Testing FastAPI với pytest và TestClient?

from fastapi.testclient import TestClient
import pytest

def override_get_db():
    yield TestingSessionLocal()

app.dependency_overrides[get_db] = override_get_db
client = TestClient(app)

def test_create_user():
    res = client.post("/users", json={
        "name": "Alice", "email": "alice@test.com"
    })
    assert res.status_code == 201
    assert res.json()["email"] == "alice@test.com"

# Async test
@pytest.mark.asyncio
async def test_async():
    async with AsyncClient(app=app, base_url="http://test") as ac:
        res = await ac.get("/users/1")
    assert res.status_code == 200