109 строки
2.9 KiB
C#
109 строки
2.9 KiB
C#
//
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// UIGestureRecognizer Unit Tests
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//
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// Authors:
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// Sebastien Pouliot <sebastien@xamarin.com>
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//
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// Copyright 2013 Xamarin Inc.
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//
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#if !__WATCHOS__ && !MONOMAC
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using System;
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using System.Collections.Generic;
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using Foundation;
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using UIKit;
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using NUnit.Framework;
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namespace MonoTouchFixtures.UIKit {
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[TestFixture]
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// we want the test to be availble if we use the linker
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[Preserve (AllMembers = true)]
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public class GestureRecognizerTest {
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[Test]
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public void DoubleDispose ()
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{
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using (var gr = new UIGestureRecognizer ()) {
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gr.Dispose ();
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}
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}
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[Test]
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public void Null ()
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{
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using (var gr = new UIGestureRecognizer (Null)) {
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// ensure documented null-friendly methods actually are before releasing them in the wild
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gr.LocationInView (null);
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// can't call LocationOfTouch, 0 is not valid if there's no touch event
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// gr.LocationOfTouch (0, null);
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gr.RemoveTarget (null, null);
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}
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}
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[Test]
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[Ignore ("Issue: https://github.com/xamarin/maccore/issues/1345 && WIP PR: https://github.com/xamarin/xamarin-macios/pull/5462")]
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public void NoStrongCycles ()
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{
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bool finalizedAnyCtor = false;
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bool finalizedAnyAddTarget1 = false;
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bool finalizedAnyAddTarget2 = false;
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// Add the gesture recognizers to a list so that they're not collected until after the test
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// This is to avoid false positives (the callback should be collectible already after disposing the gesture recognizer).
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var list = new List<UIGestureRecognizer> ();
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var pool = new NSAutoreleasePool ();
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for (var k = 0; k < 10; k++) {
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{
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var notifier = new FinalizerNotifier (() => finalizedAnyCtor = true);
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using (var gr = new UIGestureRecognizer (() => {
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GC.KeepAlive (notifier); // Make sure the 'notifier' instance is only collected if the delegate to UIGestureRecognizer is collectable.
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})) {
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list.Add (gr);
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}
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}
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{
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var notifier = new FinalizerNotifier (() => finalizedAnyAddTarget1 = true);
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using (var gr = new UIGestureRecognizer ()) {
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gr.AddTarget (() => { GC.KeepAlive (notifier); });
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list.Add (gr);
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}
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}
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{
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var notifier = new FinalizerNotifier (() => finalizedAnyAddTarget2 = true);
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using (var gr = new UIGestureRecognizer ()) {
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gr.AddTarget ((obj) => { GC.KeepAlive (notifier); });
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list.Add (gr);
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}
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}
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}
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pool.Dispose ();
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TestRuntime.RunAsync (DateTime.Now.AddSeconds (1), () => { GC.Collect (); }, () => finalizedAnyCtor && finalizedAnyAddTarget1 && finalizedAnyAddTarget2);
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Assert.IsTrue (finalizedAnyCtor, "Any finalized");
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Assert.IsTrue (finalizedAnyAddTarget1, "AddTarget1 finalized");
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Assert.IsTrue (finalizedAnyAddTarget2, "AddTarget2 finalized");
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GC.KeepAlive (list);
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}
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class FinalizerNotifier
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{
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public Action Action;
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public FinalizerNotifier (Action action)
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{
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Action = action;
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}
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~FinalizerNotifier ()
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{
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if (Action != null)
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Action ();
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}
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}
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}
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}
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#endif // !__WATCHOS__
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