[Tests] Replay XML test files through a headless runner

cockatrice/src/interface/recording.h

@@ -0,0 +1,54 @@
+#ifndef COCKATRICE_RECORDING_H
+#define COCKATRICE_RECORDING_H
+
+#include "pqEventObserver.h"
+#include "pqEventSource.h"
+
+#include <QLoggingCategory>
+#include <QScopedPointer>
+
+inline Q_LOGGING_CATEGORY(RecordingLog, "recording");
+
+class QXmlStreamReader;
+class QXmlStreamWriter;
+
+/**
+ * @brief Writes a session recording as an XML test file.
+ *
+ * The events are buffered in memory and flushed to the stream when recording
+ * ends, because the stream is handed over once the file name is known.
+ */
+class XMLEventObserver : public pqEventObserver
+{
+    QScopedPointer<QXmlStreamWriter> xmlStream;
+    QString xmlString;
+
+public:
+    explicit XMLEventObserver(QObject *parent);
+    ~XMLEventObserver() override;
+
+protected:
+    void setStream(QTextStream *stream) override;
+    void onRecordEvent(const QString &widget,
+                       const QString &command,
+                       const QString &arguments,
+                       const int &eventType) override;
+};
+
+/**
+ * @brief Plays the events of an XML test file back, one at a time.
+ */
+class XMLEventSource : public pqEventSource
+{
+    QScopedPointer<QXmlStreamReader> xmlStream;
+
+public:
+    explicit XMLEventSource(QObject *parent);
+    ~XMLEventSource() override;
+
+protected:
+    void setContent(const QString &xmlFileName) override;
+    int getNextEvent(QString &widget, QString &command, QString &arguments, int &eventType) override;
+};
+
+#endif // COCKATRICE_RECORDING_H