使用依赖注入为接口创建测试类

Question

您好，我有如下代码并使用 xUnit。我想编写 TestClass 来测试我的界面。你能告诉我怎么做吗:

通过 DependencyInjection 注入不同的服务来测试 class 并运行测试此服务。
准备要使用 Autofixture 和 AutoMoq 注入的对象。在注入之前，我想创建像

我想做这样的事情:

public ServiceTestClass
{
    private ISampleService sut;
    public ServiceTestClass(ISampleService service) {
        this.sut = service;
    }

    [Fact]
    public MyTestMetod() {
        // arrange
        var fixture = new Fixture();

        // act
        sut.MakeOrder();  

        // assert
        Assert(somethink);
    }
}


public class SampleService : ISampleService // ande few services which implements ISampleService
{
    // ISampleUow also include few IRepository
    private readonly ISampleUow uow;
    public SampleService(ISampleUow uow) {
        this.uow = uow;
    }

    public void  MakeOrder() {
        //implementation which use uow
    }
}

Answer 1

你问的不是特别清楚，但是AutoFixture可以作为Auto-mocking Container. The AutoMoq Glue Library is one of many extensions that enable AutoFixture to do that. Others are AutoNSubstitute, AutoFakeItEasy等

这使您能够像这样编写测试：

[Fact]
public void MyTest()
{
    var fixture = new Fixture().Customize(new AutoMoqCustomization());
    var mock = fixture.Freeze<Mock<ISampleUow>>();
    var sut = fixture.Create<SampleService>();

    sut.MakeOrder();

    mock.Verify(uow => /* assertion expression goes here */);
}

如果你把它和AutoFixture.Xunit2 Glue Library结合起来，你可以把它压缩成这样：

[Theory, MyAutoData]
public void MyTest([Frozen]Mock<ISampleUow> mock, SampleService sut)
{
    var sut = fixture.Create<SampleService>();    
    sut.MakeOrder();    
    mock.Verify(uow => /* assertion expression goes here */);
}

使用依赖注入为接口创建测试类

Create TestClass for Interface with Dependency Injection

c#

dependency-injection

xunit

autofixture