public async Task PopToAModalPage()
{
var firstPage = new LCPage();
var firstModalPage = new LCPage();
var secondModalPage = new LCPage();
var window = new Window(firstPage);
await window.Navigation.PushModalAsync(firstModalPage);
await window.Navigation.PushModalAsync(secondModalPage);
firstModalPage.ClearNavigationArgs();
secondModalPage.ClearNavigationArgs();
await window.Navigation.PopModalAsync();
Assert.IsNotNull(secondModalPage.NavigatingFromArgs);
Assert.AreEqual(secondModalPage, firstModalPage.NavigatedToArgs.PreviousPage);
Assert.AreEqual(firstModalPage, secondModalPage.NavigatedFromArgs.DestinationPage);
Assert.AreEqual(1, secondModalPage.DisappearingCount);
Assert.AreEqual(1, secondModalPage.AppearingCount);
Assert.AreEqual(1, firstModalPage.DisappearingCount);
Assert.AreEqual(2, firstModalPage.AppearingCount);
}