// Setup
        final String message = "";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message);

        // Verify empty message is preserved
        assertNotNull(exception);

        // Test with URL, message, and exception (abort defaults to false)
        String url = "http://example.com/test";
        String message = "Test error message";
        Exception cause = new RuntimeException("Root cause");

        DataStoreCrawlingException exception = new DataStoreCrawlingException(url, message, cause);

        assertEquals(url, exception.getUrl());

          message.startsWith("System property ") -> Type.Setup
          message.startsWith("Reload ") -> Type.Setup
          message == "No session to resume." -> Type.Handshake
          message.startsWith("Consuming ") -> Type.Handshake
          message.startsWith("Produced ") -> Type.Handshake
          message.startsWith("Negotiated ") -> Type.Handshake

    public CrawlerSystemException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new CrawlerSystemException with the specified detail message.
     *
     * @param message the detail message. The detail message is saved for later retrieval by the {@link #getMessage()} method.
     */
    public CrawlerSystemException(final String message) {
        super(message);
    }

        String message = "Localized error message";
        DataStoreException exception = new DataStoreException(message);

        // By default, getLocalizedMessage returns the same as getMessage
        assertEquals(message, exception.getLocalizedMessage());
    }

    public void test_toString() {
        // Test toString method
        String message = "Test exception";

            // Create and populate the RPC message
            WitnessHeartbeatMessage message = new WitnessHeartbeatMessage();
            message.setContextHandle(request.getContextHandle());
            message.setSequenceNumber(request.getSequenceNumber());

            // Send the RPC request
            rpcHandle.sendrecv(message);

            // Create response from RPC message results

            // Then: Should have correct values
            assertEquals(0x3e, message.getOpnum());
            assertEquals("system", message.system_name);
            assertEquals(456, message.unknown);
            assertEquals(123, message.access_mask);
            assertEquals(mockPolicyHandle, message.handle);
        }

        @Test
        @DisplayName("Should encode input with non-null system name")

    public void test_differentMessageCodes() {
        // Setup - test with different message codes
        final String message = "Test message";
        final VaMessenger<FessMessages> loginErrorCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);
        final VaMessenger<FessMessages> logoutErrorCode = messages -> messages.addSuccessSsoLogout(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute

        logger.error(message, t);
    }

    @Override
    public boolean isWarnEnabled() {
        return logger.isWarnEnabled();
    }

    @Override
    public void warn(final String message) {
        logger.warn(message);
    }

    @Override
    public void warn(final String message, final Throwable t) {
        logger.warn(message, t);
    }

    @DisplayName("Message-only constructor: preserves provided message; null cause")
    void messageOnlyConstructor_preservesMessage(String message) {
        // Arrange & Act
        SMBProtocolDecodingException ex = new SMBProtocolDecodingException(message);

        // Assert message and cause
        assertEquals(message, ex.getMessage(), "Message should be preserved as provided");