From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 25 Jan 2013 18:34:56 GMT
Subject: Re: [PATCH] t9902: protect test from stray build artifacts
Message-ID: <7v1ud95cxb.fsf@alter.siamese.dyndns.org>
In-Reply-To: <20130125042326.GA31281@sigill.intra.peff.net>

Jeff King <peff@peff.net> writes:

> On Thu, Jan 24, 2013 at 08:19:30PM -0800, Junio C Hamano wrote:
>
>> > Ahh, ok, we show one element per line and just make sure "bundle"
>> > is there, and we do not care what other buns appear in the output.
>> >
>> Not so quick, though.  The lower level "read from help -a" is only
>> run once and its output kept in a two-level cache hierarchy; we need
>> to reset both.
>
> Ugh, I didn't even think about that.
>
> I wonder if it would be simpler if the completion tests actually ran a
> new bash for each test. That would be slower, but it somehow seems
> cleaner.

I agree 100% with that.  Let's leave this fix as-is, at least as a
tentative fix while "git check-ignore" graduates into the upcoming
release, and let somebody who is interested work on an update to
this test script to do so as an independent topic.


>
>> It starts to look a bit too intimately tied to the implementation of
>> what is being tested for my taste, though.
>> [...]
>> +test_expect_success 'help -a read correctly by command list generator' '
>> +	__git_all_commands= &&
>> +	__git_porcelain_commands= &&
>> +	GIT_TESTING_COMMAND_COMPLETION= &&
>> +	run_completion "git bun" &&
>> +	grep "^bundle $" out
>> +'
>
> Agreed. I could take or leave it at this point. It's nice to check that
> changes to "help -a" will not break it, but ultimately it feels a bit
> too contrived to catch anything useful.
>
> -Peff