使用起订量来接受非灵长类动物的参数测试方法 [英] Using Moq to test methods that accept non-primative arguments

问题描述

我试图写一个ASP.Net MVC控制器操作的测试。

I'm trying to write a test for an ASP.Net MVC controller action.

我想测试该动作调用上注入服务的特定方法，所以我嘲讽的服务和使用.Verify。

I'd like to test that the action invokes a particular method on an injected service, so I'm mocking the service and using .Verify.

因此​​，在简单的情况下，我在我的控制器中的下列行动：

So in the simple case, I have the following action in my controller:

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Create(string title)
    {
        _cmsService.AddPage(title);

        return View("Edit");
    }

使用服务接口...

using the service interface...

public interface ICmsService
{
    void AddPage(string request);
}

和以下测试...

        //Arrange
        const string pageTitle = "Test Page";

        var cmsService = new Mock<ICmsService>();

        cmsService.Setup(service => service.AddPage(pageTitle));

        var controller = new PageController(cmsService.Object);

        //Act
        var result = controller.Create(pageTitle) as ViewResult;

        //Assert
        cmsService.Verify(service => service.AddPage(pageTitle), Times.Once());

现在我想修改我的服务操作使用request和response对象...

Now I want to refactor my service operation to use request and response objects...

public interface ICmsService
{
    CmsServiceAddPageResponse AddPage(CmsServiceAddPageRequest request);
}

所以我相应地改变我的行动...

So I change my action accordingly...

    public ActionResult Create(string title)
    {
        var request = new CmsServiceAddPageRequest()
                          {
                              PageName = title
                          };

        var response = _cmsService.AddPage(request);

        return View("Edit");
    }

也是我的测试...

and also my test...

        //Arrange
        const string pageTitle = "Test Page";

        var cmsService = new Mock<ICmsService>();

        var request = new CmsServiceAddPageRequest() {PageName = pageTitle};

        cmsService.Setup(service => service.AddPage(request));

        var controller = new PageController(cmsService.Object);

        //Act
        var result = controller.Create(pageTitle) as ViewResult;

        //Assert
        cmsService.Verify(service => service.AddPage(request), Times.Once());

但现在当我运行测试，我得到以下信息...

But now when I run the test, I get the following message...

TestCase 'Web.Test.PageControllerTest.CreateNewPagePost'
failed: Moq.MockException : 
Invocation was performed more than once on the mock: service => service.AddPage(value(Web.Test.PageControllerTest+<>c__DisplayClass1).request)
    at Moq.Mock.ThrowVerifyException(IProxyCall expected, Expression expression, Times times)
    at Moq.Mock.VerifyCalls(Interceptor targetInterceptor, MethodCall expected, Expression expression, Times times)
    at Moq.Mock.Verify[T,TResult](Mock mock, Expression`1 expression, Times times, String failMessage)
    at Moq.Mock`1.Verify[TResult](Expression`1 expression, Times times)
    PageControllerTest.cs(67,0): at Web.Test.PageControllerTest.CreateNewPagePost()

我应该怎么做来测试接受非原始类型的方法？

What should I be doing to test a method that accepts a non-primitive type?

感谢

沙地

推荐答案

我觉得第一个答案一个更好的选择将是实现一个自定义的匹配，而不是改变code，以配合您的测试框架。来源： HTTP：//$c$c.google.com/p/moq /维基/快速入门

I think a better alternative to the first answer would be to implement a custom matcher rather than change code to match your testing framework. From:http://code.google.com/p/moq/wiki/QuickStart

// custom matchers
mock.Setup(foo => foo.Submit(IsLarge())).Throws<ArgumentException>();
...
public string IsLarge() 
{ 
  return Match<string>.Create(s => !String.IsNullOrEmpty(s) && s.Length > 100);
}

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