Unity Unit Test（単体テスト）入門 - 番外編 UniRx

目次

はじめに

• この一連の記事は
  • UnityのUnity Test Frameworkを使ったテストに関して調べたメモ書きに補足を足したもの
  • Unityのテスト、およびDIコンテナ、モックライブラリの基本的な使い方やそれぞれの役割など入門レベルの解説
  • ライブラリのリファレンス的な使い方などについては公式や他の記事参照
  • 実機テストやCIは含まない
  • TDDに関しては考慮しない

シリーズの目次

• Unity Unit Test（単体テスト）入門
• Unity Unit Test（単体テスト）入門 - Unity Test Framework
• Unity Unit Test（単体テスト）入門 - Extenject(Zenject)
• Unity Unit Test（単体テスト）入門 - VContainer
• Unity Unit Test（単体テスト）入門 - Moq
• Unity Unit Test（単体テスト）入門 - NSubstitute
• Unity Unit Test（単体テスト）入門 - 番外編 UniRx（この記事）

環境

• Unity 2021.3.29f1
• Package
  • Test Framework 1.3.8
    • com.unity.test-framework / 1.3.8
  • Extenject 9.2.0
    • Extenject Dependency Injection IOC | Utilities Tools | Unity Asset Store
  • VContainer 1.13.2
    • https://github.com/hadashiA/VContainer.git?path=VContainer/Assets/VContainer#1.13.2
  • Moq
    • 4.7.99 (Extenject内蔵)
    • 4.20.69 (NuGet)
      • NuGet Gallery | Moq 4.20.69
      • NuGet Gallery | Castle.Core 5.1.1
      • NuGet Gallery | System.Diagnostics.EventLog 7.0.0
  • NSubstitute
    • v2.0.3.0 for .Net v4.5 (Extenject内蔵)
    • 5.0.0 (NuGet)
      • NuGet Gallery | NSubstitute 5.0.0
      • NuGet Gallery | Castle.Core 5.1.1
      • NuGet Gallery | System.Diagnostics.EventLog 7.0.0
  • https://github.com/neuecc/UniRx.git?path=Assets/Plugins/UniRx/Scripts
  • https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask

サンプル

public interface IUniRxSample
{
    IReadOnlyReactiveProperty<int> OnReactiveProperty { get; }
    IObservable<int> OnSubject { get; }
}

Moq

[Test]
public void UniRxMoqTest()
{
    var reactiveDummy = new ReactiveProperty<int>();
    var subjectDummy = new Subject<int>();

    var mock = new Mock<IUniRxSample>();
    mock.Setup(x => x.OnSubject).Returns(subjectDummy);
    mock.Setup(x => x.OnReactiveProperty).Returns(reactiveDummy);

    mock.Object.OnSubject.Subscribe(x => Assert.That(x, Is.EqualTo(1)));

    subjectDummy.OnNext(1);

    var results = new List<int>();
    mock.Object.OnReactiveProperty.Subscribe(x => results.Add(x));

    reactiveDummy.Value = 2;
    
    Assert.That(results.Count, Is.EqualTo(2));
    Assert.That(results[0], Is.EqualTo(0));
    Assert.That(results[1], Is.EqualTo(2));
}

NSubstitute

[Test]
public void UniRxNSubstituteTest()
{
    var reactiveDummy = new ReactiveProperty<int>();
    var subjectDummy = new Subject<int>();

    var mock = Substitute.For<IUniRxSample>();
    mock.OnSubject.Returns(subjectDummy);
    mock.OnReactiveProperty.Returns(reactiveDummy);

    mock.OnSubject.Subscribe(x => Assert.That(x, Is.EqualTo(1)));

    subjectDummy.OnNext(1);

    var results = new List<int>();
    mock.OnReactiveProperty.Subscribe(x => results.Add(x));

    reactiveDummy.Value = 2;

    Assert.That(results.Count, Is.EqualTo(2));
    Assert.That(results[0], Is.EqualTo(0));
    Assert.That(results[1], Is.EqualTo(2));
}