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上一小节我们学习了fixture的yield关键字,本小节我们讲解一下使用多个fixture的方法。
使用多个fixture
如果用例需要用到多个fixture的返回数据,fixture也可以return一个元组、list或字典,然后从里面取出对应数据。
#test_demo.py
import pytest@pytest.fixture()
def user():print("获取用户名")a = "yoyo"b = "123456"return (a, b)def test_1(user):u = user[0]p = user[1]print("测试账号:%s, 密码:%s" % (u, p))assert u == "yoyo"if __name__ == "__main__":pytest.main(["-s", "test_demo.py"])
当然也可以分开定义成多个fixture,然后test_用例传多个fixture参数
# test_demo.py
import pytest@pytest.fixture()
def user():print("获取用户名")a = "yoyo"return a@pytest.fixture()
def psw():print("获取密码")b = "123456"return bdef test_1(user, psw):'''传多个fixture'''print("测试账号:%s, 密码:%s" % (user, psw))assert user == "yoyo"if __name__ == "__main__":pytest.main(["-s", "test_demo.py"])
fixture与fixture互相调用
#test_demo.py
import pytest@pytest.fixture()
def first():print("获取用户名")a = "yoyo"return a@pytest.fixture()
def sencond(first):'''psw调用user fixture'''a = firstb = "123456"return (a, b)def test_1(sencond):'''用例传fixture'''print("测试账号:%s, 密码:%s" % (sencond[0], sencond[1]))assert sencond[0] == "yoyo"if __name__ == "__main__":pytest.main(["-s", "test_demo.py"])
fixture的重命名
通过前面学习fixture可以正常的代替setup和teardown,我们在后期框架中的文件名过多,或者函数名过多,有时会和fixture名字进行重名,或者fixture调用容易出错。fixture也可以进行重新自己更改自己的名称。
在fixture源码中我们可以通过修改name的参数来更改fixture的名称。默认是我们定义def的名称
def fixture( # noqa: F811fixture_function: Optional[_FixtureFunction] = None,*,scope: "Union[_Scope, Callable[[str, Config], _Scope]]" = "function",params: Optional[Iterable[object]] = None,autouse: bool = False,ids: Optional[Union[Iterable[Union[None, str, float, int, bool]],Callable[[Any], Optional[object]],]] = None,name: Optional[str] = None
说这么多,大家也不知道说的啥,举个例子吧,这里我把函数名为login的fixture通过配置参数name=“mitu_login”
# test_demo.pyimport pytest@pytest.fixture(name='mitu_login')
def login():print('输入账号,输入密码')print('完成登录功能!!!!')yieldprint('---退出登录---')class Test_Login:def test_01(self, mitu_login):print('------用例01------')def test_02(self):print('------用例02------')def test_03(self, mitu_login):print('------用例03------')if __name__ == '__main__':pytest.main(['-s', 'test_demo.py'])
运行结果:
========================================================================================= test session starts ==========================================================================================
platform win32 -- Python 3.9.12, pytest-7.3.1, pluggy-0.13.1
rootdir: D:\PycharmProjects\Source_Code\pytest_demo
plugins: allure-pytest-2.13.2, html-4.1.1, metadata-3.0.0
collected 3 items test_demo.pySETUP F mitu_logintest_demo.py::Test_Login::test_01 (fixtures used: mitu_login).TEARDOWN F mitu_logintest_demo.py::Test_Login::test_02.SETUP F mitu_logintest_demo.py::Test_Login::test_03 (fixtures used: mitu_login).TEARDOWN F mitu_login========================================================================================== 3 passed in 0.04s ===========================================================================================
这里发现我们通过使用anjing_login 就直接调用了更改名前的login。
注意:当我们进行对fixture重命名后,如果再次调用以前的名字就会出现报错
import pytest@pytest.fixture(name='mitu_login')
def login():print('输入账号,输入密码')print('完成登录功能!!!!')yieldprint('---退出登录---')class Test_Login:def test_01(self, login):print('------用例01------')def test_02(self):print('------用例02------')def test_03(self, mitu_login):print('------用例03------')if __name__ == '__main__':pytest.main(['-s', 'test_demo.py'])
运行结果
========================================================================================= test session starts ==========================================================================================
platform win32 -- Python 3.9.12, pytest-7.3.1, pluggy-0.13.1
rootdir: D:\PycharmProjects\Source_Code\pytest_demo
plugins: allure-pytest-2.13.2, html-4.1.1, metadata-3.0.0
collected 3 items test_demo.py Etest_demo.py::Test_Login::test_02.SETUP F mitu_logintest_demo.py::Test_Login::test_03 (fixtures used: mitu_login).TEARDOWN F mitu_login================================================================================================ ERRORS ================================================================================================
_________________________________________________________________________________ ERROR at setup of Test_Login.test_01 _________________________________________________________________________________
file D:\PycharmProjects\Source_Code\pytest_demo\test_demo.py, line 14def test_01(self, login):
E fixture 'login' not found
> available fixtures: cache, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, extra, extras, include_metadata_in_junit_xml, metadata, mitu_login, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.D:\PycharmProjects\Source_Code\pytest_demo\test_demo.py:14
======================================================================================= short test summary info ========================================================================================
ERROR test_demo.py::Test_Login::test_01
====================================================================================== 2 passed, 1 error in 0.03s ======================================================================================
PS D:\PycharmProjects\Source_Code\pytest_demo>
最后感谢每一个认真阅读我文章的人,礼尚往来总是要有的,虽然不是什么很值钱的东西,如果你用得到的话可以直接拿走,希望可以帮助到大家!领取资料,咨询答疑,请➕wei: June__Go