Re: Tests failed with GIT_TEST_FAIL_PREREQS and/or GIT_TEST_PROTOCOL_VERSION

[Son Luong Ngoc <sluongng@gmail.com>]

Hi Taylor,

On Tue, Mar 16, 2021 at 09:52:47AM -0400, Taylor Blau wrote:
> Hi,
> 
> Is it possible that your bisection script doesn't report success
> properly? Bisecting the same range (v2.30.0..v2.31.0) with
> 
>     $ cat run.sh
>     #!/bin/sh
>     false
> 
> does say that my 3b1ca60f8f (ewah/ewah_bitmap.c: avoid open-coding
> ALLOC_GROW(), 2020-12-08) is the first bad commit.

You are spot on.  It was a busy day and I only had a few minutes to
look at our internal pipeline of the test suite.  I guess I was doing
something along the line of.

      $ git bisect start HEAD v2.30.0
      $ git bisect run 'cd t && GIT_TEST_PROTOCOL_VERSION=1 ./t5606-clone-options.sh'

Which does indeed errored out and pointed to your commit.

> 
> Thanks,
> Taylor

I have properly re-run the bisection in a './test.sh' bash script and
here are the suspicious commits:

1. For t7810 and t5300 failing when GIT_TEST_FAIL_PREREQS=1:

    a926c4b904bdc339568c2898af955cdc61b31542 is the first bad commit
    commit a926c4b904bdc339568c2898af955cdc61b31542
    Author: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
    Date:   Thu Feb 11 02:53:51 2021 +0100

        tests: remove most uses of C_LOCALE_OUTPUT

        As a follow-up to d162b25f956 (tests: remove support for
        GIT_TEST_GETTEXT_POISON, 2021-01-20) remove those uses of the now
        always true C_LOCALE_OUTPUT prerequisite from those tests which
        declare it as an argument to test_expect_{success,failure}.

        Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
        Signed-off-by: Junio C Hamano <gitster@pobox.com>

2. For failing t5606 while 'GIT_TEST_PROTOCOL_VERSION=1' was used:

    4f37d45706514a4b3d0259d26f719678a0cf3521 is the first bad commit
    commit 4f37d45706514a4b3d0259d26f719678a0cf3521
    Author: Jonathan Tan <jonathantanmy@google.com>
    Date:   Fri Feb 5 12:48:49 2021 -0800

        clone: respect remote unborn HEAD

        Teach Git to use the "unborn" feature introduced in a previous patch as
        follows: Git will always send the "unborn" argument if it is supported
        by the server. During "git clone", if cloning an empty repository, Git
        will use the new information to determine the local branch to create. In
        all other cases, Git will ignore it.

        Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
        Signed-off-by: Junio C Hamano <gitster@pobox.com>

     Documentation/config/init.txt |  2 +-
     builtin/clone.c               | 16 ++++++++++++++--
     connect.c                     | 28 ++++++++++++++++++++++++++--
     t/t5606-clone-options.sh      |  8 +++++---
     t/t5702-protocol-v2.sh        | 25 +++++++++++++++++++++++++
     transport.h                   |  8 ++++++++
     6 files changed, 79 insertions(+), 8 deletions(-)


Thanks,
Son Luong.