mcp-vala/test_prompt_validation.py

#!/usr/bin/env python3
"""
Test script to reproduce the prompt validation error
"""

import subprocess
import json
import sys
import os

def test_server_prompt():
    """Test the MCP server prompt functionality"""
    if len(sys.argv) != 2:
        print("Usage: python3 test_prompt_validation.py <server-executable>")
        sys.exit(1)
        
    server_path = sys.argv[1]
    if not os.path.exists(server_path):
        print(f"Error: Server executable '{server_path}' not found")
        sys.exit(1)
    
    print(f"Testing server: {server_path}")
    
    # Start the server process
    process = subprocess.Popen(
        [server_path],
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        text=False
    )
    
    try:
        # Send initialize request
        init_request = {
            "jsonrpc": "2.0",
            "method": "initialize",
            "id": 0,
            "params": {
                "protocolVersion": "2025-11-25",
                "capabilities": {},
                "clientInfo": {
                    "name": "test-client",
                    "version": "1.0.0"
                }
            }
        }
        
        request_str = json.dumps(init_request)
        message = f"Content-Length: {len(request_str)}\r\n\r\n{request_str}"
        process.stdin.write(message.encode())
        process.stdin.flush()
        
        # Read response
        response_line = process.stdout.readline()
        if response_line.startswith(b"Content-Length:"):
            content_length = int(response_line.decode().split(":")[1].strip())
            process.stdout.readline()  # Empty line
            response_data = process.stdout.read(content_length)
            response = json.loads(response_data.decode())
            
            if "result" in response:
                print("✓ Server initialized successfully")
            else:
                print("✗ Failed to initialize server")
                print(f"Response: {response}")
                return False
        
        # List prompts
        list_request = {
            "jsonrpc": "2.0",
            "method": "prompts/list",
            "id": 1,
            "params": {}
        }
        
        request_str = json.dumps(list_request)
        message = f"Content-Length: {len(request_str)}\r\n\r\n{request_str}"
        process.stdin.write(message.encode())
        process.stdin.flush()
        
        # Read response
        response_line = process.stdout.readline()
        if response_line.startswith(b"Content-Length:"):
            content_length = int(response_line.decode().split(":")[1].strip())
            process.stdout.readline()  # Empty line
            response_data = process.stdout.read(content_length)
            response = json.loads(response_data.decode())
            
            if "result" in response and "prompts" in response["result"]:
                prompts = response["result"]["prompts"]
                print(f"✓ Found {len(prompts)} prompts")
                
                if prompts:
                    # Get the first prompt
                    prompt_name = prompts[0]["name"]
                    print(f"Getting prompt: {prompt_name}")
                    
                    get_request = {
                        "jsonrpc": "2.0",
                        "method": "prompts/get",
                        "id": 2,
                        "params": {
                            "name": prompt_name
                        }
                    }
                    
                    request_str = json.dumps(get_request)
                    message = f"Content-Length: {len(request_str)}\r\n\r\n{request_str}"
                    process.stdin.write(message.encode())
                    process.stdin.flush()
                    
                    # Read response
                    response_line = process.stdout.readline()
                    if response_line.startswith(b"Content-Length:"):
                        content_length = int(response_line.decode().split(":")[1].strip())
                        process.stdout.readline()  # Empty line
                        response_data = process.stdout.read(content_length)
                        response = json.loads(response_data.decode())
                        
                        if "result" in response:
                            print("✓ Prompt retrieved successfully")
                            result = response["result"]
                            
                            # Validate the structure
                            if "messages" in result:
                                messages = result["messages"]
                                print(f"✓ Found {len(messages)} messages")
                                
                                for i, message in enumerate(messages):
                                    print(f"\nMessage {i}:")
                                    print(f"  Role: {message.get('role')}")
                                    
                                    if "content" in message:
                                        content = message["content"]
                                        content_type = content.get("type")
                                        print(f"  Content type: {content_type}")
                                        print(f"  Content: {json.dumps(content, indent=2)}")
                                        
                                        # Check for validation issues
                                        if content_type == "text":
                                            if "text" not in content:
                                                print("  ✗ Missing 'text' field for text content")
                                        elif content_type in ["image", "audio"]:
                                            if "data" not in content:
                                                print(f"  ✗ Missing 'data' field for {content_type} content")
                                            if "mimeType" not in content:
                                                print(f"  ✗ Missing 'mimeType' field for {content_type} content")
                                        elif content_type == "resource_link":
                                            if "name" not in content:
                                                print("  ✗ Missing 'name' field for resource_link content")
                                            if "uri" not in content:
                                                print("  ✗ Missing 'uri' field for resource_link content")
                                        elif content_type == "resource":
                                            if "resource" not in content:
                                                print("  ✗ Missing 'resource' field for resource content")
                            else:
                                print("✗ No 'messages' field in response")
                        else:
                            print("✗ No 'result' field in response")
                            if "error" in response:
                                print(f"ERROR: {json.dumps(response['error'], indent=2)}")
                                return False
                else:
                    print("✗ No prompts found")
            else:
                print("✗ Failed to list prompts")
                print(f"Response: {response}")
                return False
        
        return True
        
    finally:
        process.terminate()
        process.wait()

if __name__ == "__main__":
    success = test_server_prompt()
    sys.exit(0 if success else 1)