public void TestContains2() { TSet <Frac> tset1 = new TSet <Frac>(); tset1.Add(new Frac(1, 2)); tset1.Add(new Frac(2, 3)); tset1.Add(new Frac(3, 4)); Assert.AreEqual(tset1.Contains(new Frac(2, 30)), false); }