public void Register_Post_ReturnsViewIfModelStateIsInvalid()
{
// Arrange
AccountController controller = GetAccountController();
RegisterModel model = new RegisterModel()
{
UserName = "someUser",
Email = "goodEmail",
Password = "goodPassword",
ConfirmPassword = "goodPassword"
};
controller.ModelState.AddModelError("", "Dummy error message.");
// Act
ActionResult result = controller.Register(model);
// Assert
Assert.IsInstanceOfType(result, typeof(ViewResult));
ViewResult viewResult = (ViewResult)result;
Assert.AreEqual(model, viewResult.ViewData.Model);
Assert.AreEqual(10, viewResult.ViewData["PasswordLength"]);
}