Files
Loki/backend/tests/test_mcp_manager.py
T
MichaelandClaude Opus 4.8 9f56989cc2 fix(mcp): noms d'outils à tirets (Context7) + read_file sur dossier
Les noms MCP à tirets (resolve-library-id) cassaient le tool-calling :
modèles et grammaires mélangent tirets et underscores -> « Tool not
found ». Les noms exposés sont assainis en underscores avec table de
correspondance vers le vrai nom, et l'appel tolère les deux formes.

read_file sur un dossier disait « fichier introuvable » : message
explicite « c'est un dossier — utilise list_dir ».

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-19 11:26:27 +02:00

97 lines
3.2 KiB
Python

import os
import sys
import tempfile
import textwrap
os.environ.setdefault("DATA_DIR", tempfile.mkdtemp())
os.environ.setdefault("WORKSPACE_DIR", tempfile.mkdtemp())
import pytest # noqa: E402
from app import db, mcp_client # noqa: E402
db.init_db()
# Serveur MCP minimal : un outil "echo" + un outil au nom À TIRETS
# (comme Context7 « resolve-library-id »).
_FAKE_SERVER = textwrap.dedent("""
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("fake")
@mcp.tool()
def echo(text: str) -> str:
\"\"\"Répète le texte fourni.\"\"\"
return "echo:" + text
@mcp.tool(name="dash-tool-name")
def dash_tool(text: str) -> str:
\"\"\"Outil au nom à tirets.\"\"\"
return "dash:" + text
mcp.run()
""")
@pytest.fixture()
def fake_server_cmd(tmp_path):
path = tmp_path / "fake_mcp.py"
path.write_text(_FAKE_SERVER, encoding="utf-8")
return [sys.executable, str(path)]
@pytest.mark.asyncio
async def test_tools_exposed_and_called(fake_server_cmd, monkeypatch):
monkeypatch.setitem(
mcp_client.CATALOG, "fake",
{"label": "Fake", "description": "", "command": fake_server_cmd,
"url_param": False, "env_params": [], "expose": None},
)
mcp_client.set_mcp_state("fake", enabled=True, params={})
mgr = mcp_client.McpManager()
try:
defs = await mgr.tool_definitions()
names = [d["function"]["name"] for d in defs]
assert "mcp_fake_echo" in names
# Nom à tirets exposé assaini (compatibilité function-calling).
assert "mcp_fake_dash_tool_name" in names
result = await mgr.call_tool("mcp_fake_echo", {"text": "bonjour"})
assert result["ok"] is True
assert "echo:bonjour" in result["content"]
# Appel via le nom assaini -> résolu vers le vrai nom à tirets.
dash = await mgr.call_tool("mcp_fake_dash_tool_name", {"text": "x"})
assert dash["ok"] is True and "dash:x" in dash["content"]
# Tolérance : le modèle répond avec des tirets au lieu d'underscores.
mixed = await mgr.call_tool("mcp_fake_dash-tool-name", {"text": "y"})
assert mixed["ok"] is True and "dash:y" in mixed["content"]
finally:
await mgr.aclose()
mcp_client.set_mcp_state("fake", enabled=False, params={})
@pytest.mark.asyncio
async def test_disabled_server_exposes_nothing():
mgr = mcp_client.McpManager()
try:
assert await mgr.tool_definitions() == []
finally:
await mgr.aclose()
@pytest.mark.asyncio
async def test_broken_server_never_raises(monkeypatch):
monkeypatch.setitem(
mcp_client.CATALOG, "broken",
{"label": "Broken", "description": "",
"command": [sys.executable, "-c", "import sys; sys.exit(3)"],
"url_param": False, "env_params": [], "expose": None},
)
mcp_client.set_mcp_state("broken", enabled=True, params={})
mgr = mcp_client.McpManager()
try:
assert await mgr.tool_definitions() == []
assert mgr.statuses()["broken"]["state"] == "error"
assert any("broken" in n.lower() or "Broken" in n for n in mgr.notices())
finally:
await mgr.aclose()
mcp_client.set_mcp_state("broken", enabled=False, params={})