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

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

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

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

        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 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));
    }

    @Test
    public void test_generateId_consistentResults() {

        String result1 = provider1.toString();
        String result2 = provider2.toString();

        // Both should have the same format structure
        assertTrue(result1.startsWith("FessUserTimeZoneProcessProvider:{"));
        assertTrue(result2.startsWith("FessUserTimeZoneProcessProvider:{"));

        // But different hash codes
        assertFalse(result1.equals(result2));
    }

        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);
    }

    @Test

        User result1 = createTestUser("result1", "Result One");
        User result2 = createTestUser("result2", "Result Two");

        chain.loadResult = result1;
        User returnedUser1 = chain.load(user1);

        chain.loadResult = result2;
        User returnedUser2 = chain.load(user2);

        assertEquals(result1, returnedUser1);
        assertEquals(result2, returnedUser2);

        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());
    }

    @Test

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

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

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

        assertFalse(result);
    }

        OptionalThing<Locale> result1 = provider.findBusinessLocale(null, mockRequestManager);
        OptionalThing<Locale> result2 = provider.findBusinessLocale(null, mockRequestManager);
        OptionalThing<Locale> result3 = provider.findBusinessLocale(null, mockRequestManager);

        // Verify all return same result
        assertTrue(result1.isPresent());
        assertTrue(result2.isPresent());