Re: [PATCH 1/2] tests: add test case for autocorrect in work tree for bare clone

[Simon Gerber <gesimu@gmail.com>]

On Fri, 28 Oct 2022 at 21:28, Junio C Hamano <gitster@pobox.com> wrote:
>
> "Simon Gerber via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> >  t/t9005-help-autocorrect-worktree.sh | 29 ++++++++++++++++++++++++++++
>
> Don't we have existing test script for auto-correction?  Is it
> sensible to waste a new fail for this single test?  I doubt it.
>
> Perhaps appending after 9003 a new test instead?

I'll move the test to 9003. I was considering doing so in the
beginning, but was hesitant to add an only vaguely related test in
9003 which has the description "help.autocorrect finding a match".

>
> > diff --git a/t/t9005-help-autocorrect-worktree.sh b/t/t9005-help-autocorrect-worktree.sh
> > new file mode 100755
> > index 00000000000..4fecc8a8e01
> > --- /dev/null
> > +++ b/t/t9005-help-autocorrect-worktree.sh
> > @@ -0,0 +1,29 @@
> > +#!/bin/sh
> > +
> > +test_description='test autocorrect in work tree based on bare repository'
> > +. ./test-lib.sh
> > +
> > +test_expect_success 'setup non-bare' '
> > +     echo one >file &&
> > +     git add file &&
> > +     git commit -m one &&
> > +     echo two >file &&
> > +     git commit -a -m two
> > +'
>
> Wouldn't "test_commit" be simpler to use than rolling our own here?
> If we piggy-back on set-up in an existing test script, there
> probably is already a history the single test to attempt running
> 'git staut' can use.  After all, that test does not care an iota
> what is in the history.
>
> > +
> > +test_expect_success 'setup bare' '
> > +     git clone --bare . bare.git &&
> > +     cd bare.git
>
> Do not chdir around in a test script, especially in separate steps.
>
> > +'
> > +
> > +test_expect_success 'setup worktree from bare' '
> > +     git worktree add ../bare-wt &&
> > +     cd ../bare-wt
> > +'
>
> Ditto.
>
> Either do it in a subshell in a single step, or
>
>         (
>                 git clone --bare . bare.git &&
>                 cd bare.git &&
>                 git worktree add ../worktree &&
>                 cd ../worktree &&
>                 git -c help.autocorrect=immediate staut
>         )
>
> use "git -C <over-there>" form, e.g.
>
>         git clone --bare . bare.git &&
>         git -C bare.git worktree add ../worktree &&
>         git -C worktree -c help.autocorrect=immediate staut
>

Thanks for taking the time to point out how I'm supposed to use the
test framework, I was pretty lost trying to write my test and ended up
copying some bits from 7103.

> > +test_expect_success 'autocorrect works in work tree created from bare repo' '
>
> When patch 1/2 is applied without 2/2, this test_expect_success will
> not be satisfied, breaking future bisection.
>
> For a small change like this, have the code change *and* test that
> verifies the new behaviour in a single step.  That way
>
>  * you do not break bisection.
>
>  * if somebody wants to cherry-pick the fix to an older maintenance
>    tracks, they can do so by picking a single unit, fix and
>    verification combined together.
>
>  * acceptance or review can be done by checking the end-result and
>    then tentatively reverting only the code change with something
>    like
>
>         $ git show -- ':!t/' | git apply -R
>
>    and see the test that expects success actually fails without the fix.

That makes sense. I'll resubmit this as a single patch.