@Test
public void testGetPrettyInterval()
{

    Date start = new DateTime( 2014, 5, 18, 15, 10, 5, 12 ).toDate();
    Date end = new DateTime( 2014, 5, 19, 11, 45, 42, 56 ).toDate();
    String interval = DateUtils.getPrettyInterval( start, end );
    assertNotNull( interval );
}