94 lines
3.0 KiB
Python
94 lines
3.0 KiB
Python
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# Mocking library for module and code injection, replay tests and other
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# unit testing purposes
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#
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# Copyright (C) 2010
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# Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author(s): Martin Sivak <msivak@redhat.com>
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from disk import *
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from mock import *
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import unittest
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def slow(f):
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"""Decorates a test method as being slow, usefull for python-nose filtering"""
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f.slow = True
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return f
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def acceptance(f):
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"""Decorates test as belonging to acceptance testing and not useable in common devellopment unit testing. To be used with python-nose filtering."""
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f.acceptance = True
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return f
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class TestCase(unittest.TestCase):
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def __init__(self, *args, **kwargs):
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unittest.TestCase.__init__(self, *args, **kwargs)
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self.injectedModules = {}
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def setupModules(self, a):
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"""Mock specified list of modules and store the list so it can be
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properly unloaded during tearDown"""
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import sys
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self.preexistingModules = set(sys.modules.keys())
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for m in a:
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sys.modules[m] = Mock()
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self.injectedModules[m] = sys.modules[m]
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def modifiedModule(self, mname, mod = None):
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"""Mark module (and all it's parents) as tainted"""
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oldname=""
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for m in mname.split("."):
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self.injectedModules[oldname+m] = mod
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oldname += m + "."
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self.injectedModules[mname] = mod
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def tearDownModules(self):
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"""Unload previously Mocked modules"""
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import sys
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for m in sys.modules.keys():
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if m in self.preexistingModules and not m in self.injectedModules:
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continue
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del sys.modules[m]
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def take_over_io(self, disk, target_module):
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""" Trick target_module into using disk object as the filesystem.
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This is achieved by overriding the module's 'open' binding as well
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as many global bindings in os.path.
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"""
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target_module.open = disk.open
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self.modifiedModule(target_module.__name__)
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import glob
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self.modifiedModule("glob")
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glob.glob = disk.glob_glob
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import os
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self.modifiedModule("os.path")
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# this is what os.path implementaion points at, reimport:
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import posixpath
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self.modifiedModule("posixpath")
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os.listdir = disk.os_listdir
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os.path.exists = disk.os_path_exists
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os.path.isdir = disk.os_path_isdir
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os.access = disk.os_access
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