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pytest_parameters.md

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参数化

关注点:
pytest.fixture 的 params 参数.

  • origin_fixtures
    初始状态的代码

    ============================= test session starts ==============================
platform linux -- Python 3.8.10, pytest-7.1.0, pluggy-0.13.1
rootdir: notebook/tester/pytest/docs/fixtures/parameters/origin_fixtures, configfile: pytest.ini
plugins: xdist-2.5.0, allure-pytest-2.9.45, loadinitialconftests-0.0.0, cmdlineparse-0.0.0, forked-1.4.0
collected 2 items

test_case.py::test_ehlo FAILED                                           [ 50%]
test_case.py::test_noop FAILED                                           [100%]

=================================== FAILURES ===================================

  • parametrizing_fixtures
    增加参数化的代码

    ============================= test session starts ==============================
platform linux -- Python 3.8.10, pytest-7.1.0, pluggy-0.13.1
rootdir: notebook/tester/pytest/docs/fixtures/parameters/parametrizing_fixtures, configfile: pytest.ini
plugins: xdist-2.5.0, allure-pytest-2.9.45, loadinitialconftests-0.0.0, cmdlineparse-0.0.0, forked-1.4.0
collected 4 items

test_case.py::test_ehlo[smtpdm.aliyun.com] FAILED                        [ 25%]
test_case.py::test_noop[smtpdm.aliyun.com] FAILED                        [ 50%]
test_case.py::test_ehlo[mail.python.org] FAILED                          [ 75%]
test_case.py::test_noop[mail.python.org] FAILED                          [100%]

=================================== FAILURES ===================================

 

条件参数

关注点:
pytest.fixture 的 params 参数期望是一个列表类型的值, 它除了支持字符串、数字这些基础值之外,
还支持解析 pytest.param 成员, 用于标记某个参数是什么标签.
pytest.param(2, marks=pytest.mark.skip)
这行代码就是一个条件参数，指的是: 当参数值是2时, 采取SKIP策略;
备注: marks可以使用pytest.mark.skipIf来做更进一步的条件限定.

样例代码

# content of test_fixture_marks.py
import pytest


@pytest.fixture(params=[0, 1, pytest.param(2, marks=pytest.mark.skip)])
def data_set(request):
    return request.param


def test_data(data_set):
    pass

输出:

============================= test session starts ==============================
platform linux -- Python 3.8.10, pytest-7.1.0, pluggy-0.13.1
rootdir: notebook/tester/pytest/docs/fixtures/parameters/parametrizing_param
plugins: xdist-2.5.0, allure-pytest-2.9.45, loadinitialconftests-0.0.0, cmdlineparse-0.0.0, forked-1.4.0
collected 3 items

test_case.py::test_data[0] PASSED                                        [ 33%]
test_case.py::test_data[1] PASSED                                        [ 66%]
test_case.py::test_data[2] SKIPPED (unconditional skip / 无条件跳过)       [100%]

========================= 2 passed, 1 skipped in 0.03s =========================