使用带有yield的fixture时的pytest AttributeError

Question

我正在使用pytest fixture和yield。但是在尝试获取yield return

的值时会收到AttributeError

conftest.py

@pytest.fixture()
def driver_setup():
    driver = webdriver.Firefox()
    yield driver
    driver.quit()

basetest.py

@pytest.mark.usefixtures("driver_setup")
class BaseTest:
    pass

test_example.py

class TestExample(BaseTest):

    def test_example(self):
        self.driver.get(url)
        pass

输出：AttributeError: 'TestExample' object has no attribute 'driver'

Answer 1

如果您想在测试中访问driver_setup，则需要更新driver fixture，如下所示。

@pytest.fixture()
def driver_setup(request):
    driver = webdriver
    request.cls.driver = driver
    yield
    driver.quit()

有关详细信息，请参阅http://computableverse.com/blog/pytest-sharing-class-fixtures。