[openssl-dev] Travis [extended tests] tag

[Andy Polyakov]

>> In order to improve CI turn-around times Travis config in master branch
>> was tweaked to minimize the time it takes to process pull requests. This
>> is done by "short-circuiting" most expensive tests: sanitizers,
>> coverage, wine-based tests. Thing to keep in mind is that
>> "short-circuited" test come out as passed/green. Rationale is that if
>> minimum tests pass, the build should still be marked green on github.
>> Even though it gives somewhat deceiving picture, in sense that you get
>> green check mark for test that might have failed otherwise. Expensive
>> tests are marked with "EXTENDED_TEST=yes" on the build page, and one can
>> easily see if it was skipped by looking at time it took to skip it, it
>> should be ~1 minute.
>>
>> At the same time it would be inappropriate to deny the mere possibility
>> to exercise complete test set even on per-pull-request basis. [Note that
>> complete tests are always executed for each repo-push.] For this reason
>> possibility to "opt-in" for expensive tests was arranged by adding
>> "[extended tests]" tag to *last* commit. If forgotten (in case you
>> reckoned that request is "worthy" extended tests), or claimed desired
>> afterwards, it's possible to simply amend the last commit, add the tag
>> and force push. In such case minimal tests would be effectively wasted
>> (because they will be executed twice), but overall it should still be
>> resource saving, since majority of pull requests won't require extended
>> testing.
>>
>> And in the context it's worth keeping in mind that it's possible to skip
>> CI tests altogether by tagging commit with "[skip ci]". This option is
>> appropriate for commentary or documentation typo fixes, readme updates,
>> non-x86 code updates...
> 
> Can you explain how to tag it?

Oh! Just add it anywhere in commit message, or even subject line. There
is only one thing that is essential, it can't be broken between multiple
lines. In the nutshell [extented tests] (or [skip ci]) has to be
grep-able, that's all.