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#!/usr/bin/env python
import unittest, random, math
from pwdsphinx import bin2pass
# to get coverage, run
# PYTHONPATH=.. coverage run ../tests/pass2bin.py
# coverage report -m
# to just run the tests do
# python3 -m unittest discover --start-directory ../tests
class TestRules(unittest.TestCase):
def test_invert_simple(self):
target = "this is a pass2bin test string"
rwd, classes, symbols = bin2pass.pass2bin(target)
self.assertEqual(bin2pass.derive(rwd, classes, len(target), symbols), target)
def test_invert_too_long(self):
target = "this is a pass2bin test stringthis is a pass2bin test stringthis is a pass2bin test stringthis is a pass2bin test stringthis is a pass2bin test string"
self.assertRaises(OverflowError, bin2pass.pass2bin, target)
def test_invert_iter(self):
chars = bin2pass.allchars
for i in range(1,len(chars)):
target=''.join(chars[:i])
try:
rwd, classes, symbols = bin2pass.pass2bin(target)
except OverflowError:
break
self.assertEqual(bin2pass.derive(rwd, classes, len(target), symbols), target)
def test_invert_reviter(self):
chars = bin2pass.allchars
for i in range(1,len(chars)):
target=''.join(chars[-i:])
try:
rwd,classes, symbols = bin2pass.pass2bin(target)
except OverflowError:
break
self.assertEqual(bin2pass.derive(rwd, classes, len(target), symbols), target)
def test_invert_random(self):
chars = bin2pass.allchars
for _ in range(1000):
target=''.join(random.choices(chars,k=random.randrange(1,39)))
rwd,classes, symbols = bin2pass.pass2bin(target)
self.assertEqual(bin2pass.derive(rwd, classes, len(target), symbols), target)
def test_all_zeroes(self):
logbase = int(math.log(1<<256, len(bin2pass.allchars)))
target = bin2pass.allchars[0] * (logbase-1) + bin2pass.allchars[1]
for _ in range(logbase):
rwd,classes, symbols = bin2pass.pass2bin(target)
self.assertEqual(bin2pass.derive(rwd, classes, len(target), symbols), target)
target = target[1:]+bin2pass.allchars[0]
def test_short_zeroes(self):
logbase = int(math.log(1<<256, len(bin2pass.allchars)))
target = bin2pass.allchars[0] * (logbase//2) + bin2pass.allchars[1]
for _ in range(len(target)):
ctarget = ''.join(target)
(rwd,classes,symbols) = bin2pass.pass2bin(ctarget)
self.assertEqual(bin2pass.derive(rwd, classes, len(ctarget), symbols), ctarget)
target = target[1:]+bin2pass.allchars[0]
if __name__ == '__main__':
unittest.main()
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