assertTrue(rangeSet.contains(CrawlerStatus.RUNNING));
        assertFalse(rangeSet.contains(CrawlerStatus.DONE));
    }

    /**
     * Test switch statement usage
     */
    public void test_switchStatement() {
        for (CrawlerStatus status : CrawlerStatus.values()) {
            String description = getStatusDescription(status);
            assertNotNull(description);
            assertFalse(description.isEmpty());