public void testTuple() // this test passes
{
MyTuple <int> intTuple1 = new MyTuple <int>(1, 2);
MyTuple <int> intTuple2 = new MyTuple <int>(1, 2);
MyTuple <string> stringTuple = new MyTuple <string>("first", "second");
Assert.AreNotEqual(intTuple1.GetType(), stringTuple.GetType());
Assert.AreEqual(intTuple1.GetType(), intTuple2.GetType());
}