assertNotNull(job);
        assertEquals(30L * 24 * 60 * 60 * 1000L, job.getExpiry());
    }

    // Test getExpiry with default value
    public void test_getExpiry_default() {
        assertEquals(30L * 24 * 60 * 60 * 1000L, purgeThumbnailJob.getExpiry());
    }

    // Test expiry setter with valid value
    public void test_expiry_validValue() {