} catch (FessSystemException e) {
            assertEquals("Invalid hour value: -1 in time: -1:30. Hour must be between 0 and 23", e.getMessage());
        }
    }

    @Test
    public void test_intervalRule_getDelay() {
        IntervalRule rule = new IntervalRule("10:00", "18:00", "*", 5000);
        assertEquals(5000, rule.getDelay());

        rule = new IntervalRule("10:00", "18:00", "*", 0);