when(dataHelper.getExcludeUrlPatternList(sessionId)).thenReturn(mockPatterns);

        // Execute
        List<Pattern> result = service.getExcludeUrlPatternList(sessionId);

        // Verify
        assertNotNull(result);
        assertEquals(2, result.size());
        assertEquals(mockPatterns, result);
        verify(dataHelper).getExcludeUrlPatternList(sessionId);
    }

                .getHits()
                .getTotalHits()
                .value() > 0);

        // Verify pattern can be retrieved
        final List<Pattern> patterns = urlFilterService.getExcludeUrlPatternList(sessionId);
        assertEquals(1, patterns.size());
        assertTrue(patterns.get(0).matcher("http://example.com/admin/users").matches());

     * @param sessionId The session ID.
     * @return The list of compiled exclude patterns.
     * @throws CrawlerSystemException if the patterns cannot be loaded.
     */
    @Override
    public List<Pattern> getExcludeUrlPatternList(final String sessionId) {
        try {
            return excludeFilterCache.get(sessionId);
        } catch (final ExecutionException e) {
            throw new CrawlerSystemException(e);
        }
    }