assertEquals("931.3G", FessFunctions.formatFileSize(1000000000000L));
        assertEquals("909.5T", FessFunctions.formatFileSize(1000000000000000L));
    }

    @Test
    public void test_parseDate() {
        Date date;

        date = FessFunctions.parseDate("");
        assertNull(date);

        date = FessFunctions.parseDate("2004-04-01T12:34:56.123Z");