test_fixtures.py 文件源码

def test_default_logging(self):
        stdlog = self.useFixture(fixtures.StandardLogging())
        root = logging.getLogger()
        # there should be a null handler as well at DEBUG
        self.assertEqual(2, len(root.handlers), root.handlers)
        log = logging.getLogger(__name__)
        log.info("at info")
        log.debug("at debug")
        self.assertIn("at info", stdlog.logger.output)
        self.assertNotIn("at debug", stdlog.logger.output)

        # broken debug messages should still explode, even though we
        # aren't logging them in the regular handler
        self.assertRaises(TypeError, log.debug, "this is broken %s %s", "foo")

        # and, ensure that one of the terrible log messages isn't
        # output at info
        warn_log = logging.getLogger('migrate.versioning.api')
        warn_log.info("warn_log at info, should be skipped")
        warn_log.error("warn_log at error")
        self.assertIn("warn_log at error", stdlog.logger.output)
        self.assertNotIn("warn_log at info", stdlog.logger.output)