[Python-Dev] test_zlib.py suggestion

Brett Cannon brett at python.org
Wed Aug 1 12:03:53 EDT 2018

Open an issue as this will surely get forgotten otherwise, then people can
discuss on the issue how to handle this.

On Wed, 1 Aug 2018 at 08:40 Michael <aixtools at felt.demon.nl> wrote:

> I have a build_bot running (yeah me!), and was surprised to see
> test_zlib fail on AIX.
> There is not an issue with test_zlib, but I do have a suggestion.
> I was getting an error with test_flushes(). On python2-2.7.15 the test
> passes and in python3-3.8 (and earlier I expect) the test fails. The
> difference is the addition of the two modes 'Z_PARTIAL_FLUSH' and 'Z_BLOCK'
> sync_opt = ['Z_NO_FLUSH', 'Z_SYNC_FLUSH', 'Z_FULL_FLUSH',
>              'Z_PARTIAL_FLUSH', 'Z_BLOCK']
> On default AIX installs zlib is, sadly, still at version 1.2.3 and
> Z_BLOCK was 'improved' in version 1.2.5. And it fails on Z_BLOCK.
> My suggestion is to enhance the test_library_version() so that it
> verifies that the minor (or smaller?) number is at least '5'
> When I static link python with zlib-1.2.11 then the test_zlib passes all
> sub-tests.
> Again, not a python bug - but a suggestion for improving what is tested.
> I can open an issue, and with a bit of assistance/interest from others
> I'll even do a PR.
> Michael
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