pytestplugin.py 文件源码

def pytest_runtest_setup(item):
    # here we seem to get called only based on what we collected
    # in pytest_collection_modifyitems.   So to do class-based stuff
    # we have to tear that out.
    global _current_class

    if not isinstance(item, pytest.Function):
        return

    # ... so we're doing a little dance here to figure it out...
    if item.parent.parent is not _current_class:

        class_setup(item.parent.parent)
        _current_class = item.parent.parent

        # this is needed for the class-level, to ensure that the
        # teardown runs after the class is completed with its own
        # class-level teardown...
        item.parent.parent.addfinalizer(
            lambda: class_teardown(item.parent.parent))

    test_setup(item)