Mock HttpContext in TDD的几种简单应用

1）First case for an sample user:

    public class MockHttpContext : HttpContextBase
    {
        private readonly IPrincipal _user = new GenericPrincipal(
                 new GenericIdentity("username"), null /* roles */);

        public override IPrincipal User
        {
            get
            {
                return _user;
            }
            set
            {
                base.User = value;
            }
        }

        public MockHttpContext(string UserName)
        {
            _user = new GenericPrincipal(new GenericIdentity(UserName), null);
        }
    }

 上面测试简单模拟了一个已经登录的带某用户名的用户的上下文;

2)two function  for quick switch login state

        protected void LoginOut()
        {
            httpMock.Setup(h => h.User.Identity.IsAuthenticated).Returns(false);
            DefaultHttpContext = httpMock.Object;
            BaseController.ControllerContext = new ControllerContext()
                                                   {
                                                       Controller = BaseController,
                                                       RequestContext =
                                                           new RequestContext(DefaultHttpContext, new RouteData())
                                                   };
            BaseController.SetCurrentUser(loginName);
        }
        protected void LoginIn()
        {
            httpMock.Setup(h => h.User.Identity.IsAuthenticated).Returns(true);
            DefaultHttpContext = httpMock.Object;
            BaseController.ControllerContext = new ControllerContext()
            {
                Controller = BaseController,
                RequestContext =
                    new RequestContext(DefaultHttpContext, new RouteData())
            };
            BaseController.SetCurrentUser(loginName);
        }