验证使用Moq调用的通用方法 [英] Verifying generic method called using Moq

问题描述

我无法验证是否使用Moq.Mock.Verify调用了IInterface.SomeMethod<T>(T arg)的模拟程序.

I'm having trouble verifying that mock of IInterface.SomeMethod<T>(T arg) was called using Moq.Mock.Verify.

我可以使用It.IsAny<IGenericInterface>()或It.IsAny<ConcreteImplementationOfIGenericInterface>()验证是否在标准"接口上调用了该方法，并且可以使用It.IsAny<ConcreteImplementationOfIGenericInterface>()验证通用方法调用没有任何麻烦，但是我无法验证通用方法是使用It.IsAny<IGenericInterface>()调用的-它始终表示未调用该方法，并且单元测试失败.

I'm can verify that method was called on a "Standard" interface either using It.IsAny<IGenericInterface>() or It.IsAny<ConcreteImplementationOfIGenericInterface>(), and I have no troubles verifying a generic method call using It.IsAny<ConcreteImplementationOfIGenericInterface>(), but I can't verify a generic method was called using It.IsAny<IGenericInterface>() - it always says that the method was not called and the unit test fails.

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());
}

这是我的课程正在测试:

Here is my class under test:

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:

And here is my interface/class inheritance hierarchy:

public interface ISpecificCommand
{
}

public class ConcreteSpecificCommand : ISpecificCommand
{
}

推荐答案

这是Moq 4.0.10827(当前版本)中的一个已知问题.在GitHub https://github.com/Moq/moq4/pull/25.我已经下载了它的dev分支，对其进行了编译和引用，现在您的测试通过了.

It is a known issue in the Moq 4.0.10827 which is a current release version. See this discussion at GitHub https://github.com/Moq/moq4/pull/25. I have downloaded its dev branch, compiled and referenced it and now your test passes.

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