@Override
    public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();
    }

    public void test_constructor() {
        // Test that constructor works properly
        assertNotNull(new LtrQueryRescorer());
    }

    public void test_evaluate_withBlankModelName() {
        // Test when model name is blank
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

        // The exception should be serializable since it extends RuntimeException
        assertTrue(exception instanceof java.io.Serializable);
    }

    public void test_stackTrace() {
        // Test stack trace is properly set
        ResultOffsetExceededException exception = new ResultOffsetExceededException("Stack trace test");

        StackTraceElement[] stackTrace = exception.getStackTrace();
        assertNotNull(stackTrace);

        // Note: Full testing requires a running OpenSearch cluster
        assertTrue(true);
    }

    public void test_fieldSetConfiguration() {
        // Test that field set configuration is properly handled
        Set<String> fieldSet = new HashSet<>();
        fieldSet.add("cluster_name");
        fieldSet.add("status");

        FessConfig mockConfig = new FessConfig.SimpleImpl() {

      byte[] got = out.toByteArray();
      for (int i = 0; i < expected.length; i++) {
        assertEquals(expected[i], got[i]);
      }
    }
  }

  // Assumes that AbstractNonStreamingHashFunction works properly (must be tested elsewhere!)
  private static class Control extends AbstractNonStreamingHashFunction {
    @Override
    public HashCode hashBytes(byte[] input, int off, int len) {

        assertEquals(1, dataMap.size());
        assertEquals("Z1", dataMap.get("z"));
    }

    /** Case 5: Overwrite processing for multiple fields, existing overwrite keys are also properly removed */
    public void test_mergeResponseData_multipleOverwrite() {
        Map<String, Object> dataMap = new HashMap<>();
        // Case where the initial dataMap also contains overwrite keys

        };
        ComponentUtil.register(mockSearchLogHelper, "searchLogHelper");

        // Execute the job
        String result = aggregateLogJob.execute();

        // Verify result handles null message properly
        assertNotNull(result);
        assertTrue(result.contains("null"));
        assertTrue(result.endsWith("\n"));
    }

    public void test_execute_withNestedExceptionCause() {

        assertNotNull(exception);
        assertTrue(exception instanceof java.io.Serializable);
    }

    public void test_stackTrace() {
        // Test that stack trace is properly captured
        String message = "Stack trace test";
        SearchEngineClientException exception = new SearchEngineClientException(message);

        assertNotNull(exception.getStackTrace());

     * Only encodes characters that are not considered URL-safe according to CharUtil.
     *
     * @param url the URL to encode
     * @return the encoded URL with non-URL-safe characters properly encoded
     */
    public static String encodeUrl(final String url) {
        final String enc = LaRequestUtil.getOptionalRequest()
                .filter(req -> req.getCharacterEncoding() != null)

        public static void shutdownAll() {
            throw new RuntimeException("Simulated exception during shutdown");
        }
    }

    // Test to verify the logger field is properly initialized
    public void test_loggerFieldInitialization() throws Exception {
        // Use reflection to access the private logger field
        Field loggerField = FessCurtainFinallyHook.class.getDeclaredField("logger");

                // Empty implementation for test
            }
        };
        // Should not throw exception
        invokerAssistant.toBeDisposable(process);
    }

    // Test static constants are properly initialized
    public void test_staticConstants() {
        // Test DEFAULT_CLIENT_INVOKE_NAMES
        String[] clientNames = ImplementedInvokerAssistant.DEFAULT_CLIENT_INVOKE_NAMES;
        assertNotNull(clientNames);