public async Task Login_GivenModelStateInvalid_ReturnLoginView()
{
_controller.ModelState.AddModelError("Test", "Test");
var result = await _controller.Login(Mock.Of <LoginViewModel>()) as ViewResult;
Assert.Equal("Login", result.ViewName, ignoreCase: true);
}
public async Task Login_GivenModelStateInvalid_ReturnLoginView()
{
_controller.ModelState.AddModelError("Test", "Test"); //这里直接认定有错误，
var result = await _controller.Login(Mock.Of <LoginViewModel>()) as ViewResult; //Mock.Of<LoginViewModel>()会帮我们创建一个LoginViewModel的实例，类似new。as对引用类型进行转换，无法转换时返回null而非抛出异常
Assert.Equal("Login", result.ViewName, ignoreCase: true);
}
public async Task Login_ModelStateInvalid_ReturnModelView()
{
//to check modelstate is valid, add some error mo the modelstate
_controller.ModelState.AddModelError("Test", "Test");
//v1
//var model = new Mock<LoginViewModel>();
//var result = _controller.Login(model.Object);
//v2
var result = await _controller.Login(Mock.Of <LoginViewModel>()) as ViewResult;
Assert.Equal("Login", result.ViewName, ignoreCase: true);
}
