// Verify
        assertNotNull(factory);
        assertNotNull(factory.handerMap);
        assertTrue(factory.handerMap.isEmpty());
    }

    // Test implementation of CorsHandler for testing purposes
    private static class TestCorsHandler extends CorsHandler {
        private final String name;

        public TestCorsHandler(String name) {
            this.name = name;
        }

            // Expected due to null user - depth check passed, processing attempted
            assertTrue(true);
        } catch (Exception e) {
            // Other exceptions are also acceptable as we're testing depth logic
            assertTrue(true);
        }
    }

    @Test
    public void test_processParentGroup_callsOverloadWithDepth() {
        EntraIdAuthenticator authenticator = new EntraIdAuthenticator();

        }

        // Both should produce similar results
        assertNotNull(result1);
        assertNotNull(result2);
    }

    /**
     * Test query command implementation for testing purposes.
     */
    private static class TestQueryCommand extends QueryCommand {

        @Override
        public QueryBuilder execute(QueryContext context, Query query, float boost) {

        Map<String, Object> paramMap = new HashMap<>();

        Object result = scriptEngine.evaluate(template, paramMap);
        assertNull(result);
    }

    // Test implementation of ScriptEngine for testing
    private static class TestScriptEngine implements ScriptEngine {
        @Override
        public Object evaluate(String template, Map<String, Object> paramMap) {
            if (template == null) {

                    java.util.function.BiFunction<org.opensearch.action.update.UpdateRequestBuilder, org.opensearch.search.SearchHit, org.opensearch.action.update.UpdateRequestBuilder> processor) {
                // Return a fixed count for testing
                return 3L;
            }
        };
        ComponentUtil.register(mockSearchEngineClient, "searchEngineClient");

        // Mock FessConfig

            fessConfig.setSystemProperty("entraid.client.secret", form.entraidClientSecret);
        }
        fessConfig.setSystemProperty("entraid.tenant", form.entraidTenant);
        fessConfig.setSystemProperty("entraid.authority", form.entraidAuthority);
        fessConfig.setSystemProperty("entraid.reply.url", form.entraidReplyUrl);

 * Tests the array handling improvements and data merging functionality.
 */
public class FessTransformerTest extends UnitFessTestCase {

    // Test implementation of FessTransformer for testing
    private static class TestFessTransformer implements FessTransformer {
        private static final Logger logger = LogManager.getLogger(TestFessTransformer.class);

        @Override

        assertTrue(result.endsWith("\n"));
    }

    @Test
    public void test_execute_concurrentCalls() {
        // Setup mock SearchLogHelper for concurrent testing
        final Object lock = new Object();
        final int[] callCount = { 0 };

        SearchLogHelper mockSearchLogHelper = new SearchLogHelper() {
            @Override

        assertNotNull(className);
        assertEquals("TestPager", className);
    }

    // Mock implementation of NamingConvention for testing
    private static class MockNamingConvention implements NamingConvention {
        @Override
        public String getAssistSuffix() {
            return "Assist";
        }

        @Override

        assertNotNull(memoryLog2);
        assertTrue(memoryLog1.contains("Mem:"));
        assertTrue(memoryLog2.contains("Mem:"));
    }

    // Custom test class for fallback object testing
    private static class CustomTestObject {
        @SuppressWarnings("unused")
        private final String field = "test";
    }

    private long getObjectSize(Object value) {