test_logging.py 文件源码

def setUp(self):
        class CheckingFilter(logging.Filter):
            def __init__(self, cls):
                self.cls = cls

            def filter(self, record):
                t = type(record)
                if t is not self.cls:
                    msg = 'Unexpected LogRecord type %s, expected %s' % (t,
                            self.cls)
                    raise TypeError(msg)
                return True

        BaseTest.setUp(self)
        self.filter = CheckingFilter(DerivedLogRecord)
        self.root_logger.addFilter(self.filter)
        self.orig_factory = logging.getLogRecordFactory()