python pytest - 如何在其夹具方法中获取测试标记？

Question

我在 pytest 中进行了测试，并添加了一些标记，例如：' @pytest.mark.xfail '，测试有几种固定方法。 如何使用夹具方法获得某些测试的所有标记？

Answer 1

可以使用iter_markers从夹具请求node属性中获取标记，如以下（无意义的）示例所示：

import pytest


@pytest.fixture
def get_marks(request):
    marks = [m.name for m in request.node.iter_markers()]
    if request.node.parent:
        marks += [m.name for m in request.node.parent.iter_markers()]
    yield marks


@pytest.mark.parametrize('number', [1, 2, 3])
@pytest.mark.foo
@pytest.mark.xfail
def test_marks(get_marks, number):
    print(get_marks)
    assert 'xfail' in get_marks
    assert number == 42

这给出了 output：

...
xfail                                      [100%]['parametrize', 'xfail', 'foo']

get_marks = ['parametrize', 'xfail', 'foo'], number = 3

    @pytest.mark.parametrize('number', [1, 2, 3])
    @pytest.mark.foo
    @pytest.mark.xfail
    def test_marks(get_marks, number):
        print(get_marks)
        assert 'xfail' in get_marks
>       assert number == 42
E       assert 3 == 42

更新：使用正确的公开调用来获取@hoefling 建议的标记。

Answer 2

@MrBean 已经描述了一种方法，这是在conftest.py中使用pytest_runtest_setup的另一种方法。 通过全局变量和pytest_runtest_setup自己的方法 pytest_runtest_setup 的组合，您可以获得当前的测试标记。

这种方法将为您提供 class 级别和 function 级别的标记。

conftest.py

import pytest

marker_name = [] #Global variable so you can use it everywhere

def pytest_runtest_setup(item):
    global marker_name
    marker_name.clear() #If you would not clear this, it would append every test's marker, test by test. 
    for mark in item.iter_markers():
        marker_name.append(mark.name)


@pytest.fixture(scope='function', autouse=True) #Note here, autouse=true.
def my_fixture(request):
    request.instance.test_marker=marker_name #assign it to request's session so you can use it in other fixture and in tests as well

@pytest.fixture
def some_other_fixture(request):
    test_marker=request.instance.test_marker #access marker in fixture

test_file.py （使用 request.instance.test_marker 在测试中访问该标记变量。）

import pytest


@pytest.mark.class_marker
class TestClass:
    @pytest.mark.my_test
    @pytest.mark.xfail
    def test_foo(self,request):
        print(request.instance.test_marker) #output :  ['xfail', 'my_test', 'class_marker']

    @pytest.mark.my_test_two
    @pytest.mark.xfail
    def test_foo_two(self,request):
        print(request.instance.test_marker) #output :  ['xfail', 'my_test_two', 'class_marker']

希望它会有所帮助！