cpython/Lib/test/support/logging_helper.py at master · python-emscripten/cpython · GitHub

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import logging.handlers

class TestHandler(logging.handlers.BufferingHandler):

def __init__(self, matcher):

# BufferingHandler takes a "capacity" argument

# so as to know when to flush. As we're overriding

# shouldFlush anyway, we can set a capacity of zero.

# You can call flush() manually to clear out the

# buffer.

logging.handlers.BufferingHandler.__init__(self, 0)

self.matcher = matcher

def shouldFlush(self):

return False

def emit(self, record):

self.format(record)

self.buffer.append(record.__dict__)

def matches(self, **kwargs):

"""

Look for a saved dict whose keys/values match the supplied arguments.

"""

result = False

for d in self.buffer:

if self.matcher.matches(d, **kwargs):

result = True

break

return result