public async Task Create_GivenModelStateInvalid_ReturnToView()
{
_controller.ModelState.AddModelError("Test", "Test");
var result = await _controller.Create(Mock.Of <LoginViewModel>());
Assert.IsType <ViewResult>(result);
Assert.True(_controller.ModelState.ErrorCount > 0);
Assert.True(_controller.ModelState.ContainsKey("Test"));
Assert.Equal("Test", _controller.ModelState["Test"].Errors[0].ErrorMessage);
Assert.True(_controller.ModelState.ContainsKey(""));
Assert.Equal("Invalid user details", _controller.ModelState[""].Errors[0].ErrorMessage);
}
