mirror of https://github.com/tiangolo/fastapi.git
80 lines
2.0 KiB
Python
80 lines
2.0 KiB
Python
from collections.abc import Generator
|
|
from contextlib import contextmanager
|
|
from typing import Annotated, Any
|
|
|
|
import pytest
|
|
from fastapi import Depends, FastAPI, WebSocket
|
|
from fastapi.testclient import TestClient
|
|
|
|
|
|
class Session:
|
|
def __init__(self) -> None:
|
|
self.data = ["foo", "bar", "baz"]
|
|
self.open = True
|
|
|
|
def __iter__(self) -> Generator[str, None, None]:
|
|
for item in self.data:
|
|
if self.open:
|
|
yield item
|
|
else:
|
|
raise ValueError("Session closed")
|
|
|
|
|
|
@contextmanager
|
|
def acquire_session() -> Generator[Session, None, None]:
|
|
session = Session()
|
|
try:
|
|
yield session
|
|
finally:
|
|
session.open = False
|
|
|
|
|
|
def dep_session() -> Any:
|
|
with acquire_session() as s:
|
|
yield s
|
|
|
|
|
|
def broken_dep_session() -> Any:
|
|
with acquire_session() as s:
|
|
s.open = False
|
|
yield s
|
|
|
|
|
|
SessionDep = Annotated[Session, Depends(dep_session)]
|
|
BrokenSessionDep = Annotated[Session, Depends(broken_dep_session)]
|
|
|
|
app = FastAPI()
|
|
|
|
|
|
@app.websocket("/ws")
|
|
async def websocket_endpoint(websocket: WebSocket, session: SessionDep):
|
|
await websocket.accept()
|
|
for item in session:
|
|
await websocket.send_text(f"{item}")
|
|
|
|
|
|
@app.websocket("/ws-broken")
|
|
async def websocket_endpoint_broken(websocket: WebSocket, session: BrokenSessionDep):
|
|
await websocket.accept()
|
|
for item in session:
|
|
await websocket.send_text(f"{item}") # pragma no cover
|
|
|
|
|
|
client = TestClient(app)
|
|
|
|
|
|
def test_websocket_dependency_after_yield():
|
|
with client.websocket_connect("/ws") as websocket:
|
|
data = websocket.receive_text()
|
|
assert data == "foo"
|
|
data = websocket.receive_text()
|
|
assert data == "bar"
|
|
data = websocket.receive_text()
|
|
assert data == "baz"
|
|
|
|
|
|
def test_websocket_dependency_after_yield_broken():
|
|
with pytest.raises(ValueError, match="Session closed"):
|
|
with client.websocket_connect("/ws-broken"):
|
|
pass # pragma no cover
|