Re: [PATCH 7/8] t/perf: add 'GIT_PERF_USE_SCALAR' run option

> Johannes Schindelin wrote:
> >
> > On Wed, 31 Aug 2022, Victoria Dye via GitGitGadget wrote:
> >
> >> From: Victoria Dye <vdye@github.com>
> >>
> >> Add a 'GIT_PERF_USE_SCALAR' environment variable (and corresponding perf
> >> config 'useScalar') to register a repository created with any of:
> >>
> >> * test_perf_fresh_repo
> >> * test_perf_default_repo
> >> * test_perf_large_repo
> >>
> >> as a Scalar enlistment. This is intended to allow a developer to test the
> >> impact of Scalar on already-defined performance scenarios.
> >
> > Great idea!
> >
> >> [...]
> >> @@ -130,7 +137,11 @@ test_perf_fresh_repo () {
> >>  	"$MODERN_GIT" init -q "$repo" &&
> >>  	(
> >>  		cd "$repo" &&
> >> -		test_perf_do_repo_symlink_config_
> >> +		test_perf_do_repo_symlink_config_ &&
> >> +		if test_bool_env "$GIT_PERF_USE_SCALAR" false
> >> +		then
> >> +			"$MODERN_SCALAR" register
> >
> > Do we need to unregister anything here? My guess is that no, the "global"
> > config we're using in tests is "$TRASH_DIRECTORY/.gitconfig", and the side
> > effect of scheduling the maintenance task won't matter in practice. But I
> > might have missed something and we may want to have an explicit
> > `unregister` step.
> >
> > What's your take on this?
>
> As you guessed, a '.gitconfig' is created in the trash directory of each
> test containing the Scalar registration and I haven't seen any issues
> arising from the scheduled maintenance, so I don't think an 'unregister' is
> necessary.