验证使用Moq调用的泛型方法

Question

我无法验证模拟IInterface.SomeMethod<T>(T arg)被称为使用Moq.Mock.Verify.

我可以验证方法是在"标准"接口上调用使用It.IsAny<IGenericInterface>()或It.IsAny<ConcreteImplementationOfIGenericInterface>(),并且我没有麻烦验证使用泛型方法调用It.IsAny<ConcreteImplementationOfIGenericInterface>(),但我无法验证使用泛型方法调用It.IsAny<IGenericInterface>()- 它总是说该方法没有被调用,单元测试失败.

这是我的单元测试:

public void TestMethod1()
{
    var mockInterface = new Mock<IServiceInterface>();

    var classUnderTest = new ClassUnderTest(mockInterface.Object);

    classUnderTest.Run();

    // next three lines are fine and pass the unit tests
    mockInterface.Verify(serviceInterface => serviceInterface.NotGenericMethod(It.IsAny<ConcreteSpecificCommand>()), Times.Once());
    mockInterface.Verify(serviceInterface => serviceInterface.NotGenericMethod(It.IsAny<ISpecificCommand>()), Times.Once());
    mockInterface.Verify(serviceInterface => serviceInterface.GenericMethod(It.IsAny<ConcreteSpecificCommand>()), Times.Once());

    // this line breaks: "Expected invocation on the mock once, but was 0 times"
    mockInterface.Verify(serviceInterface => serviceInterface.GenericMethod(It.IsAny<ISpecificCommand>()), Times.Once());
}

这是我的课程:

public class ClassUnderTest
{
    private IServiceInterface _service;

    public ClassUnderTest(IServiceInterface service)
    {
        _service = service;
    }

    public void Run()
    {
        var command = new ConcreteSpecificCommand();
        _service.GenericMethod(command);
        _service.NotGenericMethod(command);
    }
}

这是我的IServiceInterface:

public interface IServiceInterface
{
    void NotGenericMethod(ISpecificCommand command);
    void GenericMethod<T>(T command);
}

这是我的接口/类继承层次结构:

public interface ISpecificCommand
{
}

public class ConcreteSpecificCommand : ISpecificCommand
{
}

Answer 1

这是Moq 4.0.10827中的已知问题,它是当前版本.请参阅GitHub上的讨论https://github.com/Moq/moq4/pull/25.我已经下载了它的dev分支,编译并引用它,现在你的测试通过了.