fastapi_async_testing_with_httpx_asyncclient_and_asgi_transport.py

1import pytest
2from fastapi import FastAPI
3from httpx import ASGITransport, AsyncClient
4
5app = FastAPI()
6
7
8@app.get("/")
9async def read_main():
10    return {"msg": "Hello World"}
11
12
13@pytest.mark.anyio
14async def test_read_main():
15    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as ac:
16        response = await ac.get("/")
17    assert response.status_code == 200
18    assert response.json() == {"msg": "Hello World"}