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Turns out these were needed by animations, just our animation system has no unit tests so I missed that fact earlier. Add a basic animation unit test that fails without anchor support, and add binding anchors back in. Currently a private API as I suspect this feature shouldn't be needed outside the framework.pull/13970/head
Steven Kirk
3 years ago
13 changed files with 185 additions and 25 deletions
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using System; |
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using Avalonia.Animation; |
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using Avalonia.Controls; |
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using Avalonia.Data; |
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using Avalonia.Styling; |
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using Avalonia.UnitTests; |
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using Xunit; |
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namespace Avalonia.Base.UnitTests.Animation; |
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using Animation = global::Avalonia.Animation.Animation; |
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public class StyleAnimationTests |
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{ |
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[Fact] |
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public void Application_ControlTheme_Applies_Animation() |
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{ |
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using var app = new AnimationTestApplication |
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{ |
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Resources = |
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{ |
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{ typeof(Button), CreateControlTheme<Button>(CreateOpacityAnimation()) }, |
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}, |
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}; |
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var target = new Button(); |
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var root = CreateRoot(target, app); |
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app.Clock.Pulse(TimeSpan.Zero); |
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Assert.Equal(1, target.Opacity); |
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app.Clock.Pulse(TimeSpan.FromSeconds(0.5)); |
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Assert.Equal(0.5, target.Opacity); |
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app.Clock.Pulse(TimeSpan.FromSeconds(1)); |
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Assert.Equal(0, target.Opacity); |
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} |
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[Fact] |
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public void Application_ControlTheme_Applies_Animation_With_Bound_KeyFrame_Values() |
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{ |
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var fromBinding = new Binding("From"); |
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var toBinding = new Binding("To"); |
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using var app = new AnimationTestApplication |
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{ |
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Resources = |
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{ |
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{ typeof(Button), CreateControlTheme<Button>(CreateOpacityAnimation(fromBinding, toBinding)) }, |
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}, |
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}; |
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var target = new Button { DataContext = new KeyFrameValues(1.0, 0.0) }; |
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var root = CreateRoot(target, app); |
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app.Clock.Pulse(TimeSpan.Zero); |
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Assert.Equal(1, target.Opacity); |
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app.Clock.Pulse(TimeSpan.FromSeconds(0.5)); |
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Assert.Equal(0.5, target.Opacity); |
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app.Clock.Pulse(TimeSpan.FromSeconds(1)); |
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Assert.Equal(0, target.Opacity); |
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} |
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private static ControlTheme CreateControlTheme<T>(Animation animation) |
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{ |
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return new ControlTheme(typeof(T)) |
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{ |
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Animations = { animation } |
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}; |
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} |
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private static object CreateRoot(Button child, Application app) |
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{ |
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var root = new TestRoot{ StylingParent = app }; |
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root.Child = child; |
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root.LayoutManager.ExecuteInitialLayoutPass(); |
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return root; |
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} |
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private static Animation CreateOpacityAnimation() |
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{ |
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return CreateOpacityAnimation(1.0, 0.0); |
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} |
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private static Animation CreateOpacityAnimation(object from, object to) |
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{ |
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return new Animation |
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{ |
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Duration = TimeSpan.FromSeconds(1), |
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FillMode = FillMode.Both, |
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Children = |
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{ |
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new KeyFrame |
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{ |
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KeyTime = TimeSpan.FromSeconds(0), |
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Setters = { new Setter(Button.OpacityProperty, from) } |
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}, |
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new KeyFrame |
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{ |
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KeyTime = TimeSpan.FromSeconds(1), |
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Setters = {new Setter(Button.OpacityProperty, to) } |
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}, |
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} |
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}; |
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} |
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private class AnimationTestApplication : Application, IDisposable |
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{ |
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private readonly IDisposable _lifetime; |
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public AnimationTestApplication() |
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{ |
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var services = new TestServices(globalClock: Clock); |
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_lifetime = UnitTestApplication.Start(services); |
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} |
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public MockGlobalClock Clock { get; } = new MockGlobalClock(); |
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public void Dispose() => _lifetime.Dispose(); |
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} |
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private record KeyFrameValues(double From, double To); |
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} |
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