C# MVC、MOQ单元测试webapi方法

我一直遵循使用MOQ对webapi方法进行单元测试的常规模式。这次我有一个控制器方法，它有点不同，我不知道为什么测试失败

这是我们其中一种方法的标准外观。我们调用存储库并返回OK

API方法

    [HttpPost]
    public IHttpActionResult SampleMethod(SampleModel model)
    {
        var result= _myRepository.SampleMethod(model.Field1, model.Field2);

        return Ok();
    }

    [HttpPost]
    public IHttpActionResult SampleMethod(SampleModel model)
    {
        var emailItem= _myRepository.SampleMethod(model.Field1, model.Field2);

        //With this additional code, the test will fail
        EmailSender emailSender = new EmailSender();
        emailSender.BuildEmail(emailItem.ToAddress, emailItem.Subject);

        return Ok();
    }

我通常使用以下测试来进行类似的测试

单元测试

    /// <summary>
    /// Tests the SampleMethod is run
    /// </summary>
    [TestMethod]
    public void SampleMethod_Is_Run()
    {
        //Arrange
        mockRepository
          .Setup(x => x.SampleMethod(It.IsAny<string>(), It.IsAny<string>()))
          .Returns(It.IsAny<EmailItem>());  //forgot to add this the first time
        var controller = new MyController(mockRepository.Object);

        //Act
        controller.SampleMethod(It.IsAny<string>(), It.IsAny<string>());

        //Assert
        mockRepository.VerifyAll();
    }

    /// <summary>
    /// Tests the SampleMethod returns correct status code
    /// </summary>
    [TestMethod]
    public void SampleMethod_Returns_OK()
    {
        //Arrange
        mockRepository
          .Setup(x => x.SampleMethod(It.IsAny<string>(), It.IsAny<string>()))
          .Returns(It.IsAny<EmailItem>());  //forgot to add this the first time;
        var controller = new MyController(mockRepository.Object);
        controller.Request = new HttpRequestMessage();
        controller.Configuration = new HttpConfiguration();

        //Act
        var response = controller.SampleMethod(It.IsAny<string>(), It.IsAny<string>());

        //Assert
        Assert.IsInstanceOfType(response, typeof(OkResult));
    }

我得到的测试失败的错误消息是这样的，但是没有地方可以看到额外的异常信息

    "System.Web.Http.HttpResponseException: Processing of the HTTP request resulted in an exception.  Please see the HTTP response returned by 'Response' property of this exception for details."

---

您确实设置了存储库，但不返回任何内容

mockRepository
      .Setup(x => x.SampleMethod(It.IsAny<string>(), It.IsAny<string>()));

---

您没有设置它，因此，

emailSender

为空。

实际上，我在示例中没有返回电子邮件项目，而是将其作为it.IsAny（）返回。你创建了一个新项目，这就是它所做的。谢谢

 mockRepository
      .Setup(x => x.SampleMethod(It.IsAny<string>(), It.IsAny<string>())).Returns(new EmailItem{ToAddress = "", Subject = ""});

emailSender.BuildEmail(emailItem.ToAddress, emailItem.Subject);