public void ReviewListExistsTest()
{
var ratingList = new ReviewList();
ratingList.Add(new Review(1, "Name1", "Description1", 2));
ratingList.Add(new Review(2, "Name2", "Description2", 3));
ratingList.Add(new Review(3, "Name3", "Description3", 4));
Assert.IsFalse(ratingList.Exists(0));
Assert.IsFalse(ratingList.Exists(-1));
Assert.AreEqual(ratingList.Exists(1), true);
Assert.AreEqual(ratingList.Exists(2), true);
Assert.AreEqual(ratingList.Exists(3), true);
}