colorless");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "colourless");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    filterTree.clear();
+
+    filterTree.termNode(CardFilter::Attr::AttrColor, CardFilter::Type::TypeAnd, "none");
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    filterTree.clear();
+}
+
+// =====================================================================================================================
+// acceptColorIdentity
+// =====================================================================================================================
+
+TEST_F(FilterTreeTest, ColorIdentity)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAnd, "wu");
+    ASSERT_FALSE(filterTree.acceptsCard(island, language));
+    ASSERT_FALSE(filterTree.acceptsCard(artifact, language));
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_TRUE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorIdentityColorless)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAnd, "c");
+    ASSERT_FALSE(filterTree.acceptsCard(island, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    ASSERT_FALSE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_FALSE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_FALSE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorIdentityNot)
+{
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAndNot, "b");
+    ASSERT_TRUE(filterTree.acceptsCard(island, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    ASSERT_TRUE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_FALSE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+TEST_F(FilterTreeTest, ColorIdentityMultiple)
+{
+    // Simulate a WU commander.
+    FilterTree filterTree;
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAndNot, "b");
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAndNot, "r");
+    filterTree.termNode(CardFilter::Attr::AttrColorIdentity, CardFilter::Type::TypeAndNot, "g");
+    ASSERT_TRUE(filterTree.acceptsCard(island, language));
+    ASSERT_TRUE(filterTree.acceptsCard(artifact, language));
+    ASSERT_TRUE(filterTree.acceptsCard(truth, language));
+    ASSERT_FALSE(filterTree.acceptsCard(notDead, language));
+    ASSERT_TRUE(filterTree.acceptsCard(wallOfDenial, language));
+    ASSERT_FALSE(filterTree.acceptsCard(maelstromAngel, language));
+}
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}