验证使用起订量的方法调用 [英] Verify a method call using Moq

问题描述

我在C＃相当新的单元测试和学习使用起订量。 。下面是我想测试类

I am fairly new to unit testing in C# and learning to use Moq. Below is the class that I am trying to test.

class MyClass
{
    SomeClass someClass;
    public MyClass(SomeClass someClass)
    {
        this.someClass = someClass;     
    }

    public void MyMethod(string method)
    {
        method = "test"
        someClass.DoSomething(method);
    }   
}

class Someclass
{
    public DoSomething(string method)
    {
        // do something...
    }
}

下面是我的TestClass：

Below is my TestClass:

class MyClassTest
{
    [TestMethod()]
    public void MyMethodTest()
    {
        string action="test";
        Mock<SomeClass> mockSomeClass = new Mock<SomeClass>();
        mockSomeClass.SetUp(a => a.DoSomething(action));
        MyClass myClass = new MyClass(mockSomeClass.Object);
        myClass.MyMethod(action);
        mockSomeClass.Verify(v => v.DoSomething(It.IsAny<string>()));
    }
}

我得到了以下异常：

I get the following exception:

Expected invocation on the mock at least once, but was never performed
No setups configured.
No invocations performed..

我只是想验证该方法的MyMethod是被称为与否。我缺少的东西吗？

I just want to verify if the method "MyMethod" is being called or not. Am I missing something?

在此先感谢！

推荐答案

您'重新检查错误的方法。 。起订量要求您设置（然后有选择地验证）在依赖类中的方法

You're checking the wrong method. Moq requires that you Setup (and then optionally Verify) the method in the dependency class.

您应该做更多的东西是这样的：

You should be doing something more like this:

class MyClassTest
{
    [TestMethod]
    public void MyMethodTest()
    {
        string action = "test";
        Mock<SomeClass> mockSomeClass = new Mock<SomeClass>();

        mockSomeClass.Setup(mock => mock.DoSomething());

        MyClass myClass = new MyClass(mockSomeClass.Object);
        myClass.MyMethod(action);

        // Explicitly verify each expectation...
        mockSomeClass.Verify(mock => mock.DoSomething(), Times.Once());

        // ...or verify everything.
        // mockSomeClass.VerifyAll();
    }
}

在换句话说，你是验证调用 MyClass的＃的MyMethod ，类肯定会在这个过程中调用 SomeClass的＃的DoSomething 一次。请注意，您不需要时间参数;我只是展示了其价值。

In other words, you are verifying that calling MyClass#MyMethod, your class will definitely call SomeClass#DoSomething once in that process. Note that you don't need the Times argument; I was just demonstrating its value.

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