Max Katz
3 years ago
committed by
GitHub
GitHub
6 changed files with 321 additions and 122 deletions
@ -1,66 +1,243 @@ |
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using System; |
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using Avalonia.LogicalTree; |
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using Avalonia.UnitTests; |
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using Xunit; |
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using System.Linq; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using Avalonia.Animation; |
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using Avalonia.Controls.Presenters; |
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using Avalonia.Controls.Templates; |
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using Avalonia.Headless; |
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using Avalonia.Layout; |
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using Avalonia.UnitTests; |
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using Avalonia.VisualTree; |
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using Xunit; |
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#nullable enable |
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namespace Avalonia.Controls.UnitTests |
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{ |
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public class TransitioningContentControlTests |
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{ |
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[Fact] |
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public void Old_Content_Shuold_Be_Removed__From_Logical_Tree_After_Out_Animation() |
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public void Transition_Should_Not_Be_Run_When_First_Shown() |
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{ |
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using var app = Start(); |
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var (target, transition) = CreateTarget("foo"); |
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Assert.Equal(0, transition.StartCount); |
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} |
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[Fact] |
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public void TransitionContentPresenter_Should_Initially_Be_Hidden() |
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{ |
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using var app = Start(); |
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var (target, transition) = CreateTarget("foo"); |
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var transitionPresenter = GetTransitionContentPresenter(target); |
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Assert.False(transitionPresenter.IsVisible); |
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} |
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[Fact] |
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public void Transition_Should_Be_Run_On_Layout() |
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{ |
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using var app = Start(); |
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var (target, transition) = CreateTarget("foo"); |
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target.Content = "bar"; |
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Assert.Equal(0, transition.StartCount); |
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Layout(target); |
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Assert.Equal(1, transition.StartCount); |
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} |
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[Fact] |
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public void Control_Transition_Should_Be_Run_On_Layout() |
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{ |
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using var app = Start(); |
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var (target, transition) = CreateTarget(new Button()); |
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target.Content = new Canvas(); |
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Assert.Equal(0, transition.StartCount); |
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Layout(target); |
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Assert.Equal(1, transition.StartCount); |
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} |
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[Fact] |
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public void ContentPresenters_Should_Be_Setup_For_Transition() |
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{ |
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using var app = Start(); |
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var (target, transition) = CreateTarget("foo"); |
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var transitionPresenter = GetTransitionContentPresenter(target); |
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target.Content = "bar"; |
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Layout(target); |
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Assert.True(transitionPresenter.IsVisible); |
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Assert.Equal("bar", target.Presenter!.Content); |
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Assert.Equal("foo", transitionPresenter.Content); |
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} |
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[Fact] |
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public void TransitionContentPresenter_Should_Be_Hidden_When_Transition_Completes() |
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{ |
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using var app = Start(); |
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using var sync = UnitTestSynchronizationContext.Begin(); |
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var (target, transition) = CreateTarget("foo"); |
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var transitionPresenter = GetTransitionContentPresenter(target); |
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target.Content = "bar"; |
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Layout(target); |
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Assert.True(transitionPresenter.IsVisible); |
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transition.Complete(); |
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sync.ExecutePostedCallbacks(); |
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Assert.False(transitionPresenter.IsVisible); |
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} |
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[Fact] |
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public void Transition_Should_Be_Canceled_If_Content_Changes_While_Running() |
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{ |
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using (UnitTestApplication.Start(TestServices.StyledWindow)) |
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using var app = Start(); |
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using var sync = UnitTestSynchronizationContext.Begin(); |
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var (target, transition) = CreateTarget("foo"); |
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var transitionPresenter = GetTransitionContentPresenter(target); |
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target.Content = "bar"; |
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Layout(target); |
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target.Content = "baz"; |
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Assert.Equal(0, transition.CancelCount); |
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Layout(target); |
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Assert.Equal(1, transition.CancelCount); |
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} |
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[Fact] |
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public void New_Transition_Should_Be_Started_If_Content_Changes_While_Running() |
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{ |
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using var app = Start(); |
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using var sync = UnitTestSynchronizationContext.Begin(); |
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var (target, transition) = CreateTarget("foo"); |
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var transitionPresenter = GetTransitionContentPresenter(target); |
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target.Content = "bar"; |
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Layout(target); |
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target.Content = "baz"; |
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var startedRaised = 0; |
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transition.Started += (from, to, forward) => |
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{ |
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var testTransition = new TestTransition(); |
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var fromPresenter = Assert.IsType<ContentPresenter>(from); |
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var toPresenter = Assert.IsType<ContentPresenter>(to); |
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Assert.Same(transitionPresenter, fromPresenter); |
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Assert.Same(target.Presenter, toPresenter); |
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Assert.Equal("bar", fromPresenter.Content); |
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Assert.Equal("baz", toPresenter.Content); |
