为什么我的 conftest 夹具不适用于所有 FastAPI 测试？

Question

conftest.py

import pytest
from ...main import app as starter
from fastapi.testclient import TestClient


@pytest.fixture(autouse=True, scope="module")
def client():
    client = TestClient(starter)
    return client

test_main.py

import pytest


@pytest.mark.unit
def test_root(client):
    response = client.get("/")
    assert response.json() == {"message": "Hello Bigger Applications!"}

test_router.py

import pytest


@pytest.mark.unit
class TestHelloRouter:
    def test_hello(client):
        response = client.get("/hello")
        assert response.json() == {"message": "Hello Router!"}


@pytest.mark.unit
class TestUserRouter:
    def test_read_users(client):
        response = client.get("/users/")
        assert response.json() == [{"username": "Rick"}, {"username": "Morty"}]

    def test_read_user_me(client):
        response = client.get("/users/me")
        assert response.json() == {"username": "fakecurrentuser"}

    def test_read_user(client):
        username = "unit-test"
        response = client.get(f"/users/{username}")
        assert response.json() == {"username": username}

为什么我在 test_router.py 文件中的所有测试都收到此错误？ client的fixture范围应该是session，autouse应该设置为true吗？

E       AttributeError: 'TestUserRouter' object has no attribute 'get'
E       AttributeError: 'TestHelloRouter' object has no attribute 'get'

Answer 1

由于这些是类，因此在我看来，您只是缺少 self 作为被测函数的第一个参数。

mport pytest


@pytest.mark.unit
class TestHelloRouter:
    def test_hello(self, client):
        response = client.get("/hello")
        assert response.json() == {"message": "Hello Router!"}


@pytest.mark.unit
class TestUserRouter:
    def test_read_users(self, client):
        response = client.get("/users/")
        assert response.json() == [{"username": "Rick"}, {"username": "Morty"}]

    def test_read_user_me(self, client):
        response = client.get("/users/me")
        assert response.json() == {"username": "fakecurrentuser"}

    def test_read_user(self, client):
        username = "unit-test"
        response = client.get(f"/users/{username}")
        assert response.json() == {"username": username}