tests: Move some ifdefed code to their respective platforms

src/qtcommon/Platform_qt.cpp

@@ -10,6 +10,7 @@
 */
 
 #include "Platform_qt.h"
+#include "KDDockWidgets.h"
 #include "Window_qt.h"
 
 #include <QWindow>
@@ -156,4 +157,10 @@ void Platform_qt::tests_sendEvent(Window::Ptr window, QEvent *ev) const
     qApp->sendEvent(static_cast<Window_qt *>(window.get())->qtWindow(), ev);
 }
 
+void Platform_qt::tests_initTests() const
+{
+    qApp->setOrganizationName(QStringLiteral("KDAB"));
+    qApp->setApplicationName(QStringLiteral("dockwidgets-unit-tests"));
+}
+
 #endif