assertSame(crawlJob, result);
    }

    // Test documentExpires setter
    @Test
    public void test_documentExpires() {
        int testExpires = 30;
        CrawlJob result = crawlJob.documentExpires(testExpires);
        assertEquals(testExpires, crawlJob.documentExpires);
        assertSame(crawlJob, result);

        // Test with negative value
        result = crawlJob.documentExpires(-1);