Re: What's cooking in git.git (May 2013, #05; Mon, 20)

[Junio C Hamano <gitster@pobox.com>]

Thomas Rast <trast@inf.ethz.ch> writes:

> Junio C Hamano <gitster@pobox.com> writes:
>
>> * tr/test-v-and-v-subtest-only (2013-05-16) 6 commits
>>  - test-lib: support running tests under valgrind in parallel
>>  - test-lib: allow prefixing a custom string before "ok N" etc.
>>  - test-lib: valgrind for only tests matching a pattern
>>  - test-lib: verbose mode for only tests matching a pattern
>>  - test-lib: refactor $GIT_SKIP_TESTS matching
>>  - test-lib: enable MALLOC_* for the actual tests
>>
>>  Allows N instances of tests run in parallel, each running 1/N parts
>>  of the test suite under Valgrind, to speed things up.
>>
>>  The tip one may be useful in practice but is a tad ugly ;-)
>
> I was hoping for some success stories ;-)
>
> I think Peff (who I stupidly managed to not Cc in the series, there's
> another git-send-email usability issue there) asked for the third from
> the tip, which lets you run valgrind only on a certain test.  (For

Yes, I think that that change is a very good thing to do.

> example, if you've already had two coffees while your computer found out
> which test it was, this is a much faster way of seeing if the failure
> disappeared.)
>
> So one obvious way of going forward is cooking this for a while and
> seeing whether people find the one-test-only or the massively-parallel
> feature useful (or maybe both).
>
> [To anyone who just reads this, but did not see the original series, I
> should also point out that this only applies within a tNNNN-foo.sh test
> file.  You can already parallelize a full valgrind test run much better
> than the above.]