mirror of https://github.com/python/cpython
67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
"""
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Test suite to check compilance with PEP 247, the standard API
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for hashing algorithms
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"""
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import hmac
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import unittest
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from hashlib import md5, sha1, sha224, sha256, sha384, sha512
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class Pep247Test(unittest.TestCase):
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def check_module(self, module, key=None):
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self.assertTrue(hasattr(module, 'digest_size'))
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self.assertTrue(module.digest_size is None or module.digest_size > 0)
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self.check_object(module.new, module.digest_size, key)
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def check_object(self, cls, digest_size, key, digestmod=None):
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if key is not None:
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if digestmod is None:
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digestmod = md5
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obj1 = cls(key, digestmod=digestmod)
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obj2 = cls(key, b'string', digestmod=digestmod)
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h1 = cls(key, b'string', digestmod=digestmod).digest()
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obj3 = cls(key, digestmod=digestmod)
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obj3.update(b'string')
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h2 = obj3.digest()
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else:
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obj1 = cls()
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obj2 = cls(b'string')
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h1 = cls(b'string').digest()
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obj3 = cls()
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obj3.update(b'string')
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h2 = obj3.digest()
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self.assertEqual(h1, h2)
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self.assertTrue(hasattr(obj1, 'digest_size'))
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if digest_size is not None:
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self.assertEqual(obj1.digest_size, digest_size)
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self.assertEqual(obj1.digest_size, len(h1))
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obj1.update(b'string')
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obj_copy = obj1.copy()
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self.assertEqual(obj1.digest(), obj_copy.digest())
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self.assertEqual(obj1.hexdigest(), obj_copy.hexdigest())
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digest, hexdigest = obj1.digest(), obj1.hexdigest()
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hd2 = ""
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for byte in digest:
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hd2 += '%02x' % byte
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self.assertEqual(hd2, hexdigest)
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def test_md5(self):
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self.check_object(md5, None, None)
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def test_sha(self):
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self.check_object(sha1, None, None)
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self.check_object(sha224, None, None)
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self.check_object(sha256, None, None)
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self.check_object(sha384, None, None)
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self.check_object(sha512, None, None)
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def test_hmac(self):
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self.check_module(hmac, key=b'abc')
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if __name__ == '__main__':
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unittest.main()
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