public async void TestAddInvalidGame()
{
//Arrange
var db = MockDb.CreateMockDb();
var c = new GameManagerController(db);
var game = new Game {
Description = "Desc 2", DeveloperId = 1, GenreId = 1, ImageUrl = "", MinimumRequirements = "REQ", Price = 29.99m
};
c.ModelState.AddModelError("Name", "Required");
//Act
var r = await c.Create(game);
//Assert
var result = Assert.IsType <ViewResult>(r);
var model = Assert.IsAssignableFrom <Game>(result.ViewData.Model);
Assert.Equal(game, model);
Assert.IsType <SelectList>(result.ViewData["DeveloperId"]);
Assert.IsType <SelectList>(result.ViewData["GenreId"]);
}