public void TestRemoveItem()
{
var ratings = new StaticRatings(7);
ratings.Add(1, 4, 0.3f);
ratings.Add(1, 8, 0.2f);
ratings.Add(2, 4, 0.2f);
ratings.Add(2, 2, 0.6f);
ratings.Add(2, 5, 0.4f);
ratings.Add(3, 4, 0.2f);
ratings.Add(3, 3, 0.3f);
Assert.AreEqual(7, ratings.Count);
ratings.RemoveItem(4);
}