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Re: [PATCH v3 1/4] t1400: avoid touching refs on filesystem

From
SZEDER Gábor <szeder.dev@gmail.com>
Date
Nov 11, 2020, 10:24 UTC
Message-ID
<20201111102412.GB4270@szeder.dev>
In-Reply-To
<X6u2Lz9khi+DeF87@ncase>
On Wed, Nov 11, 2020 at 11:00:15AM +0100, Patrick Steinhardt wrote:
Show 32 quoted lines
> On Wed, Nov 11, 2020 at 10:04:54AM +0100, SZEDER Gábor wrote:
> > On Wed, Nov 11, 2020 at 07:58:38AM +0100, Patrick Steinhardt wrote:
> > > The testcase t1400 exercises the git-update-ref(1) utility. To do so,
> > > many tests directly read and write references via the filesystem,
> > > assuming that we always use loose and/or packed references. While this
> > > is true now, it'll change with the introduction of the reftable backend.
> > > 
> > > Convert those tests to use git-update-ref(1) and git-show-ref(1) where
> > > possible. As some tests exercise behaviour with broken references and
> > > neither of those tools actually allows writing or reading broken
> > > references, this commit doesn't adjust all tests.
> > > 
> > > Signed-off-by: Patrick Steinhardt <ps@pks.im>
> > > ---
> > >  t/t1400-update-ref.sh | 72 +++++++++++++++++++++++--------------------
> > >  1 file changed, 39 insertions(+), 33 deletions(-)
> > > 
> > > diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
> > > index 4c01e08551..d7a57488ed 100755
> > > --- a/t/t1400-update-ref.sh
> > > +++ b/t/t1400-update-ref.sh
> > 
> > > @@ -188,27 +194,26 @@ test_expect_success "move $m (by HEAD)" '
> > >  	test $B = $(git show-ref -s --verify $m)
> > >  '
> > >  test_expect_success "delete $m (by HEAD) should remove both packed and loose $m" '
> > > -	test_when_finished "rm -f .git/$m" &&
> > > +	test_when_finished "rm -f git update-ref -d $m" &&
> > 
> > There is a leftover 'rm -f' here.
> 
> Oops, thanks a lot for catching. Funny that it still passed.

The '-f' option makes it ignore missing files like 'git', 'update-ref' and whatever $m happens to expand to in this test, and '/bin/rm' from coreutils (and apparently on macOS) understands the '-d' option ("remove empty directories"), so there was no error to fail this test on common setups. (I didn't investigate whether and how the not deleted $m ref affects subsequent tests...) But nowadays we have a CI job running the tests with 'busybox sh' whose builtin 'rm' doesn't have a '-d' option, and it errors out with:

  + rm -f git update-ref -d refs/heads/master
  rm: unrecognized option: d
  BusyBox v1.31.1 () multi-call binary.
  Usage: ......
https://travis-ci.org/github/git/git/jobs/742890453#L2853
Previous: Patrick SteinhardtNext: Jeff King
Message 26 of 41 in “update-ref: Allow creation of multiple transactions”
  1. 0/2 update-ref: Allow creation of multiple transactionsPatrick Steinhardt, Nov 4, 2020
  2. 1/2 update-ref: Allow creation of multiple transactionsPatrick Steinhardt, Nov 4, 2020
  3. Jeff KingNov 5, 2020
  4. Junio C HamanoNov 5, 2020
  5. Jeff KingNov 6, 2020
  6. Junio C HamanoNov 6, 2020
  7. Patrick SteinhardtNov 6, 2020
  8. 2/2 p1400: Use `git-update-ref --stdin` to test multiple transactionsPatrick Steinhardt, Nov 4, 2020
  9. Jeff KingNov 5, 2020
  10. 0/4 update-ref: Allow creation of multiple transactionsPatrick Steinhardt, Nov 9, 2020
  11. 1/4 t1400: Avoid touching refs on filesystemPatrick Steinhardt, Nov 9, 2020
  12. Junio C HamanoNov 9, 2020
  13. Jeff KingNov 9, 2020
  14. Patrick SteinhardtNov 10, 2020
  15. Junio C HamanoNov 10, 2020
  16. 2/4 update-ref: Allow creation of multiple transactionsPatrick Steinhardt, Nov 9, 2020
  17. 3/4 p1400: Use `git-update-ref --stdin` to test multiple transactionsPatrick Steinhardt, Nov 9, 2020
  18. 4/4 update-ref: Disallow restart of ongoing transactionsPatrick Steinhardt, Nov 9, 2020
  19. Junio C HamanoNov 9, 2020
  20. Jeff KingNov 9, 2020
  21. Junio C HamanoNov 9, 2020
  22. 0/4 update-ref: allow creation of multiple transactionsPatrick Steinhardt, Nov 11, 2020
  23. 1/4 t1400: avoid touching refs on filesystemPatrick Steinhardt, Nov 11, 2020
  24. SZEDER GáborNov 11, 2020
  25. Patrick SteinhardtNov 11, 2020
  26. SZEDER GáborNov 11, 2020
  27. Jeff KingNov 11, 2020
  28. Patrick SteinhardtNov 13, 2020
  29. 2/4 update-ref: allow creation of multiple transactionsPatrick Steinhardt, Nov 11, 2020
  30. 3/4 p1400: use `git-update-ref --stdin` to test multiple transactionsPatrick Steinhardt, Nov 11, 2020
  31. 4/4 update-ref: disallow "start" for ongoing transactionsPatrick Steinhardt, Nov 11, 2020
  32. 0/4 update-ref: allow creation of multiple transactionsPatrick Steinhardt, Nov 13, 2020
  33. 1/4 t1400: avoid touching refs on filesystemPatrick Steinhardt, Nov 13, 2020
  34. Jeff KingNov 13, 2020
  35. Patrick SteinhardtNov 18, 2020
  36. Junio C HamanoNov 18, 2020
  37. 2/4 update-ref: allow creation of multiple transactionsPatrick Steinhardt, Nov 13, 2020
  38. 3/4 p1400: use `git-update-ref --stdin` to test multiple transactionsPatrick Steinhardt, Nov 13, 2020
  39. 4/4 update-ref: disallow "start" for ongoing transactionsPatrick Steinhardt, Nov 13, 2020
  40. Junio C HamanoNov 25, 2020
  41. Jeff KingNov 26, 2020

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