public void AddOrderTest()
{
_model.GetCategoryControl().InitializeCategoryList();
_model.InitializeMealList();
Meal meal = _model.GetMealControl().GetMealByTitle("可口可樂");
_model.AddOrder(meal);
_model.AddOrder(meal);
Meal newMeal = new Meal();
newMeal.SetValue("沙士", "25", "", "/image/Beverage Syrup Coca Cola_L_hero.png");
Category category = new Category();
category.Name = "飲料";
newMeal.SetCategory(category);
_model.AddOrder(newMeal);
}