pytestsupport.py 文件源码

def __call__(self, f):
        @wrapt.decorator
        def test_with_fixtures(wrapped, instance, args, kwargs):
            fixture_instances = [i for i in list(args) + list(kwargs.values())
                                     if i.__class__ in self.fixture_classes or i.scenario in self.requested_fixtures]
            dependency_ordered_fixtures = self.topological_sort_instances(fixture_instances)

            if six.PY2:
                with contextlib.nested(*list(dependency_ordered_fixtures)):
                    return wrapped(*args, **kwargs)
            else:
                with contextlib.ExitStack() as stack:
                    for fixture in dependency_ordered_fixtures:
                        stack.enter_context(fixture)
                    return wrapped(*args, **kwargs)

        ff = test_with_fixtures(f)
        arg_names = self.fixture_arg_names(ff)
        return pytest.mark.parametrize(','.join(arg_names), self.fixture_permutations())(ff)