public void TestAddingLetters() { var letterManager = new LetterManager(); var letterA = new Letter('a', 0); letterManager.AddLetter(letterA); var letterB = new Letter('b', 2); letterManager.AddLetter(letterB); letterManager.AddLetter(new Letter('c', 5)); Assert.AreEqual(letterA, letterManager.GetElementAt(0)); Assert.AreEqual(letterB, letterManager.GetElementAt(2)); Assert.AreEqual(new Letter('c', 5), letterManager.GetElementAt(5)); }