// Execute
        String result = provider.toString();

        // Verify the string format
        assertNotNull(result);
        assertTrue(result.contains("FessUserTimeZoneProcessProvider"));
        assertTrue(result.contains("useTimeZoneHandling=false"));
        assertTrue(result.contains("acceptCookieTimeZone=false"));
        assertTrue(result.contains("@"));

        // Execute
        LoginCredential result = authenticator.getLoginCredential();

        // Verify
        assertNotNull(result);
        assertEquals(expectedCredential, result);
        assertEquals("testuser", ((TestLoginCredential) result).getUsername());
        assertEquals("testpass", ((TestLoginCredential) result).getPassword());
    }

    }

    // Test toString method
    public void test_toString() {
        String result = charMappingFile.toString();
        assertTrue(result.contains("MappingFile"));
        assertTrue(result.contains("path=" + testFile.getAbsolutePath()));
        assertTrue(result.contains("id=test_id"));
    }

    // Test get method with empty file
    public void test_get_emptyFile() throws Exception {

        scoreUpdater.addScoreBooster(booster3);

        String result = scoreUpdater.execute();

        // All boosters should be executed
        assertTrue(result.contains("TestScoreBooster : 100"));
        assertTrue(result.contains("TestScoreBooster : 200"));
        assertTrue(result.contains("TestScoreBooster : 300"));
    }

    // Test execute result format
    public void test_execute_resultFormat() {

            if (!result.isEmpty()) {
                setAttributeValue(result, fessConfig.getLdapAttrSurname(), o -> user.setSurname(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrGivenName(), o -> user.setGivenName(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrMail(), o -> user.setMail(o.toString()));

        User result = ldapChain.load(user);

        assertSame(user, result);
        assertEquals(user, testLdapManager.appliedUser);
        assertTrue(testLdapManager.applyCalled);
    }

    public void test_load_withNullUser() {
        // Test load with null user
        User result = ldapChain.load(null);

        assertNull(result);
        assertNull(testLdapManager.appliedUser);

        QueryContext context = new QueryContext("test", false);
        QueryBuilder result = booleanQueryCommand.execute(context, booleanQuery, 1.0f);

        assertNotNull(result);
        assertTrue(result instanceof BoolQueryBuilder);

        BoolQueryBuilder boolResult = (BoolQueryBuilder) result;
        assertTrue(boolResult.hasClauses());
    }

        assertEquals(1, result.getCurrentPageNumber());
        assertEquals(2, result.getPageSize());
        assertEquals(5, result.getAllRecordCount());
        assertEquals(3, result.getAllPageCount());
        assertEquals(1, result.getCurrentPageNumber());
    }

    public void test_selectList_offsetOutOfBounds() {
        loadTestData();

        DictionaryFile.PagingList<StopwordsItem> result = stopwordsFile.selectList(10, 2);

    Iterator<Entry<E>> entryIterator = entryIterator();
    if (entryIterator.hasNext()) {
      Entry<E> result = entryIterator.next();
      result = Multisets.immutableEntry(result.getElement(), result.getCount());
      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  public @Nullable Entry<E> pollLastEntry() {

    // Test API result with messages
    public void test_apiResultWithMessages() {
        String testMessage = "Test error message";
        ApiResult.ApiErrorResponse errorResponse = new ApiResult.ApiErrorResponse();
        errorResponse.message(testMessage);
        errorResponse.status(Status.BAD_REQUEST);
        ApiResult result = errorResponse.result();

        assertNotNull(result);