FessConfig mockConfig = new FessConfig.SimpleImpl();
        ComponentUtil.setFessConfig(mockConfig);

        FessConfig result1 = ComponentUtil.getFessConfig();
        FessConfig result2 = ComponentUtil.getFessConfig();

        assertSame(result1, result2);
        assertSame(mockConfig, result1);
    }

    public void test_register_and_getComponent() {
        String testInstance = "test_instance";

        String result3 = crawlingInfoHelper.generateId(input3);
        assertNotNull(result3);
        assertEquals(128, result3.length());

        // Test that different inputs produce different results
        assertFalse(result1.equals(result2));
        assertFalse(result2.equals(result3));
        assertFalse(result1.equals(result3));
    }

    public void test_generateId_consistentResults() {

        assertFalse(result1);
        assertFalse(result2);
        assertFalse(result3);
        assertTrue(result4);
    }

    public void test_isUrlCrawlable_emptyUrl() {
        DataStoreParams paramMap = new DataStoreParams();
        paramMap.put("url_exclude_pattern", ".*");

        boolean result = indexUpdateCallback.isUrlCrawlable(paramMap, "");

        assertFalse(result);
    }

        // First execution
        String result1 = aggregateLogJob.execute();
        assertNotNull(result1);
        assertTrue(result1.contains("Error 1"));

        // Second execution
        String result2 = aggregateLogJob.execute();
        assertNotNull(result2);
        assertTrue(result2.contains("Error 2"));

        // Results should be independent
        assertFalse(result1.equals(result2));
    }

        Object result1 = scriptExecutor.execute("testengine", "script1");
        assertEquals("processed: script1", result1);

        Object result2 = scriptExecutor.execute("TESTENGINE", "script2");
        assertEquals("processed: script2", result2);

        Object result3 = scriptExecutor.execute("TestEngine", "script3");
        assertEquals("processed: script3", result3);
    }

        assertTrue(result1 instanceof MatchAllQueryBuilder);
        assertTrue(result2 instanceof MatchAllQueryBuilder);

        // Both should generate the same JSON
        String json1 = result1.toString().replaceAll("[\\s\\n]", "");
        String json2 = result2.toString().replaceAll("[\\s\\n]", "");
        assertEquals(json1, json2);
    }

        FuzzyQuery fuzzyQuery1 = new FuzzyQuery(term1, 1);
        QueryBuilder result1 = fuzzyQueryCommand.convertFuzzyQuery(context, fuzzyQuery1, 1.0f);
        assertNotNull(result1);
        assertTrue(result1 instanceof FuzzyQueryBuilder);
        FuzzyQueryBuilder fqb1 = (FuzzyQueryBuilder) result1;
        assertEquals("1", fqb1.fuzziness().asString());

        // Test with max edits = 2

                .build();

        LogEvent result1 = policy.rewrite(event1);
        LogEvent result2 = policy.rewrite(event2);
        LogEvent result3 = policy.rewrite(event3);

        assertEquals(Level.WARN, result1.getLevel());
        assertEquals(Level.WARN, result2.getLevel());
        assertEquals(Level.WARN, result3.getLevel());
    }

        PagingList<CharMappingItem> result1 = charMappingFile.selectList(0, 10);
        assertEquals(3, result1.size());
        assertEquals(3, result1.getAllRecordCount());
        assertEquals(1, result1.getAllPageCount());

        // Get first two items
        PagingList<CharMappingItem> result2 = charMappingFile.selectList(0, 2);
        assertEquals(2, result2.size());
        assertEquals(3, result2.getAllRecordCount());

        String result = popularWordHelper.getCacheKey(seed, tags, roles, fields, excludes);

        assertNotNull(result);
        assertTrue(result.contains("test_seed"));
        assertTrue(result.contains("tag1tag2"));
        assertTrue(result.contains("role1role2"));
        assertTrue(result.contains("field1field2"));
        assertTrue(result.contains("exclude1exclude2"));