assertEquals("", exception.getMessage());
        });

        // Test long message
        String longMessage = createTestString(1000);
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException(longMessage);
            assertEquals(longMessage, exception.getMessage());
        });

        // Test message with special characters

        @Test
        @DisplayName("Should handle very long messages")
        void testVeryLongMessage() {
            StringBuilder longMessage = new StringBuilder();
            for (int i = 0; i < 10000; i++) {
                longMessage.append("x");
            }
            String message = longMessage.toString();

            TransportException exception = new TransportException(message);

        }
        final String longMessage = longMessageBuilder.toString();
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);

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

        // Verify long message is handled correctly

        // Create a very long exception message
        StringBuilder longMessage = new StringBuilder("Error: ");
        for (int i = 0; i < 100; i++) {
            longMessage.append("This is a very long error message part ").append(i).append(". ");
        }
        final String errorMessage = longMessage.toString();

        // Create mock SearchEngineClient that throws exception with long message

            // Test with very long message
            StringBuilder longMessage = new StringBuilder();
            for (int i = 0; i < 1000; i++) {
                longMessage.append("This is a very long error message. ");
            }
            WebApiUtil.setError(500, longMessage.toString());

            // Test with special characters in message

  @Throws(IOException::class)
  override fun onReadMessage(text: String) {
    listener.onMessage(this, text)
  }

  @Throws(IOException::class)
  override fun onReadMessage(bytes: ByteString) {
    listener.onMessage(this, bytes)
  }

  @Synchronized override fun onReadPing(payload: ByteString) {

        override fun onOpen(
          webSocket: WebSocket,
          response: Response,
        ) = TODO()

        override fun onMessage(
          webSocket: WebSocket,
          text: String,
        ) = TODO()

        override fun onMessage(
          webSocket: WebSocket,
          bytes: ByteString,
        ) = TODO()

        override fun onClosing(

    clientListener.assertOpen()
    val server = serverListener.assertOpen()
    val e = RuntimeException()
    clientListener.setNextEventDelegate(
      object : WebSocketListener() {
        override fun onMessage(
          webSocket: WebSocket,
          text: String,
        ): Unit = throw e
      },
    )
    server.send("Hello, WebSockets!")
    clientListener.assertFailure(e)