94 lines
3.0 KiB
Python
94 lines
3.0 KiB
Python
# Mocking library for module and code injection, replay tests and other
|
|
# unit testing purposes
|
|
#
|
|
# Copyright (C) 2010
|
|
# Red Hat, Inc. All rights reserved.
|
|
#
|
|
# This program 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; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# 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, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# Author(s): Martin Sivak <msivak@redhat.com>
|
|
|
|
|
|
from disk import *
|
|
from mock import *
|
|
import unittest
|
|
|
|
def slow(f):
|
|
"""Decorates a test method as being slow, usefull for python-nose filtering"""
|
|
f.slow = True
|
|
return f
|
|
|
|
def acceptance(f):
|
|
"""Decorates test as belonging to acceptance testing and not useable in common devellopment unit testing. To be used with python-nose filtering."""
|
|
f.acceptance = True
|
|
return f
|
|
|
|
class TestCase(unittest.TestCase):
|
|
def __init__(self, *args, **kwargs):
|
|
unittest.TestCase.__init__(self, *args, **kwargs)
|
|
self.injectedModules = {}
|
|
|
|
def setupModules(self, a):
|
|
"""Mock specified list of modules and store the list so it can be
|
|
properly unloaded during tearDown"""
|
|
|
|
import sys
|
|
self.preexistingModules = set(sys.modules.keys())
|
|
|
|
for m in a:
|
|
sys.modules[m] = Mock()
|
|
self.injectedModules[m] = sys.modules[m]
|
|
|
|
def modifiedModule(self, mname, mod = None):
|
|
"""Mark module (and all it's parents) as tainted"""
|
|
|
|
oldname=""
|
|
for m in mname.split("."):
|
|
self.injectedModules[oldname+m] = mod
|
|
oldname += m + "."
|
|
self.injectedModules[mname] = mod
|
|
|
|
def tearDownModules(self):
|
|
"""Unload previously Mocked modules"""
|
|
|
|
import sys
|
|
|
|
for m in sys.modules.keys():
|
|
if m in self.preexistingModules and not m in self.injectedModules:
|
|
continue
|
|
|
|
del sys.modules[m]
|
|
|
|
def take_over_io(self, disk, target_module):
|
|
""" Trick target_module into using disk object as the filesystem.
|
|
|
|
This is achieved by overriding the module's 'open' binding as well
|
|
as many global bindings in os.path.
|
|
"""
|
|
target_module.open = disk.open
|
|
self.modifiedModule(target_module.__name__)
|
|
|
|
import glob
|
|
self.modifiedModule("glob")
|
|
glob.glob = disk.glob_glob
|
|
|
|
import os
|
|
self.modifiedModule("os.path")
|
|
# this is what os.path implementaion points at, reimport:
|
|
import posixpath
|
|
self.modifiedModule("posixpath")
|
|
os.listdir = disk.os_listdir
|
|
os.path.exists = disk.os_path_exists
|
|
os.path.isdir = disk.os_path_isdir
|
|
os.access = disk.os_access |