@Test
public void testTuple3() {

  Tuple3<String, Integer, Integer> tuple = Tuples.tuple("12", 1, 2);
  assertEquals("(12, 1, 2)", tuple.toString());
  assertEquals("12", tuple.a);
  assertEquals(1, tuple.b.intValue());
  assertEquals(2, tuple.c.intValue());
  ObjectTester.assertEqual(tuple, tuple, Tuples.tuple("12", 1, 2));
  ObjectTester.assertNotEqual(tuple,
      Tuples.tuple("21", 1, 2), Tuples.tuple("12", 2, 2), Tuples.tuple("12", 1, 1), "abc");
}