public void ShowPopupTest()
{
// for code coverage
UITester.Dispatcher.Invoke(() =>
{
var popup = TutorialDialog.ShowPopup(testTutorialDialog.Manager, "Title", "Text", PlacementMode.Center, UITester.MainWindow);
Assert.IsInstanceOfType(popup, typeof(Popup));
Assert.IsTrue(popup.IsOpen);
popup.IsOpen = false;
});
}