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path: root/servers/hello_world/tests/test_prompts.py
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import pytest
import asyncio
from unittest.mock import AsyncMock, MagicMock, patch
import mcp.types as types
from mcp_server_hello_world.server import HelloWorldServer, create_server, GREETING_PROMPT_TEMPLATE

class TestPrompts:
    """Test the prompt functionality."""
    
    @pytest.mark.asyncio
    async def test_list_prompts(self):
        """Test the list_prompts method."""
        # Create a server
        mcp = create_server()
        
        # Get the list of prompts
        prompts = await mcp.list_prompts()
        
        # Verify the result
        assert len(prompts) == 1
        assert prompts[0].name == "greeting"
        assert "simple greeting prompt" in prompts[0].description.lower()
    
    @pytest.mark.asyncio
    async def test_get_prompt(self):
        """Test the get_prompt method."""
        # Create a server
        mcp = create_server()
        
        # Get the prompt
        prompt = await mcp.get_prompt("greeting", {"name": "Test User"})
        
        # Verify the result
        expected_prompt = GREETING_PROMPT_TEMPLATE.format(name="Test User")
        assert len(prompt.messages) > 0
        assert prompt.messages[0].role == "user"
        assert prompt.messages[0].content.type == "text"
        assert expected_prompt.strip() in prompt.messages[0].content.text
        
        # Test with unknown prompt
        with pytest.raises(ValueError):
            await mcp.get_prompt("unknown", {"name": "Test User"})
        
        # Test with missing name argument
        with pytest.raises(ValueError) as excinfo:
            await mcp.get_prompt("greeting", {})
        assert "Missing required arguments" in str(excinfo.value)