py.test :可以在测试函数级别应用多个标记吗? [英] py.test : Can multiple markers be applied at the test function level?

问题描述

我从 pytest 文档 中看到，我们可以一次应用多个标记类或模块级别.我没有找到在测试功能级别执行此操作的文档.有没有人成功地做到了这一点?

I have seen from the pytest docs that we can apply multiple markers at once on the Class or module level. I didn't find documentation for doing it at the test function level. Has anybody done this before with success?

我想在理想情况下将其作为标记列表来执行，例如在上面的类文档中完成的操作(引用自文档):

I would like to ideally do this as a list of markers as being done in the above doc for Classes, for example (quoting from the docs):

class TestClass:
    pytestmark = [pytest.mark.webtest, pytest.mark.slowtest]

因此，pytest 文档讨论了使用 pytestmark 在类和模块级别指定标记.但是，它没有谈论在测试功能级别有类似的东西.我必须在测试函数之上单独指定标记，以便用它们中的每一个标记它们.随着测试函数顶部标记数量的增加，这使得测试代码看起来有点笨拙.

So, the pytest documentation talks about using pytestmark to specify the markers at the class and module level. However, it doesn't talk about having something similar at the test function level. I would have to specify the markers individually on top of test functions to get them marked with each one of them. This makes the test code look a little clunky with the increasing number of markers on top of test functions.

test_example.py:

test_example.py:

pytestmark = [class1, class2]

class TestFeature(TestCase):

    @pytest.mark.marker1
    @pytest.mark.marker2
    @pytest.mark.marker3
    def test_function(self):
        assert True

推荐答案

对于函数，你只需重复装饰器:

For functions you just repeat the decorator:

@pytest.mark.webtest
@pytest.mark.slowtest
def test_something(...):
    ...

如果你想在多个测试中重用它，你应该记住装饰器只是返回装饰物的函数，所以几个装饰器只是一个组合:

If you want to reuse that for several tests you should remember that decorators are just functions returning decorated thing, so several decorators is just a composition:

def compose_decos(decos):
    def composition(func):
        for deco in reversed(decos):
            func = deco(func)
        return func
    return composition

all_marks = compose_decos(pytest.mark.webtest, pytest.mark.slowtest)

@all_marks
def test_something(...):
    ...

或者您可以使用通用组合，例如我的 funcy 库:

Or you can use general purpose composition such as my funcy library has:

from funcy import compose

all_marks = compose(pytest.mark.webtest, pytest.mark.slowtest)

请注意，通过这种方式，您可以组合任何装饰器，而不仅仅是 pytest 标记.

Note that this way you can compose any decorators, not only pytest marks.

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