@Test public void math() throws SlxException { Map map = new HashMap(); map.put("DateUtils", new DateUtils()); String s = "#set($ceria=\"201109\") \n$DateUtils.getFirstDayofMouth($ceria,\"yyyyMM\",\"yyyyMMdd\")"; String str = Velocity.evaluateAsString(s, map); Assert.assertEquals("20110901", str); }