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using System;
using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
#if UITEST
using Xamarin.UITest;
using NUnit.Framework;
using Xamarin.UITest.iOS;
#endif
namespace Xamarin.Forms.Controls.Issues
{
[Preserve (AllMembers = true)]
[Issue (IssueTracker.Bugzilla, 32801, "Memory Leak in TabbedPage + NavigationPage")]
public class Bugzilla32801 : TestTabbedPage // or TestMasterDetailPage, etc ...
{
protected override void Init ()
{
Children.Add (new NavigationPage (new TestDemoPage (1)) { Title = "Tab", Icon = "bank.png" });
Children.Add (new NavigationPage (new TestDemoPage (1)) { Title = "Tab 1", Icon = "bank.png" });
}
public class TestDemoPage : ContentPage
{
int _level = 0;
public TestDemoPage (int level)
{
_level = level;
System.Diagnostics.Debug.WriteLine ("Page Level {0} : Created", _level);
Title = string.Format ("Level {0}", level);
var lblStack = new Label ();
var buttonAdd = new Button {
Text = "Add Level",
AutomationId = "btnAdd",
BackgroundColor = Color.Aqua
};
buttonAdd.Clicked += (sender, e) => Navigation.PushAsync (new TestDemoPage (_level + 1));
var buttonStack = new Button {
Text = "Show Navigation Stack",
AutomationId = "btnStack",
BackgroundColor = Color.Aqua
};
buttonStack.Clicked += (object sender, EventArgs e) => {
lblStack.Text = "Stack " + Navigation.NavigationStack.Count.ToString ();
System.Diagnostics.Debug.WriteLine ("------------------------------------------------------------");
foreach (TestDemoPage page in Navigation.NavigationStack)
System.Diagnostics.Debug.WriteLine ("Items On Navigation Stack =====> Level {0}", page._level);
System.Diagnostics.Debug.WriteLine ("------------------------------------------------------------");
};
Content = new StackLayout {
Padding = new Thickness (20.0),
Spacing = 20.0,
Children = {
buttonAdd, buttonStack, lblStack
}
};
}
~TestDemoPage ()
{
System.Diagnostics.Debug.WriteLine ("Page Level {0} : Destroyed", _level);
}
}
#if UITEST && __IOS__
[Test]
public void Bugzilla32801Test ()
{
RunningApp.Tap (c => c.Marked ("btnAdd"));
RunningApp.Tap (c => c.Marked ("btnAdd"));
RunningApp.Tap (c => c.Marked ("btnStack"));
RunningApp.WaitForElement (c => c.Marked ("Stack 3"));
RunningApp.Tap (c => c.Marked ("Tab"));
RunningApp.Tap (c => c.Marked ("btnStack"));
RunningApp.WaitForElement (c => c.Marked ("Stack 1"));
}
[TearDown]
public void TearDown()
{
RunningApp.SetOrientationPortrait ();
}
#endif
}
}
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