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Bugzilla31366.cs
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Bugzilla31366.cs
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using System;
using System.Threading.Tasks;
using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
#if UITEST
using NUnit.Framework;
using Xamarin.UITest;
#endif
namespace Xamarin.Forms.Controls.Issues
{
[Preserve (AllMembers = true)]
[Issue (IssueTracker.Bugzilla, 31366, "Pushing and then popping a page modally causes ArgumentOutOfRangeException",
PlatformAffected.All)]
public class Bugzilla31366 : TestNavigationPage
{
protected override void Init ()
{
var page1 = new ContentPage () { Title = "Page1" };
var successLabel = new Label ();
var startPopOnAppearing = new Button () { Text = "Start PopOnAppearing Test" };
var startModalStack = new Button () { Text = "Start ModalStack Test" };
page1.Content = new StackLayout () {
Children = { startPopOnAppearing, startModalStack, successLabel }
};
var popOnAppearing = new ContentPage () {
Title = "PopOnAppearing",
Content = new StackLayout ()
};
popOnAppearing.Appearing += async (sender, args) => {
await Task.Yield ();
await popOnAppearing.Navigation.PopModalAsync ();
};
startPopOnAppearing.Clicked += async (sender, args) => {
successLabel.Text = string.Empty;
await page1.Navigation.PushModalAsync (popOnAppearing);
successLabel.Text = "If this is visible, the PopOnAppearing test has passed.";
};
startModalStack.Clicked += async (sender, args) => {
successLabel.Text = string.Empty;
var intermediatePage = new ContentPage () {
Content = new StackLayout () {
Children = {
new Label () { Text = "If this is visible, the modal stack test has passed." }
}
}
};
await intermediatePage.Navigation.PushModalAsync (popOnAppearing);
await page1.Navigation.PushModalAsync (intermediatePage);
};
PushAsync (page1);
}
#if UITEST
[Test]
[UiTest (typeof (NavigationPage))]
public void Issue31366PushingAndPoppingModallyCausesArgumentOutOfRangeException ()
{
RunningApp.Tap (q => q.Marked ("Start PopOnAppearing Test"));
RunningApp.WaitForElement (q => q.Marked ("If this is visible, the PopOnAppearing test has passed."));
}
[Test]
[UiTest (typeof (NavigationPage))]
public void Issue31366PushingWithModalStackCausesIncorrectStackOrder ()
{
RunningApp.Tap (q => q.Marked ("Start ModalStack Test"));
RunningApp.WaitForElement (q => q.Marked ("If this is visible, the modal stack test has passed."));
}
#endif
}
}