@Test
public void testInsert()
{

    GHTreeMapComposed instance = new GHTreeMapComposed();
    instance.insert(1, 100);
    assertEquals(1, instance.peekKey());
    assertEquals(100, instance.peekValue());
    instance.insert(2, 99);
    instance.insert(3, 101);
    assertEquals(2, instance.peekKey());
    assertEquals(99, instance.peekValue());
    assertEquals(2, instance.pollKey());
}