Re: [PATCH RESEND] t/perf: do not run tests in user's $SHELL

[Johannes Altmanninger <aclopte@gmail.com>]

On Mon, Dec 20, 2021 at 12:56:58PM +0100, Ævar Arnfjörð Bjarmason wrote:
> 
> On Mon, Dec 20 2021, René Scharfe wrote:
> 
> > From: Johannes Altmanninger <aclopte@gmail.com>
> >
> > The environment variable $SHELL is usually set to the user's
> > interactive shell. We never use that shell for build and test scripts
> > because it might not be a POSIX shell.
> >
> > Perf tests are run inside $SHELL via a wrapper defined in
> > t/perf/perf-lib.sh. Use $TEST_SHELL_PATH like elsewhere.
> >
> > Signed-off-by: Johannes Altmanninger <aclopte@gmail.com>
> > Acked-by: Jeff King <peff@peff.net>
> > ---
> > Original submission:
> > https://lore.kernel.org/git/20211007184716.1187677-1-aclopte@gmail.com/
> 
> This LGTM & I think it could be picked up as-is.
> 
> Just a nit in case af a re-roll. I think it would help to summarize the
> history a bit per
> https://lore.kernel.org/git/YV+1%2F0b5bN3o6qRG@coredump.intra.peff.net/. I.e. something
> like:
>     
>     In 342e9ef2d9e (Introduce a performance testing framework, 2012-02-17)
>     when t/perf was introduced the TEST_SHELL_PATH was not part of
>     GIT-BUILD-OPTIONS.

(but SHELL_PATH was, which is what we should have used back then)

>     That was added later in 3f824e91c84 (t/Makefile:
>     introduce TEST_SHELL_PATH, 2017-12-08). We will always have that
>     available in perf-lib.sh since test-lib.sh will load it before this code
>     is executed.

yes that's a good thing to point out

> 
> >  t/perf/perf-lib.sh | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/t/perf/perf-lib.sh b/t/perf/perf-lib.sh
> > index 780a7402d5..407252bac7 100644
> > --- a/t/perf/perf-lib.sh
> > +++ b/t/perf/perf-lib.sh
> > @@ -161,7 +161,7 @@ test_run_perf_ () {
> >  	test_cleanup=:
> >  	test_export_="test_cleanup"
> >  	export test_cleanup test_export_
> > -	"$GTIME" -f "%E %U %S" -o test_time.$i "$SHELL" -c '
> > +	"$GTIME" -f "%E %U %S" -o test_time.$i "$TEST_SHELL_PATH" -c '
> >  . '"$TEST_DIRECTORY"/test-lib-functions.sh'
> >  test_export () {
> >  	test_export_="$test_export_ $*"
>