模拟服务中的方法进行单元测试

Question

I am working on a unit test, that is how I mock:

  mockProxy.Setup(s => s.GetPayment(getPaymentRequest)).ReturnsAsync(getPaymentResponse);
  var sut = new FromService.Service(mockProxy.Object, mockTemplateService.Object, mockAppSettings, mockAgentRepository.Object);
        // Act
        var getBrandingResponse = await sut.GetDeliver(request);

this is my GetDeliver method in service:

 public async Task<GetDeliverResponse> GetDeliver(GetDeliverRequest request)
    {
        byte[] content = null;
        var request = new FromProxy.GetPaymentRequest()
        {
            .....
        };

        var myresponse = await proxy.GetPayment(request);

My problem is that although I have mocked the GetPatment method and when I debug request has value but myresponse is null, that is why the test is breaking where ever after that use the myresponse. How I can mock so myresponse bring some value?

Answer 1

To get your mock to trigger in the code being tested, replace getPaymentRequest in the setup with It.IsAny<PaymentRequest>()
(Assuming your request class is called PaymentRequest , if not, replace PaymentRequest with the actual class name.)

Where you are saying
mockProxy.Setup(s => s.GetPayment(getPaymentRequest)).ReturnsAsync(getPaymentResponse); the getPaymentRequest is a reference to a specific instance of the PaymentRequest class, but that instance is not the one that will be passed to your mock at runtime, the result of new FromProxy.GetPaymentRequest() is what will get passed. You want to use code that maps to anything of that class, not just the one instance you are currently mapping to.