def test_clear(self): logger = Logger(tee=False, indentation=4) logger.log(u"Message 1", Logger.DEBUG) logger.log(u"Message 2", Logger.INFO) logger.log(u"Message 3", Logger.WARNING) logger.log(u"Message 4", Logger.CRITICAL) self.assertEqual(len(logger), 4) logger.clear() self.assertEqual(len(logger), 0)