Re: [PATCH] t9902: protect test from stray build artifacts

[Jeff King <peff@peff.net>]

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.

> 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