def test_something(space):
    assert space.w_None is space.w_None

class AppTestSomething:
    def test_method_app(self):
        assert 23 == 23

    def test_code_in_docstring_failing(self):
        """
        assert False # failing test
        """

    def test_code_in_docstring_ignored(self):
        """
        this docstring is not parsed as code because the function body is not
        empty
        """
        assert True


class TestSomething:
    def test_method(self):
        assert self.space