Re: [RFC PATCH 08/13] test-reach: test reduce_heads()

[Stefan Beller <sbeller@google.com>]

On Fri, Jun 29, 2018 at 9:13 AM Derrick Stolee <dstolee@microsoft.com> wrote:
>
> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
> ---
>  t/t6600-test-reach.sh | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
>
> diff --git a/t/t6600-test-reach.sh b/t/t6600-test-reach.sh
> index c9337b6b46..0f60db9c60 100755
> --- a/t/t6600-test-reach.sh
> +++ b/t/t6600-test-reach.sh
> @@ -78,4 +78,30 @@ test_expect_success 'ref_newer:miss' '
>         test_reach_two_modes "ref_newer"
>  '
>
> +test_expect_success 'reduce_heads' '
> +       cat >input <<- EOF &&
> +       X:commit-1-10
> +       X:commit-2-8
> +       X:commit-3-6
> +       X:commit-4-4
> +       X:commit-1-7
> +       X:commit-2-5
> +       X:commit-3-3
> +       X:commit-5-1
> +       Y:commit-10-10
> +       Y:commit-3-10
> +       Y:commit-9-9
> +       Y:commit-8-1
> +       EOF
> +       printf "reduce_heads(X):\n" >expect &&
> +       git rev-parse commit-5-1 >>expect &&

See 6ac767e5c00 (t6036, t6042: prefer test_cmp to sequences of test, 2018-05-24)
on how to avoid some forks here:

    git rev-parse >expect \
        many HEADs or Tips &&