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# This file is part of Buildbot.  Buildbot is free software: you can 

# redistribute it and/or modify it under the terms of the GNU General Public 

# License as published by the Free Software Foundation, version 2. 

# 

# This program is distributed in the hope that it will be useful, but WITHOUT 

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 

# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 

# details. 

# 

# You should have received a copy of the GNU General Public License along with 

# this program; if not, write to the Free Software Foundation, Inc., 51 

# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 

# 

# Copyright Buildbot Team Members 

 

import sys 

import twisted 

from twisted.trial import unittest 

 

def add_debugging_monkeypatches(): 

    """ 

    DO NOT CALL THIS DIRECTLY 

 

    This adds a few "harmless" monkeypatches which make it easier to debug 

    failing tests.  It is called automatically by buildbot.test.__init__. 

    """ 

    from twisted.application.service import Service 

    old_startService = Service.startService 

    old_stopService = Service.stopService 

    def startService(self): 

        assert not self.running 

        return old_startService(self) 

    def stopService(self): 

        assert self.running 

        return old_stopService(self) 

    Service.startService = startService 

    Service.stopService = stopService 

 

    # versions of Twisted before 9.0.0 did not have a UnitTest.patch that worked 

    # on Python-2.7 

    if twisted.version.major <= 9 and sys.version_info[:2] == (2,7): 

        def nopatch(self, *args): 

            raise unittest.SkipTest('unittest.TestCase.patch is not available') 

        unittest.TestCase.patch = nopatch