test_app_v2.py

@pytest.fixture
def app():
    app = App()
    print("Starting app")
    app.start()
    yield app
    print("Stopping app")
    app.stop()


def test_app(app):
    """Test making an HTTP request to my app."""
    rsp = requests.get(f"{app.listen_addr}/hello")
    assert rsp.status_code == 200
    assert rsp.text == 'Hello, "/hello"'