public async Task EnsureOnAppearingFiresForPushedPage()
{
Shell shell = new TestShell();
shell.Items.Add(CreateShellItem());
shell.Navigation.PushAsync(new LifeCyclePage());
var page = (LifeCyclePage)shell.GetVisiblePage();
Assert.IsTrue(page.Appearing);
Assert.IsTrue(page.ParentSet);
}
public async Task EnsureOnAppearingFiresForNavigatedToPage()
{
Shell shell = new TestShell();
shell.Items.Add(CreateShellItem());
await shell.GoToAsync("LifeCyclePage");
var page = (LifeCyclePage)shell.GetVisiblePage();
Assert.IsTrue(page.Appearing);
Assert.IsTrue(page.ParentSet);
}
public async Task EnsureOnAppearingFiresForLastPageOnly()
{
Shell shell = new TestShell();
LifeCyclePage shellContentPage = new LifeCyclePage();
shell.Items.Add(CreateShellItem(page: shellContentPage));
await shell.GoToAsync("LifeCyclePage/LifeCyclePage");
var page = (LifeCyclePage)shell.GetVisiblePage();
var nonVisiblePage = (LifeCyclePage)shell.Navigation.NavigationStack[1];
Assert.IsFalse(nonVisiblePage.Appearing);
Assert.IsTrue(page.Appearing);
}