@Test
  public void testClear() {
    MyTreeSet test = new MyTreeSet();
    test.add(1);
    test.add(2);
    test.add(3);
    test.add(4);
    // Size should be 4
    System.out.println(test.size());

    test.clear();

    // Size should be 0
    System.out.println(test.size());
  }
 @Ignore
 public void testSize() {
   MyTreeSet test = new MyTreeSet();
   test.add(1);
   test.add(2);
   test.add(3);
   test.add(1);
   // Size should be 3.
   System.out.println(test.size());
 }
  @Ignore
  public void testAddT() {
    MyTreeSet test = new MyTreeSet();
    test.add(1);
    test.add(2);
    test.add(3);
    test.add(1);

    System.out.println(test.size());
  }