作为FastAPI的新手,我不愿意测试比我在教程中看到的更困难的代码。我使用fastapi_cache模块和Redis,如下所示:
from fastapi import Depends, FastAPI, Query, Request
from fastapi_cache.backends.redis import CACHE_KEY, RedisCacheBackend
from fastapi_cache import caches, close_caches
app = FastAPI()
def redis_cache():
return caches.get(CACHE_KEY)
@app.get('/cache')
async def test(
cache: RedisCacheBackend = Depends(redis_cache),
n: int = Query(
...,
gt=-1
)
):
# code that uses redis cache
@app.on_event('startup')
async def on_startup() -> None:
rc = RedisCacheBackend('redis://redis')
caches.set(CACHE_KEY, rc)
@app.on_event('shutdown')
async def on_shutdown() -> None:
await close_caches()test_main.py看起来是这样的:
import pytest
from httpx import AsyncClient
from .main import app
@pytest.mark.asyncio
async def test_cache():
async with AsyncClient(app=app, base_url="http://test") as ac:
response = await ac.get("/cache?n=150")当我运行pytest时,它将cache变量设置为None,然后测试失败。我想我理解为什么代码不起作用了。但是,如何修复它以正确测试缓存呢?
发布于 2020-11-29 14:25:30
关键是httpx没有实现生存期协议并触发startup事件处理程序。为此,您需要使用LifespanManager。
安装:pip install asgi_lifespan
代码应该是这样的:
import pytest
from asgi_lifespan import LifespanManager
from httpx import AsyncClient
from .main import app
@pytest.mark.asyncio
async def test_cache():
async with LifespanManager(app):
async with AsyncClient(app=app, base_url="http://localhost") as ac:
response = await ac.get("/cache")https://stackoverflow.com/questions/65051581
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