Re: [PATCH 2/2 v2] checkout: add a test for creating a new branch with regexp as a starting point

> Reported-by: Ivan Zakharyaschev <imz@altlinux.org>
> Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
> ---
>  t/t2018-checkout-branch.sh |   25 +++++++++++++++++++++----
>  1 files changed, 21 insertions(+), 4 deletions(-)
>
> diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh
> index 1caffea..6ada870 100755
> --- a/t/t2018-checkout-branch.sh
> +++ b/t/t2018-checkout-branch.sh
> @@ -4,12 +4,13 @@ test_description='checkout '
>
>  . ./test-lib.sh
>
> -# Arguments: <branch> <sha> [<checkout options>]
> +# Arguments: <branch> <start_point> [<checkout options>]
>  #
>  # Runs "git checkout" to switch to <branch>, testing that
>  #
>  #   1) we are on the specified branch, <branch>;
> -#   2) HEAD is <sha>; if <sha> is not specified, the old HEAD is used.
> +#   2) HEAD points to the same commit as <start_point> does;
> +#      if <start_point> is not specified, the old HEAD is used.
>  #
>  # If <checkout options> is not specified, "git checkout" is run with -b.
>  do_checkout() {
> @@ -17,7 +18,8 @@ do_checkout() {
>        exp_ref="refs/heads/$exp_branch" &&
>
>        # if <sha> is not specified, use HEAD.
> -       exp_sha=${2:-$(git rev-parse --verify HEAD)} &&
> +       start_point=${2:-HEAD}
> +       exp_sha=$(git rev-parse --verify $start_point) &&
>
>        # default options for git checkout: -b
>        if [ -z "$3" ]; then
> @@ -26,7 +28,7 @@ do_checkout() {
>                opts="$3"
>        fi
>
> -       git checkout $opts $exp_branch $exp_sha &&
> +       git checkout $opts $exp_branch $start_point &&
>
>        test $exp_ref = $(git rev-parse --symbolic-full-name HEAD) &&
>        test $exp_sha = $(git rev-parse --verify HEAD)
> @@ -118,7 +120,22 @@ test_expect_success 'checkout -b to an existing branch fails' '
>        test_must_fail do_checkout branch2 $HEAD2
>  '
>
> +test_expect_failure 'checkout -b new_branch :/regexp' '
> +       # clean up from previous test
> +       git reset --hard &&
> +
> +       do_checkout old_regexp_branch branch1 &&
> +       # The first commit in this test should not be referenced by
> +       # other branches or tags.
> +       test_commit first a a "" &&
> +       test_commit second &&
> +
> +       do_checkout new_regexp_branch :/first
> +'
> +
>  test_expect_success 'checkout -B to an existing branch resets branch to HEAD' '
> +       # clean up from previous test
> +       git reset --hard &&
>        git checkout branch1 &&
>
>        do_checkout branch2 "" -B
> --
> 1.7.2.1