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depot_tools/tests/super_mox.py

92 lines
3.0 KiB
Python

#!/usr/bin/python
# Copyright (c) 2009 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Simplify unit tests based on pymox."""
import os
import random
import string
mox = None
def OnTestsLoad():
import sys
old_path = sys.path
global mox
try:
directory, _file = os.path.split(__file__)
sys.path.append(os.path.abspath(os.path.join(directory, 'pymox')))
sys.path.append(os.path.abspath(os.path.join(directory, '..')))
try:
import mox as Mox
mox = Mox
except ImportError:
print "Trying to automatically checkout pymox."
import subprocess
subprocess.call(['svn', 'co', 'http://pymox.googlecode.com/svn/trunk',
os.path.join(directory, 'pymox')],
shell=sys.platform.startswith('win'))
try:
import pymox.mox as Mox
mox = Mox
except ImportError:
print >> sys.stderr, ("\nError, failed to load pymox\n")
raise
finally:
# Restore the path
sys.path = old_path
# Automatically fetch pymox.
OnTestsLoad()
class SuperMoxTestBase(mox.MoxTestBase):
# Backup the separator in case it gets mocked
_OS_SEP = os.sep
_RANDOM_CHOICE = random.choice
_RANDOM_RANDINT = random.randint
_STRING_LETTERS = string.letters
## Some utilities for generating arbitrary arguments.
def String(self, max_length):
return ''.join([self._RANDOM_CHOICE(self._STRING_LETTERS)
for x in xrange(self._RANDOM_RANDINT(1, max_length))])
def Strings(self, max_arg_count, max_arg_length):
return [self.String(max_arg_length) for x in xrange(max_arg_count)]
def Args(self, max_arg_count=8, max_arg_length=16):
return self.Strings(max_arg_count,
self._RANDOM_RANDINT(1, max_arg_length))
def _DirElts(self, max_elt_count=4, max_elt_length=8):
return self._OS_SEP.join(self.Strings(max_elt_count, max_elt_length))
def Dir(self, max_elt_count=4, max_elt_length=8):
return (self._RANDOM_CHOICE((self._OS_SEP, '')) +
self._DirElts(max_elt_count, max_elt_length))
def Url(self, max_elt_count=4, max_elt_length=8):
return ('svn://random_host:port/a' +
self._DirElts(max_elt_count, max_elt_length
).replace(self._OS_SEP, '/'))
def RootDir(self, max_elt_count=4, max_elt_length=8):
return self._OS_SEP + self._DirElts(max_elt_count, max_elt_length)
def compareMembers(self, object, members):
"""If you add a member, be sure to add the relevant test!"""
# Skip over members starting with '_' since they are usually not meant to
# be for public use.
actual_members = [x for x in sorted(dir(object))
if not x.startswith('_')]
expected_members = sorted(members)
if actual_members != expected_members:
diff = ([i for i in actual_members if i not in expected_members] +
[i for i in expected_members if i not in actual_members])
print diff
self.assertEqual(actual_members, expected_members)