fastapi_async_testing_with_httpx_asyncclient_and_pytest.py

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