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# -*- coding: utf-8 -*-
#
# SelfTest/st_common.py: Common functions for SelfTest modules
#
# Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""Common functions for SelfTest modules"""
__revision__ = "$Id$"
import unittest
import binascii
import sys
if sys.version_info[0] == 2 and sys.version_info[1] == 1:
from Crypto.Util.py21compat import *
from Crypto.Util.py3compat import *
class _list_testloader(unittest.TestLoader):
suiteClass = list
def list_test_cases(class_):
"""Return a list of TestCase instances given a TestCase class
This is useful when you have defined test* methods on your TestCase class.
"""
return _list_testloader().loadTestsFromTestCase(class_)
def strip_whitespace(s):
"""Remove whitespace from a text or byte string"""
if isinstance(s,str):
return b("".join(s.split()))
else:
return b("").join(s.split())
def a2b_hex(s):
"""Convert hexadecimal to binary, ignoring whitespace"""
return binascii.a2b_hex(strip_whitespace(s))
def b2a_hex(s):
"""Convert binary to hexadecimal"""
# For completeness
return binascii.b2a_hex(s)
def handle_fastmath_import_error():
import Crypto.PublicKey
import imp
try:
file, pathname, description = imp.find_module("_fastmath", Crypto.PublicKey.__path__)
except ImportError:
sys.stderr.write("SelfTest: warning: not testing _fastmath module (not available)\n")
else:
file.close()
raise ImportError("While the _fastmath module exists, importing "
"it failed. This may point to the gmp or mpir shared library "
"not being in the path. _fastmath was found at %s" % (pathname,))
def docstrings_disabled():
"""Returns True if docstrings are disabled (e.g. by using python -OO)"""
return docstrings_disabled.__doc__ is None
def assert_disabled():
"""Returns True if 'assert' is a no-op (e.g. by using python -O)"""
try:
assert False
except AssertionError:
return False
else:
return True
# vim:set ts=4 sw=4 sts=4 expandtab:
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