public void DeleteMeal()
{
MealPrice toDelete = ctx.MealPriceSet.FirstOrDefault(p => p.PriceHT == 15M);
repo.Delete(toDelete);
repo.Save();
Assert.IsNull(ctx.MealPriceSet.FirstOrDefault(p => p.PriceHT == 15M));
Assert.IsNotNull(ctx.PeopleCategorySet.FirstOrDefault(p => p.Label == "Adultes"));
Assert.IsNotNull(ctx.MealSet.FirstOrDefault(p => p.Title == "Meal1"));
}
