"""Integration tests for dynamic tool list feature.
Starts the MCP server as a subprocess with
``OUTLINE_DYNAMIC_TOOL_LIST=true`` and verifies that:
- The server starts and completes the MCP handshake.
- Tools are still returned (no crash due to the feature).
"""
import os
import sys
import pytest
from mcp.client.session import ClientSession
from mcp.client.stdio import StdioServerParameters, stdio_client
@pytest.mark.integration
@pytest.mark.anyio
async def test_dynamic_tool_list_server_starts():
"""Server starts cleanly with OUTLINE_DYNAMIC_TOOL_LIST=true.
Guards against: the dynamic tool list feature crashing the
server at startup or breaking the MCP protocol handshake.
"""
env = os.environ.copy()
env["MCP_TRANSPORT"] = "stdio"
env["OUTLINE_DYNAMIC_TOOL_LIST"] = "true"
server_params = StdioServerParameters(
command=sys.executable,
args=["-m", "mcp_outline"],
env=env,
)
async with stdio_client(server_params) as (read, write):
async with ClientSession(read, write) as session:
result = await session.initialize()
assert result.serverInfo.name == "Document Outline"
# Verify tools are still returned
tools_result = await session.list_tools()
assert len(tools_result.tools) > 2
