public async Task ValidateOverlayBrush()
{
TestCleanupWrapper cleanup;
CalendarDatePicker calendarDatePicker = null;
await RunOnUIThread(() =>
{
calendarDatePicker = new CalendarDatePicker();
calendarDatePicker.LightDismissOverlayMode = LightDismissOverlayMode.On;
TestServices.WindowHelper.WindowContent = calendarDatePicker;
});
await TestServices.WindowHelper.WaitForIdle();
TestServices.InputHelper.Tap(calendarDatePicker);
await TestServices.WindowHelper.WaitForIdle();
FlyoutBase flyout = null;
await RunOnUIThread(() =>
{
var root = FrameworkElement(VisualTreeHelper.GetChild(calendarDatePicker, 0));
flyout = FlyoutBase.GetAttachedFlyout(root);
THROW_IF_NULL_WITH_MSG(flyout, "An overlay element should exist for the flyout.");
});
FlyoutHelper.ValidateOpenFlyoutOverlayBrush("CalendarDatePickerLightDismissOverlayBackground");
FlyoutHelper.HideFlyout(flyout);
}
