def test_emitEventWithBrokenRepr(self):
"""
DefaultObserver.emit() does not raise when it observes an error event
with a message that causes L{repr} to raise.
"""
class Ouch(object):
def __repr__(self):
return str(1 / 0)
message = ("foo", Ouch())
event = dict(message=message, isError=1)
observer = log.DefaultObserver()
with StringIO() as output:
observer.stderr = output
observer.emit(event)
self.assertTrue(output.getvalue().startswith("foo <Ouch instance"))
def test_failureLogger(self):
"""
The reason argument passed to log.err() appears in the report
generated by DefaultObserver.
"""
from StringIO import StringIO
obs = log.DefaultObserver()
obs.stderr = StringIO()
obs.start()
reason = "The reason."
log.err(Exception(), reason)
errors = self.flushLoggedErrors()
self.assertSubstring(reason, obs.stderr.getvalue())
self.assertEqual(len(errors), 1)
obs.stop()
def test_failureLogger(self):
"""
The reason argument passed to log.err() appears in the report
generated by DefaultObserver.
"""
self.catcher = []
self.observer = self.catcher.append
log.addObserver(self.observer)
self.addCleanup(log.removeObserver, self.observer)
obs = log.DefaultObserver()
obs.stderr = StringIO()
obs.start()
self.addCleanup(obs.stop)
reason = "The reason."
log.err(Exception(), reason)
errors = self.flushLoggedErrors()
self.assertIn(reason, obs.stderr.getvalue())
self.assertEqual(len(errors), 1)
def set_up_logging(where):
class ignr(logging.Filter):
def filter(self, r):
return r.levelname != "INFO"
format = "%(asctime)s %(levelname)s: %(message)s" if where else "%(message)s"
filename = os.path.expanduser(where) if where else None
logging.basicConfig(level=logging.DEBUG,
format=format,
datefmt="%b %d %H:%M:%S",
filename=filename,
stream=sys.stdout)
twistlog = logging.getLogger('twisted')
twistlog.addFilter(ignr())
try:
observer = log.PythonLoggingObserver()
except AttributeError:
observer = log.DefaultObserver()
observer.start()
