public void Print_InsertThreeElements_CorrectPrint() { var comparer = new StringComparator(); var map = new RbTree <string, int>(comparer); map.Insert("tt", 145); map.Insert("bb", 323); map.Insert("gg", 476); var actualOutput = map.ToString(); var expectedOutput = "key = bb value = 323\nkey = gg value = 476\nkey = tt value = 145\n"; Assert.AreEqual(expectedOutput, actualOutput); }