def test_LISTGROUP(self):
        self.transport.clear()
        self.server.do_LISTGROUP('alt.test.nntp')
        self.assertEqual(
            self.transport.value().split('\r\n'), [
                '211 list of article numbers follow',
                '.',
                ''])
When L{NNTPServer} receives a I{LISTGROUP} command, it sends a list of
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/news/test/test_nntp.py/NNTPTestCase.test_LISTGROUP