The FreeBSD 2.7 buildbot is failing because of test_ssl:

test test_ssl failed -- Traceback (most recent call last):
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/test/test_ssl.py", line 1005, in test_load_dh_params
    shutil.copy(DHFILE, fname)
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/shutil.py", line 131, in copy
    if os.path.isdir(dst):
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/genericpath.py", line 49, in isdir
    st = os.stat(s)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe4' in position 18: ordinal not in range(128)

======================================================================
ERROR: test_load_dh_params (test.test_ssl.ContextTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/test/test_ssl.py", line 1005, in test_load_dh_params
    shutil.copy(DHFILE, fname)
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/shutil.py", line 131, in copy
    if os.path.isdir(dst):
  File "/usr/home/buildbot/python/2.7.koobs-freebsd10/build/Lib/genericpath.py", line 49, in isdir
    st = os.stat(s)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe4' in position 18: ordinal not in range(128)


test.pythoninfo:

* os.cwd: /usr/home/buildbot/python/2.7.koobs-freebsd10/build
* sys.filesystem_encoding: US-ASCII


The failure is likely related to the commit 6e8f395001b026daea047cf225dcca5a973ae824, bpo-25404:
---
commit 6e8f395001b026daea047cf225dcca5a973ae824
Author: Christian Heimes <christian@python.org>
Date:   Sun Feb 25 09:48:02 2018 +0100

    bpo-25404: SSLContext.load_dh_params() non-ASCII path (GH-3459)
    
    SSLContext.load_dh_params() now supports non-ASCII path.
    
    Signed-off-by: Christian Heimes <christian@python.org>
---


Maybe the test should be skipped if the filesystem encoding cannot encode the path?

The issue is not specific to FreeBSD, it depends on the locale (on the Python filesystem encoding).

I reproduced the issue on Linux:

vstinner@apu$ LC_ALL=C ./python -m test test_ssl
Run tests sequentially
0:00:00 load avg: 0.27 [1/1] test_ssl
test test_ssl failed -- Traceback (most recent call last):
  File "/home/vstinner/prog/python/2.7/Lib/test/test_ssl.py", line 1005, in test_load_dh_params
    shutil.copy(DHFILE, fname)
  File "/home/vstinner/prog/python/2.7/Lib/shutil.py", line 131, in copy
    if os.path.isdir(dst):
  File "/home/vstinner/prog/python/2.7/Lib/genericpath.py", line 49, in isdir
    st = os.stat(s)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe4' in position 18: ordinal not in range(128)

1 test failed:
    test_ssl

Total duration: 1 sec
Tests result: FAILURE

Oh. I approved the PR but it's not merged yet :-/

New changeset 19f6bd06af3c7fc0db5f96878aaa68f5589ff13e by Victor Stinner (Pablo Galindo) in branch '2.7':
bpo-33354: Fix test_ssl when a filename cannot be encoded (GH-6613)
https://github.com/python/cpython/commit/19f6bd06af3c7fc0db5f96878aaa68f5589ff13e

Thanks Pablo for your fix!