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# -*- encoding: utf-8 -*-
from __future__ import unicode_literals
try:
import unittest2 as unittest
except ImportError:
import unittest
from isso import config
from isso.compat import PY2K, string_types
from isso.utils.hash import Hash, PBKDF2, new
class TestHasher(unittest.TestCase):
def test_hash(self):
self.assertRaises(TypeError, Hash, "Foo")
self.assertEqual(Hash(b"").salt, b"")
self.assertEqual(Hash().salt, Hash.salt)
h = Hash(b"", func=None)
self.assertRaises(TypeError, h.hash, "...")
self.assertEqual(h.hash(b"..."), b"...")
self.assertIsInstance(h.uhash(u"..."), string_types)
@unittest.skipIf(PY2K, "byte/str quirks")
def test_uhash(self):
h = Hash(b"", func=None)
self.assertRaises(TypeError, h.uhash, b"...")
class TestPBKDF2(unittest.TestCase):
def test_default(self):
pbkdf2 = PBKDF2(iterations=1000) # original setting (and still default)
self.assertEqual(pbkdf2.uhash(""), "42476aafe2e4")
def test_different_salt(self):
a = PBKDF2(b"a", iterations=1)
b = PBKDF2(b"b", iterations=1)
self.assertNotEqual(a.hash(b""), b.hash(b""))
class TestCreate(unittest.TestCase):
def test_custom(self):
def _new(val):
conf = config.new({
"hash": {
"algorithm": val,
"salt": ""
}
})
return new(conf.section("hash"))
sha1 = _new("sha1")
self.assertIsInstance(sha1, Hash)
self.assertEqual(sha1.func, "sha1")
self.assertRaises(ValueError, _new, "foo")
pbkdf2 = _new("pbkdf2:16")
self.assertIsInstance(pbkdf2, PBKDF2)
self.assertEqual(pbkdf2.iterations, 16)
pbkdf2 = _new("pbkdf2:16:2:md5")
self.assertIsInstance(pbkdf2, PBKDF2)
self.assertEqual(pbkdf2.dklen, 2)
self.assertEqual(pbkdf2.func, "md5")
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