Introduce QTestPrivate::androidCompatibleShow() helper function

This function should be used in QWidget-related test cases instead of
QWidget::show() when you need to move or resize the widget and then
compare its position or geometry with the expected value.
The reason for introducing it is that on Android QWidget::show() is
showing the widget maximized by default, so its position and size
can't be changed.

Task-number: QTBUG-87668
Pick-to: 6.3 6.2
Change-Id: I8ec5c07b73968b98d924a41e5d41ddb4d7be1ced
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/testlib/qtesthelpers_p.h

@@ -104,6 +104,19 @@ static inline void setFrameless(QWidget *w)
              | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
     w->setWindowFlags(flags);
 }
+
+static inline void androidCompatibleShow(QWidget *widget)
+{
+    // On Android QWidget::show() shows the widget maximized, so if we need
+    // to move or resize the widget, we need to explicitly call
+    // QWidget::setVisible(true) instead, because that's what show() actually
+    // does on desktop platforms.
+#ifdef Q_OS_ANDROID
+    widget->setVisible(true);
+#else
+    widget->show();
+#endif
+}
 #endif // QT_WIDGETS_LIB
 
 } // namespace QTestPrivate