[Python-checkins] bpo-40637: Don't test builtin PBKDF2 without builtin hashes (GH-20980)
tiran
webhook-mailer at python.org
Tue Nov 17 09:40:39 EST 2020
https://github.com/python/cpython/commit/975022b77b0024ea1548f19d5f91aba5ba1eed59
commit: 975022b77b0024ea1548f19d5f91aba5ba1eed59
branch: master
author: Christian Heimes <christian at python.org>
committer: tiran <christian at python.org>
date: 2020-11-17T15:40:35+01:00
summary:
bpo-40637: Don't test builtin PBKDF2 without builtin hashes (GH-20980)
Skip testing of pure Python PBKDF2 when one or more builtin hash module
is not available. Otherwise the import of hashlib prints noise on
stderr.
Signed-off-by: Christian Heimes <christian at python.org>
files:
M Lib/test/test_hashlib.py
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
index 4551011f5ca9e..f50a4559269d7 100644
--- a/Lib/test/test_hashlib.py
+++ b/Lib/test/test_hashlib.py
@@ -26,17 +26,26 @@
# Were we compiled --with-pydebug or with #define Py_DEBUG?
COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount')
-c_hashlib = import_fresh_module('hashlib', fresh=['_hashlib'])
-py_hashlib = import_fresh_module('hashlib', blocked=['_hashlib'])
-
+# default builtin hash module
+default_builtin_hashes = {'md5', 'sha1', 'sha256', 'sha512', 'sha3', 'blake2'}
+# --with-builtin-hashlib-hashes override
builtin_hashes = sysconfig.get_config_var("PY_BUILTIN_HASHLIB_HASHES")
if builtin_hashes is None:
- builtin_hashes = {'md5', 'sha1', 'sha256', 'sha512', 'sha3', 'blake2'}
+ builtin_hashes = default_builtin_hashes
else:
builtin_hashes = {
m.strip() for m in builtin_hashes.strip('"').lower().split(",")
}
+# hashlib with and without OpenSSL backend for PBKDF2
+# only import builtin_hashlib when all builtin hashes are available.
+# Otherwise import prints noise on stderr
+openssl_hashlib = import_fresh_module('hashlib', fresh=['_hashlib'])
+if builtin_hashes == default_builtin_hashes:
+ builtin_hashlib = import_fresh_module('hashlib', blocked=['_hashlib'])
+else:
+ builtin_hashlib = None
+
try:
from _hashlib import HASH, HASHXOF, openssl_md_meth_names
except ImportError:
@@ -1032,16 +1041,16 @@ def _test_pbkdf2_hmac(self, pbkdf2, supported):
iterations=1, dklen=None)
self.assertEqual(out, self.pbkdf2_results['sha1'][0][0])
+ @unittest.skipIf(builtin_hashlib is None, "test requires builtin_hashlib")
def test_pbkdf2_hmac_py(self):
- self._test_pbkdf2_hmac(py_hashlib.pbkdf2_hmac, builtin_hashes)
+ self._test_pbkdf2_hmac(builtin_hashlib.pbkdf2_hmac, builtin_hashes)
- @unittest.skipUnless(hasattr(c_hashlib, 'pbkdf2_hmac'),
+ @unittest.skipUnless(hasattr(openssl_hashlib, 'pbkdf2_hmac'),
' test requires OpenSSL > 1.0')
def test_pbkdf2_hmac_c(self):
- self._test_pbkdf2_hmac(c_hashlib.pbkdf2_hmac, openssl_md_meth_names)
-
+ self._test_pbkdf2_hmac(openssl_hashlib.pbkdf2_hmac, openssl_md_meth_names)
- @unittest.skipUnless(hasattr(c_hashlib, 'scrypt'),
+ @unittest.skipUnless(hasattr(hashlib, 'scrypt'),
' test requires OpenSSL > 1.1')
def test_scrypt(self):
for password, salt, n, r, p, expected in self.scrypt_test_vectors:
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