Re: [PATCH 2/2] test-lib: GIT_TEST_ONLY to run only specific tests

> This is a counterpart to GIT_SKIP_TESTS.  Mostly useful when 
> debugging.
> ---
> t/README      |   15 +++++++++++++++
> t/test-lib.sh |    8 ++++++++
> 2 files changed, 23 insertions(+), 0 deletions(-)
>
> diff --git a/t/README b/t/README
> index caeeb9d..f939987 100644
> --- a/t/README
> +++ b/t/README
> @@ -187,6 +187,21 @@ and either can match the "t[0-9]{4}" part to skip 
> the whole
> test, or t[0-9]{4} followed by ".$number" to say which
> particular test to skip.
>
> +Sometimes the opposite is desired - ability to execute only one or
> +several tests.  Mostly while debugging tests.  For that you can say
> +
> +    $ GIT_TEST_ONLY=t9200.8 sh ./t9200-git-cvsexport-commit.sh
> +
> +or, similrary to GIT_SKIP_TESTS
> +
> +    $ GIT_TEST_ONLY='t[0-4]??? t91?? t9200.8' make
> +
> +In additiona to matching against "<test suite number>.<test number>"
> +GIT_TEST_ONLY is matched against just the test .  This comes

> +
> +    $ GIT_TEST_ONLY='[0-8]' sh ./t9200-git-cvsexport-commit.sh
> +
> Note that some tests in the existing test suite rely on previous
> test item, so you cannot arbitrarily disable one and expect the
> remainder of test to check what the test originally was intended
> diff --git a/t/test-lib.sh b/t/test-lib.sh
> index 89a405b..12bf436 100644
> --- a/t/test-lib.sh
> +++ b/t/test-lib.sh
> @@ -464,6 +464,14 @@ test_skip () {
>  fi
>  skipped_reason="missing $missing_prereq${of_prereq}"
>  fi
> + if test -z "$to_skip" && test -n "$GIT_TEST_ONLY" &&
> + ! match_pattern_list $this_test.$test_count $GIT_TEST_ONLY &&
> + ! match_pattern_list $test_count $GIT_TEST_ONLY
> + then
> + to_skip=t
> + skipped_reason="not in GIT_TEST_ONLY"
> + fi
> +
>  case "$to_skip" in
>  t)
>  say_color skip >&3 "skipping test: $@"
> --