test_hashlib fails if _md5 is not built

[benjaminp]

BPO	32721
Nosy	@benjaminp
PRs	bpo-32721: do not fail test_hashlib if _md5 isn't available #5441 [3.6] closes bpo-32721: do not fail test_hashlib if _md5 isn't available (GH-5441) #5442

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2018-01-30.06:14:20.342>
created_at = <Date 2018-01-30.05:29:15.251>
labels = ['build', '3.7']
title = 'test_hashlib fails if _md5 is not built'
updated_at = <Date 2018-01-30.07:01:34.600>
user = 'https://github.com/benjaminp'

bugs.python.org fields:

activity = <Date 2018-01-30.07:01:34.600>
actor = 'benjamin.peterson'
assignee = 'none'
closed = True
closed_date = <Date 2018-01-30.06:14:20.342>
closer = 'benjamin.peterson'
components = ['Build']
creation = <Date 2018-01-30.05:29:15.251>
creator = 'benjamin.peterson'
dependencies = []
files = []
hgrepos = []
issue_num = 32721
keywords = ['patch']
message_count = 3.0
messages = ['311233', '311241', '311245']
nosy_count = 1.0
nosy_names = ['benjamin.peterson']
pr_nums = ['5441', '5442']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue32721'
versions = ['Python 3.6', 'Python 3.7']

[benjaminp]

$ make
$ rm build/lib.linux-x86_64-3.7/_md5.cpython-37m-x86_64-linux-gnu.so 
$ ./python -m test test_hashlib
Run tests sequentially
0:00:00 load avg: 1.11 [1/1] test_hashlib
ERROR:root:code for hash md5 was not found.
Traceback (most recent call last):
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 243, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 113, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5
/home/benjamin/dev/python/cpython/Lib/test/test_hashlib.py:90: UserWarning: Did a C extension fail to compile? No module named '_md5'
  warnings.warn('Did a C extension fail to compile? %s' % error)
Warning -- logging._handlerList was modified by test_hashlib
  Before: (139817255081928, [<weakref at 0x7f29bdc02868; to '_StderrHandler' at 0x7f29bdbfeb70>, <weakref at 0x7f29ba4f71d8; to 'StreamHandler' at 0x7f29ba4ee8d0>], [<weakref at 0x7f29bdc02868; to '_StderrHandler' at 0x7f29bdbfeb70>])
  After:  (139817255081928, [<weakref at 0x7f29bdc02868; to '_StderrHandler' at 0x7f29bdbfeb70>, <weakref at 0x7f29ba4f71d8; to 'StreamHandler' at 0x7f29ba4ee8d0>], [<weakref at 0x7f29bdc02868; to '_StderrHandler' at 0x7f29bdbfeb70>, <weakref at 0x7f29ba4f71d8; to 'StreamHandler' at 0x7f29ba4ee8d0>]) 
test test_hashlib failed -- Traceback (most recent call last):
  File "/home/benjamin/dev/python/cpython/Lib/test/test_hashlib.py", line 209, in test_get_builtin_constructor
    constructor = get_builtin_constructor('md5')
  File "/home/benjamin/dev/python/cpython/Lib/hashlib.py", line 113, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5

test_hashlib failed

1 test failed:
test_hashlib

Total duration: 397 ms
Tests result: FAILURE

[benjaminp]

New changeset 9544180 by Benjamin Peterson in branch 'master':
closes bpo-32721: do not fail test_hashlib if _md5 isn't available (GH-5441)
9544180

[benjaminp]

New changeset 6b2bbcc by Benjamin Peterson (Miss Islington (bot)) in branch '3.6':
closes bpo-32721: do not fail test_hashlib if _md5 isn't available (GH-5441) (GH-5442)
6b2bbcc