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UIComponentTests.cs
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UIComponentTests.cs
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using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using NUnit.Framework;
using UIComponents.Testing;
using UnityEngine;
using UnityEngine.TestTools;
using UnityEngine.UIElements;
namespace UIComponents.Tests
{
[TestFixture]
public partial class UIComponentTests
{
[TestFixture]
public partial class Initialization
{
private class MockAssetResolver : IAssetResolver
{
private readonly Dictionary<string, object> _taskCompletionSources =
new Dictionary<string, object>();
public Task<T> LoadAsset<T>(string assetPath) where T : Object
{
if (!_taskCompletionSources.ContainsKey(assetPath))
{
var source = new TaskCompletionSource<T>();
_taskCompletionSources.Add(assetPath, source);
}
return ((TaskCompletionSource<T>) _taskCompletionSources[assetPath]).Task;
}
public void CompleteLoad<T>(string assetPath) where T : ScriptableObject
{
var source = (TaskCompletionSource<T>) _taskCompletionSources[assetPath];
source.SetResult(ScriptableObject.CreateInstance<T>());
}
public Task<bool> AssetExists(string assetPath)
{
return Task.FromResult(true);
}
}
[Layout("Layout")]
[Stylesheet("Stylesheet1")]
[Stylesheet("Stylesheet2")]
private partial class TestComponent : UIComponent {}
private TestBed<TestComponent> _testComponentTestBed;
private MockAssetResolver _mockAssetResolver;
[SetUp]
public void SetUp()
{
_mockAssetResolver = new MockAssetResolver();
_testComponentTestBed = new TestBed<TestComponent>()
.WithSingleton<IAssetResolver>(_mockAssetResolver);
}
[Test]
public void Sets_The_Initialized_Value()
{
var component = _testComponentTestBed.CreateComponent();
component.Initialize();
Assert.That(component.Initialized, Is.False);
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet1");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet2");
Assert.That(component.Initialized, Is.True);
}
[Test]
public void Completes_Initialization_Task()
{
var component = _testComponentTestBed.CreateComponent();
component.Initialize();
Assert.That(component.InitializationTask.IsCompleted, Is.False);
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet1");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet2");
Assert.That(component.InitializationTask.IsCompleted, Is.True);
Assert.That(component.InitializationTask.Result, Is.SameAs(component));
}
[UnityTest]
public IEnumerator Allows_Waiting_For_Initialization()
{
var component = _testComponentTestBed.CreateComponent();
component.Initialize();
Assert.That(component.Initialized, Is.False);
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet1");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet2");
yield return component.WaitForInitializationEnumerator();
Assert.That(component.Initialized, Is.True);
}
[Layout("Child")]
[Stylesheet("ChildStylesheet")]
private partial class ChildComponent : UIComponent {}
[Layout("NestedChild")]
private partial class NestedChildComponent : UIComponent {}
[Test]
public void Does_Not_Initialize_If_Children_Are_Uninitialized()
{
var component = _testComponentTestBed.CreateComponent();
component.Initialize();
var childTestBed = new TestBed<ChildComponent>()
.WithSingleton<IAssetResolver>(_mockAssetResolver);
var firstChild = childTestBed.CreateComponent();
firstChild.Initialize();
var secondChild = childTestBed.CreateComponent();
secondChild.Initialize();
component.Add(firstChild);
component.Add(secondChild);
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet1");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet2");
Assert.That(component.Initialized, Is.False);
}
[Test]
public void Initializes_When_Children_Are_Initialized()
{
var component = _testComponentTestBed.CreateComponent();
component.Initialize();
var childTestBed = new TestBed<ChildComponent>()
.WithSingleton<IAssetResolver>(_mockAssetResolver);
var firstChild = childTestBed.CreateComponent();
firstChild.Initialize();
var secondChild = childTestBed.CreateComponent();
secondChild.Initialize();
var nestedChildTestBed = new TestBed<NestedChildComponent>()
.WithSingleton<IAssetResolver>(_mockAssetResolver);
var nestedChild = nestedChildTestBed.CreateComponent();
nestedChild.Initialize();
firstChild.Add(nestedChild);
component.Add(firstChild);
component.Add(secondChild);
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet1");
_mockAssetResolver.CompleteLoad<StyleSheet>("Stylesheet2");
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Child");
_mockAssetResolver.CompleteLoad<StyleSheet>("ChildStylesheet");
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("NestedChild");
Assert.That(component.Initialized, Is.True);
}
private partial class BareTestComponent : UIComponent {}
[Test]
public void Bare_Component_Initializes_Synchronously()
{
var component = new BareTestComponent();
component.Initialize();
Assert.That(component.Initialized, Is.True);
}
private partial class BareInitCounterComponent : UIComponent
{
public int InitCount { get; private set; }
public override void OnInit()
{
InitCount++;
}
}
[Test]
public void Synchronous_Initialization_Happens_Once()
{
var component = new BareInitCounterComponent();
component.Initialize();
component.Initialize();
component.Initialize();
Assert.That(component.InitCount, Is.EqualTo(1));
}
[Layout("Layout")]
private partial class InitCounterComponent : BareInitCounterComponent {}
[UnityTest]
public IEnumerator Asynchronous_Initialization_Happens_Once()
{
var testBed = new TestBed<InitCounterComponent>()
.WithSingleton<IAssetResolver>(_mockAssetResolver);
var component = testBed.CreateComponent();
component.Initialize();
component.Initialize();
component.Initialize();
_mockAssetResolver.CompleteLoad<VisualTreeAsset>("Layout");
yield return component.WaitForInitializationEnumerator();
Assert.That(component.InitCount, Is.EqualTo(1));
}
}
}
}