Dariusz Komosiński
6 years ago
committed by
GitHub
GitHub
67 changed files with 1430 additions and 523 deletions
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// Copyright (c) The Avalonia Project. All rights reserved.
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// Licensed under the MIT license. See licence.md file in the project root for full license information.
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Reactive.Linq; |
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using System.Reactive.Subjects; |
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using Avalonia.Data; |
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using Xunit; |
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namespace Avalonia.Base.UnitTests |
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{ |
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public class AvaloniaObjectTests_OnPropertyChanged |
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{ |
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[Fact] |
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public void OnPropertyChangedCore_Is_Called_On_Property_Change() |
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{ |
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var target = new Class1(); |
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target.SetValue(Class1.FooProperty, "newvalue"); |
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Assert.Equal(1, target.CoreChanges.Count); |
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var change = (AvaloniaPropertyChangedEventArgs<string>)target.CoreChanges[0]; |
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Assert.Equal("newvalue", change.NewValue.Value); |
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Assert.Equal("foodefault", change.OldValue.Value); |
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Assert.Equal(BindingPriority.LocalValue, change.Priority); |
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Assert.True(change.IsEffectiveValueChange); |
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} |
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[Fact] |
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public void OnPropertyChangedCore_Is_Called_On_Non_Effective_Property_Value_Change() |
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{ |
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var target = new Class1(); |
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target.SetValue(Class1.FooProperty, "newvalue"); |
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target.SetValue(Class1.FooProperty, "styled", BindingPriority.Style); |
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Assert.Equal(2, target.CoreChanges.Count); |
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var change = (AvaloniaPropertyChangedEventArgs<string>)target.CoreChanges[1]; |
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Assert.Equal("styled", change.NewValue.Value); |
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Assert.False(change.OldValue.HasValue); |
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Assert.Equal(BindingPriority.Style, change.Priority); |
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Assert.False(change.IsEffectiveValueChange); |
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} |
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[Fact] |
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public void OnPropertyChangedCore_Is_Called_On_All_Binding_Property_Changes() |
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{ |
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var target = new Class1(); |
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var style = new Subject<BindingValue<string>>(); |
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var animation = new Subject<BindingValue<string>>(); |
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var templatedParent = new Subject<BindingValue<string>>(); |
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target.Bind(Class1.FooProperty, style, BindingPriority.Style); |
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target.Bind(Class1.FooProperty, animation, BindingPriority.Animation); |
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target.Bind(Class1.FooProperty, templatedParent, BindingPriority.TemplatedParent); |
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style.OnNext("style1"); |
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templatedParent.OnNext("tp1"); |
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animation.OnNext("a1"); |
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templatedParent.OnNext("tp2"); |
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templatedParent.OnCompleted(); |
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animation.OnNext("a2"); |
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style.OnNext("style2"); |
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style.OnCompleted(); |
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animation.OnCompleted(); |
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var changes = target.CoreChanges.Cast<AvaloniaPropertyChangedEventArgs<string>>(); |
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Assert.Equal( |
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new[] { true, true, true, false, false, true, false, false, true }, |
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changes.Select(x => x.IsEffectiveValueChange).ToList()); |
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Assert.Equal( |
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new[] { "style1", "tp1", "a1", "tp2", "$unset", "a2", "style2", "$unset", "foodefault" }, |
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changes.Select(x => x.NewValue.GetValueOrDefault("$unset")).ToList()); |
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Assert.Equal( |
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new[] { "foodefault", "style1", "tp1", "$unset", "$unset", "a1", "$unset", "$unset", "a2" }, |
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changes.Select(x => x.OldValue.GetValueOrDefault("$unset")).ToList()); |
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} |
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[Fact] |
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public void OnPropertyChanged_Is_Called_Only_For_Effective_Value_Changes() |
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{ |
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var target = new Class1(); |
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target.SetValue(Class1.FooProperty, "newvalue"); |
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target.SetValue(Class1.FooProperty, "styled", BindingPriority.Style); |
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Assert.Equal(1, target.Changes.Count); |
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Assert.Equal(2, target.CoreChanges.Count); |
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} |
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private class Class1 : AvaloniaObject |
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{ |
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public static readonly StyledProperty<string> FooProperty = |
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AvaloniaProperty.Register<Class1, string>("Foo", "foodefault"); |
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public Class1() |
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{ |
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Changes = new List<AvaloniaPropertyChangedEventArgs>(); |
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CoreChanges = new List<AvaloniaPropertyChangedEventArgs>(); |
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} |
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public List<AvaloniaPropertyChangedEventArgs> Changes { get; } |
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public List<AvaloniaPropertyChangedEventArgs> CoreChanges { get; } |
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protected override void OnPropertyChangedCore<T>(AvaloniaPropertyChangedEventArgs<T> change) |
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{ |
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CoreChanges.Add(Clone(change)); |
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base.OnPropertyChangedCore(change); |
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} |
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protected override void OnPropertyChanged<T>(AvaloniaPropertyChangedEventArgs<T> change) |
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{ |
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Changes.Add(Clone(change)); |
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base.OnPropertyChanged(change); |
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} |
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private static AvaloniaPropertyChangedEventArgs<T> Clone<T>(AvaloniaPropertyChangedEventArgs<T> change) |
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{ |
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var result = new AvaloniaPropertyChangedEventArgs<T>( |
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change.Sender, |
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change.Property, |
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change.OldValue, |
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change.NewValue, |
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change.Priority); |
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if (!change.IsEffectiveValueChange) |
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{ |
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result.MarkNonEffectiveValue(); |
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} |
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return result; |
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} |
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} |
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} |
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} |
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