// Create EnumSet with range
        EnumSet<CrawlerStatus> rangeSet = EnumSet.range(CrawlerStatus.INITIALIZING, CrawlerStatus.RUNNING);
        assertEquals(2, rangeSet.size());
        assertTrue(rangeSet.contains(CrawlerStatus.INITIALIZING));
        assertTrue(rangeSet.contains(CrawlerStatus.RUNNING));
        assertFalse(rangeSet.contains(CrawlerStatus.DONE));
    }

    /**
     * Test switch statement usage