public void testToZulu(){ String base = "2011-02-04T16:13:14.000"; String zulu = base + "Z"; String utc0 = base + "+00:00"; String utc1 = "2011-02-04T17:13:14" + "+01:00"; String utcMinus1 = "2011-02-04T15:13:14" + "-01:00"; assertEquals(zulu, ISO8601DateFormat.formatToZulu(zulu)); assertEquals(zulu, ISO8601DateFormat.formatToZulu(utc1)); assertEquals(zulu, ISO8601DateFormat.formatToZulu(utc0)); assertEquals(zulu, ISO8601DateFormat.formatToZulu(utcMinus1)); }