我是新来的mvc4和TDD.
当我尝试运行此测试失败,我不知道为什么.我尝试了很多事情,我开始在圈子里跑来跑去.
// GET api/User/5
[HttpGet]
public HttpResponseMessage GetUserById (int id)
{
var user = db.Users.Find(id);
if (user == null)
{
//return Request.CreateResponse(HttpStatusCode.NotFound);
throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotFound));
}
return Request.CreateResponse(HttpStatusCode.OK,user);
}
[TestMethod]
public void GetUserById()
{
//Arrange
UserController ctrl = new UserController();
//Act
var result = ctrl.GetUserById(1337);
//Assert
Assert.IsNotNull(result);
Assert.AreEqual(HttpStatusCode.NotFound,result.StatusCode);
}
结果：
Test method Project.Tests.Controllers.UserControllerTest.GetUserById threw exception: System.ArgumentNullException: Value cannot be null. Parameter name: request
解决方法
您测试失败,因为您在ApiController中使用的Request属性未初始化.如果您打算使用它,请确保初始化它：
//Arrange
var config = new HttpConfiguration();
var request = new HttpRequestMessage(HttpMethod.Post,"http://localhost/api/user/1337");
var route = config.Routes.MapHttpRoute("Default","api/{controller}/{id}");
var controller = new UserController
{
Request = request,};
controller.Request.Properties[HttpPropertyKeys.HttpConfigurationKey] = config;
//Act
var result = controller.GetUserById(1337);