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Assert.True(forward); |
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Assert.Equal(1, transition.CancelCount); |
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var target = new TransitioningContentControl(); |
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target.PageTransition = testTransition; |
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++startedRaised; |
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}; |
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var root = new TestRoot() { Child = target }; |
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Layout(target); |
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sync.ExecutePostedCallbacks(); |
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Assert.Equal(1, startedRaised); |
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Assert.Equal("baz", target.Presenter!.Content); |
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Assert.Equal("bar", transitionPresenter.Content); |
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} |
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var oldControl = new Control(); |
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var newControl = new Control(); |
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private static IDisposable Start() |
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{ |
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return UnitTestApplication.Start( |
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TestServices.MockThreadingInterface.With( |
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fontManagerImpl: new HeadlessFontManagerStub(), |
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renderInterface: new HeadlessPlatformRenderInterface(), |
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textShaperImpl: new HeadlessTextShaperStub())); |
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} |
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target.Content = oldControl; |
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Threading.Dispatcher.UIThread.RunJobs(); |
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private static (TransitioningContentControl, TestTransition) CreateTarget(object content) |
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{ |
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var transition = new TestTransition(); |
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var target = new TransitioningContentControl |
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{ |
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Content = content, |
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PageTransition = transition, |
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Template = CreateTemplate(), |
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}; |
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Assert.Equal(target, oldControl.GetLogicalParent()); |
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Assert.Equal(null, newControl.GetLogicalParent()); |
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var root = new TestRoot(target); |
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root.LayoutManager.ExecuteInitialLayoutPass(); |
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return (target, transition); |
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} |
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testTransition.BeginTransition += isFrom => |
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private static IControlTemplate CreateTemplate() |
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{ |
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return new FuncControlTemplate((x, ns) => |
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{ |
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return new Panel |
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{ |
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// Old out
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if (isFrom) |
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Children = |
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{ |
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Assert.Equal(target, oldControl.GetLogicalParent()); |
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Assert.Equal(null, newControl.GetLogicalParent()); |
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} |
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// New in
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else |
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{ |
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Assert.Equal(null, oldControl.GetLogicalParent()); |
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Assert.Equal(target, newControl.GetLogicalParent()); |
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new ContentPresenter |
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{ |
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Name = "PART_ContentPresenter", |
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[!ContentPresenter.ContentProperty] = x[!ContentControl.ContentProperty], |
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}, |
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new ContentPresenter |
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{ |
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Name = "PART_TransitionContentPresenter", |
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}, |
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} |
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}; |
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}); |
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} |
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target.Content = newControl; |
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Threading.Dispatcher.UIThread.RunJobs(); |
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} |
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private static ContentPresenter GetTransitionContentPresenter(TransitioningContentControl target) |
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{ |
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return Assert.IsType<ContentPresenter>(target |
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.GetTemplateChildren() |
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.First(x => x.Name == "PART_TransitionContentPresenter")); |
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} |
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} |
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public class TestTransition : IPageTransition |
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{ |
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public event Action<bool> BeginTransition; |
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public Task Start(Visual from, Visual to, bool forward, CancellationToken cancellationToken) |
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private void Layout(Control c) |
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{ |
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bool isFrom = from != null && to == null; |
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BeginTransition?.Invoke(isFrom); |
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return Task.CompletedTask; |
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(c.GetVisualRoot() as ILayoutRoot)?.LayoutManager.ExecuteLayoutPass(); |
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} |
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private class TestTransition : IPageTransition |
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{ |
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private TaskCompletionSource? _tcs; |
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public int StartCount { get; private set; } |
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public int FinishCount { get; private set; } |
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public int CancelCount { get; private set; } |
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public event Action<Visual?, Visual?, bool>? Started; |
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public async Task Start(Visual? from, Visual? to, bool forward, CancellationToken cancellationToken) |
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{ |
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++StartCount; |
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Started?.Invoke(from, to, forward); |
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if (_tcs is not null) |
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throw new InvalidOperationException("Transition already running"); |
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_tcs = new TaskCompletionSource(); |
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cancellationToken.Register(() => _tcs.TrySetResult()); |
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await _tcs.Task; |
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_tcs = null; |
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if (!cancellationToken.IsCancellationRequested) |
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++FinishCount; |
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else |
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++CancelCount; |
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} |
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public void Complete() => _tcs!.TrySetResult(); |
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} |
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} |
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} |
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