18     def tearDown(self):

    18     def tearDown(self):

    19         attrvalues = set(dir(_ValueGenerator))

    19         attrvalues = set(dir(_ValueGenerator))

    20         for attrname in attrvalues - set(self.attrvalues):

    20         for attrname in attrvalues - set(self.attrvalues):

    21             delattr(_ValueGenerator, attrname)

    21             delattr(_ValueGenerator, attrname)

    22 

    22 

    24     def test_autoextend(self):

    24     def test_autoextend(self):

    25         self.failIf('generate_server' in dir(ValueGenerator))

    25         self.failIf('generate_server' in dir(ValueGenerator))

    26         class MyValueGenerator(ValueGenerator):

    26         class MyValueGenerator(ValueGenerator):

    27             def generate_server(self, index):

    27             def generate_server(self, index):

    28                 return attrname

    28                 return attrname