Max
127 lines
5.0 KiB
Python
127 lines
5.0 KiB
Python
"""Tests for the server-side `Context`.
|
|
|
|
`Context` extends `BaseContext` (forwarding to a `DispatchContext`) with
|
|
`lifespan`, `connection`, and request-scoped `log`. End-to-end tested over
|
|
`DirectDispatcher`.
|
|
"""
|
|
|
|
from collections.abc import Mapping
|
|
from dataclasses import dataclass
|
|
from typing import Any
|
|
|
|
import anyio
|
|
import pytest
|
|
from mcp_types import LOG_LEVEL_META_KEY
|
|
from mcp_types.version import LATEST_MODERN_VERSION
|
|
|
|
from mcp.server.connection import Connection
|
|
from mcp.server.context import Context
|
|
from mcp.shared.dispatcher import DispatchContext
|
|
from mcp.shared.transport_context import TransportContext
|
|
|
|
from ..shared.conftest import direct_pair
|
|
from ..shared.test_dispatcher import Recorder, echo_handlers, running_pair
|
|
|
|
DCtx = DispatchContext[TransportContext]
|
|
|
|
|
|
@dataclass
|
|
class _Lifespan:
|
|
name: str
|
|
|
|
|
|
@pytest.mark.anyio
|
|
async def test_context_exposes_lifespan_and_connection_and_forwards_base_context():
|
|
captured: list[Context[_Lifespan]] = []
|
|
conn_holder: list[Connection] = []
|
|
|
|
async def server_on_request(dctx: DCtx, method: str, params: Mapping[str, Any] | None) -> dict[str, Any]:
|
|
ctx: Context[_Lifespan] = Context(dctx, lifespan=_Lifespan("app"), connection=conn_holder[0])
|
|
captured.append(ctx)
|
|
return {}
|
|
|
|
async with running_pair(direct_pair, server_on_request=server_on_request) as (client, server, *_):
|
|
conn_holder.append(Connection.for_loop(server, session_id="sess-1"))
|
|
with anyio.fail_after(5):
|
|
await client.send_raw_request("t", None)
|
|
ctx = captured[0]
|
|
assert ctx.lifespan.name == "app"
|
|
assert ctx.connection is conn_holder[0]
|
|
assert ctx.transport.kind == "direct"
|
|
assert ctx.can_send_request is True
|
|
assert ctx.session_id == "sess-1"
|
|
assert ctx.headers is None
|
|
|
|
|
|
@pytest.mark.anyio
|
|
async def test_context_log_sends_request_scoped_message_notification():
|
|
crec = Recorder()
|
|
_, c_notify = echo_handlers(crec)
|
|
|
|
async def server_on_request(dctx: DCtx, method: str, params: Mapping[str, Any] | None) -> dict[str, Any]:
|
|
ctx: Context[_Lifespan] = Context(dctx, lifespan=_Lifespan("app"), connection=Connection.for_loop(dctx))
|
|
await ctx.log("debug", "hello") # pyright: ignore[reportDeprecated]
|
|
return {}
|
|
|
|
async with running_pair(direct_pair, server_on_request=server_on_request, client_on_notify=c_notify) as (
|
|
client,
|
|
*_,
|
|
):
|
|
with anyio.fail_after(5):
|
|
await client.send_raw_request("t", None)
|
|
await crec.notified.wait()
|
|
method, params = crec.notifications[0]
|
|
assert method == "notifications/message"
|
|
assert params is not None and params["level"] == "debug" and params["data"] == "hello"
|
|
|
|
|
|
@pytest.mark.anyio
|
|
async def test_context_log_is_gated_by_the_request_log_level_at_2026():
|
|
"""On a 2026 connection an un-opted request delivers nothing; opting in at
|
|
`warning` delivers `warning`+ and drops what falls below."""
|
|
crec = Recorder()
|
|
_, c_notify = echo_handlers(crec)
|
|
|
|
async def server_on_request(dctx: DCtx, method: str, params: Mapping[str, Any] | None) -> dict[str, Any]:
|
|
modern = Connection.from_envelope(LATEST_MODERN_VERSION, None, None, outbound=dctx)
|
|
silent: Context[_Lifespan] = Context(dctx, lifespan=_Lifespan("app"), connection=modern)
|
|
await silent.log("emergency", "dropped: no opt-in") # pyright: ignore[reportDeprecated]
|
|
opted: Context[_Lifespan] = Context(
|
|
dctx, lifespan=_Lifespan("app"), connection=modern, meta={LOG_LEVEL_META_KEY: "warning"}
|
|
)
|
|
await opted.log("info", "dropped: below level") # pyright: ignore[reportDeprecated]
|
|
await opted.log("warning", "delivered") # pyright: ignore[reportDeprecated]
|
|
return {}
|
|
|
|
async with running_pair(direct_pair, server_on_request=server_on_request, client_on_notify=c_notify) as (
|
|
client,
|
|
*_,
|
|
):
|
|
with anyio.fail_after(5):
|
|
await client.send_raw_request("t", None)
|
|
await crec.notified.wait()
|
|
assert [p["data"] for _, p in crec.notifications if p is not None] == ["delivered"]
|
|
|
|
|
|
@pytest.mark.anyio
|
|
async def test_context_log_includes_logger_and_meta_when_supplied():
|
|
crec = Recorder()
|
|
_, c_notify = echo_handlers(crec)
|
|
|
|
async def server_on_request(dctx: DCtx, method: str, params: Mapping[str, Any] | None) -> dict[str, Any]:
|
|
ctx: Context[_Lifespan] = Context(dctx, lifespan=_Lifespan("app"), connection=Connection.for_loop(dctx))
|
|
await ctx.log("info", "x", logger="my.log", meta={"traceId": "t"}) # pyright: ignore[reportDeprecated]
|
|
return {}
|
|
|
|
async with running_pair(direct_pair, server_on_request=server_on_request, client_on_notify=c_notify) as (
|
|
client,
|
|
*_,
|
|
):
|
|
with anyio.fail_after(5):
|
|
await client.send_raw_request("t", None)
|
|
await crec.notified.wait()
|
|
_, params = crec.notifications[0]
|
|
assert params is not None
|
|
assert params["logger"] == "my.log"
|
|
assert params["_meta"] == {"traceId": "t"}
|