for b in range(2):
            base_name = get_base_name(b)
            base = locals()[base_name]
            ns = getattr(api, base_name)
>           assert isinstance(ns, plugable.NameSpace)
E           AttributeError: 'module' object has no attribute 'NameSpace'

    def test_init(self):
        """
            Test the `ipalib.plugable.Plugin.__init__` method.
            """
        api = 'the api instance'
        o = self.cls(api)
        assert o.name == 'Plugin'
>       assert isinstance(o.doc, text.Gettext)
E       assert isinstance('\n    Base class for all plugins.\n    ', <class 'ipalib.text.Gettext'>)
E        +  where '\n    Base class for all plugins.\n    ' = ipalib.plugable.Plugin().doc
E        +  and   <class 'ipalib.text.Gettext'> = text.Gettext