class Context(dict):
    """
    Verb in class name as instruction to usage
    """

    def __getattr__(self, item):
        try:
            return self[item]
        except KeyError:
            raise AttributeError(
                '"{}" does not have "{}" attribute.'.format(self.__class__.__name__, item),
            )

    def __setattr__(self, key, value):
        self[key] = value

    def __delattr__(self, item):
        try:
            del self[item]
        except KeyError:
            raise AttributeError(
                '"{}" does not have "{}" attribute.'.format(self.__class__.__name__, item),
            )


class Base:

    _ctx = None

    @property
    def ctx(self):
        if self._ctx is None:
            self._ctx = Context()
        return self._ctx

    @pytest.fixture(scope='function', autouse=True)
    def setup(self):
        yield
        allure.attach(name='context',
                      body=json.dumps(self._ctx, indent=4),
                      attachment_type=allure.attachment_type.TEXT)


class Test(Base):

    def test(self):
        self.ctx.local_var = 1