ExecutorService service = mock(ExecutorService.class);
    application.addDelayedShutdownHook(service, 2, SECONDS);
    verify(service, Mockito.never()).shutdown();
    application.shutdown();
    InOrder shutdownFirst = Mockito.inOrder(service);
    shutdownFirst.verify(service).shutdown();
    shutdownFirst.verify(service).awaitTermination(2, SECONDS);
  }

        crawlerThread.run();

        verify(urlQueueService, times(1)).poll(anyString());
    }

    /**
     * Test run method with crawler status DONE.
     */
    public void test_run_statusDone() throws Exception {
        crawlerContext.setStatus(CrawlerStatus.DONE);

        crawlerThread.run();

        verify(urlQueueService, times(0)).poll(anyString());
    }

    /**

        // Execute - should not throw any exception
        processor.process(responseData);

        // Verify child URLs are unchanged
        assertEquals(2, responseData.getChildUrlSet().size());
    }

    public void test_noOpBehavior() {
        // Verify that NullResponseProcessor truly does nothing
        NullResponseProcessor processor = new NullResponseProcessor();

        }

        // Execute and verify
        try {
            processor.process(responseData);
            fail("Should throw ChildUrlsException");
        } catch (ChildUrlsException e) {
            Set<RequestData> childUrls = e.getChildUrlList();
            assertNotNull(childUrls);
            assertEquals(3, childUrls.size());

            // Verify all URLs are present

        // Verify
        assertEquals(3, includePatterns.size());
        assertEquals(3, excludePatterns.size());

        // Verify all calls were made
        verify(dataHelper).addIncludeUrlPattern(sessionId, "https://example.com/.*");
        verify(dataHelper).addIncludeUrlPattern(sessionId, "https://test.com/.*");

        final String sessionId = "session1";
        final String urlPattern = "http://example.com/.*";

        urlFilterService.addIncludeUrlFilter(sessionId, urlPattern);

        // Verify the filter is stored
        assertTrue(fesenClient.prepareSearch("fess_crawler.filter")
                .setQuery(QueryBuilders.termQuery("sessionId", sessionId))
                .setSize(0)
                .execute()

        String[] passwords = { "secret123", "pass456" };
        data.putValues(ExtractData.FILE_PASSWORDS, passwords);

        // Verify content
        assertEquals(content, data.getContent());

        // Verify single values
        assertEquals("document.pdf", data.getValues(ExtractData.RESOURCE_NAME_KEY)[0]);

        // Execute
        service.updateSessionId(oldSessionId, newSessionId);

        // Verify
        verify(dataHelper).getUrlQueueList(oldSessionId);
        verify(dataHelper).addUrlQueueList(newSessionId, mockQueue);
        verify(dataHelper).removeUrlQueueList(oldSessionId);
    }

    public void test_poll() {
        // Setup
        String sessionId = "session123";

    ExecutorService service = mock(ExecutorService.class);
    application.addDelayedShutdownHook(service, 2, SECONDS);
    verify(service, Mockito.never()).shutdown();
    application.shutdown();
    InOrder shutdownFirst = Mockito.inOrder(service);
    shutdownFirst.verify(service).shutdown();
    shutdownFirst.verify(service).awaitTermination(2, SECONDS);
  }

        }

        // Verify content is valid JSON
        assertTrue("Content should start with {", contentNew.trim().startsWith("{"));
        assertTrue("Content should end with }", contentNew.trim().endsWith("}"));
        assertTrue("Content should be substantial", contentNew.length() > 100);

        // Verify it contains expected mapping fields