public void testSetEndMillis_long2() {
   MutableInterval test = new MutableInterval(TEST_TIME1, TEST_TIME2);
   try {
     test.setEndMillis(TEST_TIME1 - 1);
     fail();
   } catch (IllegalArgumentException ex) {
   }
 }
 // -----------------------------------------------------------------------
 public void testSetEndMillis_long1() {
   MutableInterval test = new MutableInterval(TEST_TIME1, TEST_TIME2);
   test.setEndMillis(TEST_TIME2 + 1);
   assertEquals(TEST_TIME1, test.getStartMillis());
   assertEquals(TEST_TIME2 + 1, test.getEndMillis());
 }