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Web Api单元测试写法

例如我们在Web Api项目中有个Controller

public class SomeController : ApiController{public HttpResponseMessage Get(){// 一些操作return Request.CreateResponse(HttpStatusCode.OK, someModel);}}

  


  如果你在单元测试中直接调用 SomeController 的Get()方法,那么你将会收到一个Exception提示Request为Null。
  因此我们需要在测试代码中构造一个Request,有两种方法
  1、简单构造法

[TestMethod]public void UnitTestMethod(){// 环境准备部分YourNameSpace.Controllers.SomeController controller = new SomeController();// 下面两个语句是构造一个简单的请求报文controller.Request = new HttpRequestMessage();controller.Request.SetConfiguration(new HttpConfiguration());var result = controller.Get();// 断言}

  


  2、可控性更强的构造

[TestMethod]public void UnitTestMethod(){// 环境准备部分YourNameSpace.Controllers.SomeController controller = new SomeController();var config = new HttpConfiguration();var request = new HttpRequestMessage(HttpMethod.Post, "YourUrl");var route = config.Routes.MapHttpRoute("DefaultApi", "api/{controller}/{id}");var routeData = http://www.mamicode.com/new HttpRouteData(route, new HttpRouteValueDictionary { {"controller", "products" } });controller.ControllerContext = new HttpControllerContext(config, routeData, request);controller.Request = request;controller.Request.Properties[HttpPropertyKeys.HttpConfigurationKey] = config;var result = controller.Get();// 断言}

  


  然后就可以运行单元测试查看结果了。