bpo-17258: Add requires_hashdigest to multiprocessing tests

[tiran]

Skip some :mod:multiprocessing tests when MD5 hash digest is blocked.

Signed-off-by: Christian Heimes christian@python.org

https://bugs.python.org/issue17258

Automerge-Triggered-By: @tiran

[vstinner]

I tested the fix manually: it works! I removed md5 support, test_multiprocessing_spawn and test_concurrent_futures pass as expected.

Remove MD5 support, remove the builtin md5 module:

find -name "*md5*.so" -delete

Apply patch:

diff --git a/Lib/hashlib.py b/Lib/hashlib.py
index 1b6e50247c..0ec64e1a5f 100644
--- a/Lib/hashlib.py
+++ b/Lib/hashlib.py
@@ -55,7 +55,7 @@ More condensed:
 
 # This tuple and __get_builtin_constructor() must be modified if a new
 # always available algorithm is added.
-__always_supported = ('md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512',
+__always_supported = ('sha1', 'sha224', 'sha256', 'sha384', 'sha512',
                       'blake2b', 'blake2s',
                       'sha3_224', 'sha3_256', 'sha3_384', 'sha3_512',
                       'shake_128', 'shake_256')
diff --git a/Lib/test/support/hashlib_helper.py b/Lib/test/support/hashlib_helper.py
index a28132a565..a2bb7ee187 100644
--- a/Lib/test/support/hashlib_helper.py
+++ b/Lib/test/support/hashlib_helper.py
@@ -29,7 +29,7 @@ def requires_hashdigest(digestname, openssl=None, usedforsecurity=True):
                     _hashlib.new(digestname, usedforsecurity=usedforsecurity)
                 else:
                     hashlib.new(digestname, usedforsecurity=usedforsecurity)
-            except ValueError:
+            except (ValueError, AttributeError):
                 raise unittest.SkipTest(
                     f"hash digest '{digestname}' is not available."
                 )
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index 0b2ef95a6f..7fa876d565 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -1842,7 +1842,6 @@ static struct PyMethodDef EVP_functions[] = {
     _HASHLIB_GET_FIPS_MODE_METHODDEF
     _HASHLIB_HMAC_SINGLESHOT_METHODDEF
     _HASHLIB_HMAC_NEW_METHODDEF
-    _HASHLIB_OPENSSL_MD5_METHODDEF
     _HASHLIB_OPENSSL_SHA1_METHODDEF
     _HASHLIB_OPENSSL_SHA224_METHODDEF
     _HASHLIB_OPENSSL_SHA256_METHODDEF

[miss-islington]

Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

[miss-islington]

Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

[miss-islington]

Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

[vstinner]

I reported the miss-islington issue to python/miss-islington#342

[miss-islington]

Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

[bedevere-bot]

GH-20626 is a backport of this pull request to the 3.9 branch.