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# -*- coding: utf-8 -*-
#
# SelfTest/Util/test_Counter: Self-test for the Crypto.Util.Counter module
#
# Written in 2009 by Dwayne C. Litzenberger <[email protected]>
#
# ===================================================================
# 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.
# ===================================================================
"""Self-tests for Crypto.Util.Counter"""
from Crypto.Util.py3compat import *
import unittest
class CounterTests(unittest.TestCase):
def setUp(self):
global Counter
from Crypto.Util import Counter
def test_BE(self):
"""Big endian"""
c = Counter.new(128)
c = Counter.new(128, little_endian=False)
def test_LE(self):
"""Little endian"""
c = Counter.new(128, little_endian=True)
def test_nbits(self):
c = Counter.new(nbits=128)
self.assertRaises(ValueError, Counter.new, 129)
def test_prefix(self):
c = Counter.new(128, prefix=b("xx"))
def test_suffix(self):
c = Counter.new(128, suffix=b("xx"))
def test_iv(self):
c = Counter.new(128, initial_value=2)
self.assertRaises(ValueError, Counter.new, 16, initial_value=0x1FFFF)
def get_tests(config={}):
from Crypto.SelfTest.st_common import list_test_cases
return list_test_cases(CounterTests)
if __name__ == '__main__':
suite = lambda: unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')
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