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synapse/tests/unittest.py

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# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import twisted
from twisted.trial import unittest
import logging
# logging doesn't have a "don't log anything at all EVARRRR setting,
# but since the highest value is 50, 1000000 should do ;)
NEVER = 1000000
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter(
"%(levelname)s:%(name)s:%(message)s [%(pathname)s:%(lineno)d]"
))
logging.getLogger().addHandler(handler)
logging.getLogger().setLevel(NEVER)
logging.getLogger("synapse.storage.SQL").setLevel(NEVER)
logging.getLogger("synapse.storage.txn").setLevel(NEVER)
def around(target):
"""A CLOS-style 'around' modifier, which wraps the original method of the
given instance with another piece of code.
@around(self)
def method_name(orig, *args, **kwargs):
return orig(*args, **kwargs)
"""
def _around(code):
name = code.__name__
orig = getattr(target, name)
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def new(*args, **kwargs):
return code(orig, *args, **kwargs)
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setattr(target, name, new)
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return _around
class TestCase(unittest.TestCase):
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"""A subclass of twisted.trial's TestCase which looks for 'loglevel'
attributes on both itself and its individual test methods, to override the
root logger's logging level while that test (case|method) runs."""
def __init__(self, methodName, *args, **kwargs):
super(TestCase, self).__init__(methodName, *args, **kwargs)
method = getattr(self, methodName)
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level = getattr(method, "loglevel", getattr(self, "loglevel", NEVER))
@around(self)
def setUp(orig):
# enable debugging of delayed calls - this means that we get a
# traceback when a unit test exits leaving things on the reactor.
twisted.internet.base.DelayedCall.debug = True
old_level = logging.getLogger().level
if old_level != level:
@around(self)
def tearDown(orig):
ret = orig()
logging.getLogger().setLevel(old_level)
return ret
logging.getLogger().setLevel(level)
return orig()
def assertObjectHasAttributes(self, attrs, obj):
"""Asserts that the given object has each of the attributes given, and
that the value of each matches according to assertEquals."""
for (key, value) in attrs.items():
if not hasattr(obj, key):
raise AssertionError("Expected obj to have a '.%s'" % key)
try:
self.assertEquals(attrs[key], getattr(obj, key))
except AssertionError as e:
raise (type(e))(e.message + " for '.%s'" % key)
def DEBUG(target):
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"""A decorator to set the .loglevel attribute to logging.DEBUG.
Can apply to either a TestCase or an individual test method."""
target.loglevel = logging.DEBUG
return target