[Python-Dev] test_zlib.py suggestion

[Michael]

On 01/08/2018 18:03, Brett Cannon wrote:
> Open an issue as this will surely get forgotten otherwise, then people can
> discuss on the issue how to handle this.
Will do. I have more homework - as I just tested AIX 7.1 TL5 as a build 
system. The good news is libz.a is finally updated to something newer. 
The bad news is they introduced libreadline-6, with no support, and that 
it seems it going to be difficult to get it to link.

I so wish they would include "include files" with these standard 
libraries. Not doing so is one of the reasons things break - either 
double files, overwriting files and/or mixed versions. Sigh.
> 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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