sanic/tests/test_ws_handlers.py

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from typing import Any, Callable, Coroutine
import pytest
from websockets.client import WebSocketClientProtocol
from sanic import Request, Sanic, Websocket
MimicClientType = Callable[
[WebSocketClientProtocol], Coroutine[None, None, Any]
]
@pytest.fixture
def simple_ws_mimic_client():
async def client_mimic(ws: WebSocketClientProtocol):
await ws.send("test 1")
await ws.recv()
await ws.send("test 2")
await ws.recv()
return client_mimic
def test_ws_handler(
app: Sanic,
simple_ws_mimic_client: MimicClientType,
):
@app.websocket("/ws")
async def ws_echo_handler(request: Request, ws: Websocket):
while True:
msg = await ws.recv()
await ws.send(msg)
_, ws_proxy = app.test_client.websocket(
"/ws", mimic=simple_ws_mimic_client
)
assert ws_proxy.client_sent == ["test 1", "test 2", ""]
assert ws_proxy.client_received == ["test 1", "test 2"]
def test_ws_handler_async_for(
app: Sanic,
simple_ws_mimic_client: MimicClientType,
):
@app.websocket("/ws")
async def ws_echo_handler(request: Request, ws: Websocket):
async for msg in ws:
await ws.send(msg)
_, ws_proxy = app.test_client.websocket(
"/ws", mimic=simple_ws_mimic_client
)
assert ws_proxy.client_sent == ["test 1", "test 2", ""]
assert ws_proxy.client_received == ["test 1", "test 2"]