// Should not throw exception
    }

    // Test addFieldLog with existing field
    public void test_addFieldLog_existingField() {
        Map<String, List<String>> fieldLogMap = new HashMap<>();
        List<String> existingList = new ArrayList<>();
        existingList.add("existing");
        fieldLogMap.put("field", existingList);

        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("url", "http://example.com/test");
        dataMap.put("doc_id", "existing-doc-id");

        indexUpdateCallback.store(paramMap, dataMap);

        // Should keep existing doc_id
        assertEquals("existing-doc-id", dataMap.get("doc_id"));
    }

    public void test_concurrentStore() throws Exception {
        // Test thread safety

            cb.query().setConfigId_Equal(configId);
        });
    }

    /**
     * Stores a new failure URL or updates an existing one with error information.
     * Creates a new failure URL entry or increments the error count for an existing URL.
     *
     * @param crawlingConfig the crawling configuration associated with the failure
     * @param errorName the name/type of the error that occurred

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * Form class for editing stopwords dictionary entries in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing stopwords entries.
 * Stopwords are common words that are typically ignored during text indexing and search operations.
 *
 */

import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing users in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing user entries,
 * including tracking information for optimistic locking.
 * Users represent individual accounts that can access and search within the system.
 *
 */

            op.setup(form -> {
                form.initialize();
                form.crudMode = CrudMode.CREATE;
            });
        });
    }

    /**
     * Displays the form for editing an existing duplicate host configuration.
     *
     * @param form the edit form containing the duplicate host ID
     * @return HTML response for the duplicate host edit form
     */
    @Execute
    @Secured({ ROLE })

    public void test_update() throws Exception {
        writeTestFile("a,b => c\nd,e => f\n");

        // Get existing item
        OptionalEntity<CharMappingItem> existing = charMappingFile.get(1L);
        assertTrue(existing.isPresent());

        // Update the item
        CharMappingItem updateItem = existing.get();
        updateItem.setNewInputs(new String[] { "m", "n" });
        updateItem.setNewOutput("o");

import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing duplicate host configurations in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing duplicate host entries,
 * including tracking information for optimistic locking and audit trails.

        // Test loading into existing map
        paramMap = new HashMap<>();
        paramMap.put("existing", "existingValue");
        configParam = "key1=value1\nkey2=value2";
        ParameterUtil.loadConfigParams(paramMap, configParam);
        assertEquals(3, paramMap.size());
        assertEquals("existingValue", paramMap.get("existing"));
        assertEquals("value1", paramMap.get("key1"));

        assertNotNull(filename);
        assertTrue(filename.endsWith(".jpg"));
        assertTrue(filename.contains(docid));
    }

    // Test getThumbnailFile with existing file
    public void test_getThumbnailFile_exists() throws IOException {
        Map<String, Object> docMap = new HashMap<>();
        docMap.put("_id", "testdoc");