*/
    @Test
    public void testToDate_LongStyle() throws Exception {
        final Date date = toDate("11:49:10 JST");
        final SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");
        df.setTimeZone(TimeZone.getTimeZone("JST"));
        assertThat(df.format(date), is("11:49:10"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testToDate_FullStyle() throws Exception {

    //        final Date date = toDate("2010/09/07 11:49:10 JST", Locale.JAPAN);
    //        final SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
    //        df.setTimeZone(TimeZone.getTimeZone("JST"));
    //        assertThat(df.format(date), is("2010/09/07 11:49:10"));
    //    }

    /**
     * @throws Exception
     */
    //    @Test

            return Long.toString(date.getTime());
        } else if (format.contains("date_optional_time")) {
            final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
            return sdf.format(date);
        } else {
            return Long.toString(date.getTime());
        }
    }

        if (date == null) {
            return StringUtil.EMPTY;
        }
        final SimpleDateFormat sdf = new SimpleDateFormat(Constants.ISO_DATETIME_FORMAT);
        sdf.setTimeZone(Constants.TIMEZONE_UTC);
        return sdf.format(date);
    }

    /**
     * Formats a LocalDateTime object to ISO datetime string format.
     *
     * @param date the LocalDateTime to format

            return Long.toString(date.getTime());
        } else if (format.contains("date_optional_time")) {
            final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
            return sdf.format(date);
        } else {
            return Long.toString(date.getTime());
        }
    }

            return Long.toString(date.getTime());
        } else if (format.contains("date_optional_time")) {
            final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
            sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
            return sdf.format(date);
        } else {
            return Long.toString(date.getTime());
        }
    }