public void LogOn_Post_ReturnsViewIfModelStateIsInvalid()
{
// Arrange
AccountController controller = GetAccountController();
LogOnModel model = new LogOnModel()
{
UserName = "someUser",
Password = "goodPassword",
RememberMe = false
};
controller.ModelState.AddModelError("", "Dummy error message.");
// Act
ActionResult result = controller.LogOn(model, null);
// Assert
Assert.IsInstanceOfType(result, typeof(ViewResult));
ViewResult viewResult = (ViewResult)result;
Assert.AreEqual(model, viewResult.ViewData.Model);
}