def test_password_metrics(self):
metrics = passwordmetrics.metrics('correcthorseb!wdbatterystaplerWd3t')
self.assertEqual(metrics['words'], {'et', 'stapler', 'i', 'correct', 'battery', 'horse'})
self.assertEqual(metrics['used_groups'], {'uppercase', 'lowercase', 'punctuation', 'digits'})
self.assertEqual(metrics['unused_groups'], {'non-printable', 'whitespace', 'other'})
self.assertEqual(metrics['length'], 34)
self.assertAlmostEqual(metrics['entropy'], 101.57032841892621)
self.assertAlmostEqual(metrics['word_entropy'], 62.24279530886037)
self.assertAlmostEqual(metrics['character_entropy'], 39.32753311006583)
metrics = passwordmetrics.metrics('b4naNAf!ddler')
self.assertEqual(metrics['words'], {'banana', 'fiddler'})
self.assertEqual(metrics['used_groups'], {'uppercase', 'lowercase', 'punctuation', 'digits'})
self.assertEqual(metrics['unused_groups'], {'non-printable', 'whitespace', 'other'})
self.assertEqual(metrics['length'], 13)
self.assertAlmostEqual(metrics['entropy'], 40.37060138599877)
self.assertAlmostEqual(metrics['word_entropy'], 29.585966540441248)
self.assertAlmostEqual(metrics['character_entropy'], 10.784634845557521)
# Repeated words do not increase entropy
# (Although they probably should add 1)
self.assertEqual(passwordmetrics.metrics('battery')['entropy'],
passwordmetrics.metrics('batterybattery')['entropy'])
# Repeated substitutions do not increase entropy:
self.assertEqual(passwordmetrics.metrics('b4tterybattery')['entropy'],
passwordmetrics.metrics('b4tteryb4ttery')['entropy'])
# Differenty substitutions *do' not increase entropy:
self.assertNotEqual(passwordmetrics.metrics('b4tteryb4ttery')['entropy'],
passwordmetrics.metrics('b4ttery84ttery')['entropy'])
def test_substitutions(self):
# This long password gets a reasonable score on characters alone
self.assertAlmostEqual(passwordmetrics._character_entropy('Tr0ub4dor&3')[0], 65.54588851677637)
# But much worse when considering it uses a word, even though it's misspelled and only
# appears once in the whole corpus (because I put it there).
self.assertAlmostEqual(passwordmetrics.metrics('Tr0ub4dor&3')['entropy'], 42.11714046349914)
# Although still better than if there was no substitutions in the word
self.assertAlmostEqual(passwordmetrics.metrics('Troubador&3')['entropy'], 31.332505617941614)
words, rest = passwordmetrics._find_words('batterybattery', self.words)
self.assertEquals(rest, '')
words, rest = passwordmetrics._find_words('b4tteryb4ttery', self.words)
self.assertEquals(rest, '4')
words, rest = passwordmetrics._find_words('b4ttery8attery', self.words)
self.assertEquals(rest, '48')
def test_custom_wordlist(self):
# You might want to include non-english words in the word list.
words = {}
# Open a toy wordlist
with open('docs/ordlista_sv.txt', 'rt', encoding='latin-1') as wordlist:
for line in wordlist.readlines():
word, entropy = line.strip().split(' ')
words[word] = float(entropy)
passwordmetrics.configure(words=words)
# It won't find English words
res = passwordmetrics.metrics('correcthorsebatterystapler')
self.assertEqual(res['words'], set())
# It will find some Swedish words
res = passwordmetrics.metrics('korrekthästbatterihäftapparat')
self.assertEqual(res['words'], set([u'batteri', u'korrekt', u'h\xe4ftapparat', u'h\xe4st']))
def test_password_entropy(self):
self.assertAlmostEqual(passwordmetrics.metrics('abcdefgh')['entropy'], 36.7646671442273)
self.assertAlmostEqual(passwordmetrics.metrics('xyFg98%!')['entropy'], 55.49709479680921)
self.assertAlmostEqual(passwordmetrics.metrics('correcthorsebatterystaple')['entropy'], 45.58216824444706)