Junio C Hamano <gits...@pobox.com> writes:

> Daniel Graña <dan...@gmail.com> writes:
> ...
>> is it still better than "git rev-parse --max-count=1 HEAD" seen in
>> t7406-submodule.update.sh?
>
> "git rev-parse --max-count=1 HEAD" will show "--max-count=1\n"
> followed by the value of HEAD, so if the expected result and the
> actual result were both prepared by that command, the comparison
> would succeed (as the irrelevant --max-count=1 line will appear in
> both output), but honestly, I do not think it makes any sense.

Thanks for noticing; I'll queue this.

-- >8 --
Subject: [PATCH] t7406: fix misleading "rev-parse --max-count=1 HEAD"

The test happened to use "rev-parse --max-count=1 HEAD" consistently
to prepare the expected output and the actual output, so the
comparison between them gave us a correct success/failure because
both output had irrelevant "--max-count=1" in it.

But that is not an excuse to keep it broken.  Replace it a more
meaningful construct "rev-parse --verify HEAD".

Noticed by Daniel Graña while working on his submodule tests.

Signed-off-by: Junio C Hamano <gits...@pobox.com>
---
 t/t7406-submodule-update.sh | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 807f761..f4e6602 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -305,7 +305,7 @@ test_expect_success 'submodule update continues after 
checkout error' '
         git submodule init &&
         git commit -am "new_submodule" &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../expect
+         git rev-parse --verify HEAD >../expect
         ) &&
         (cd submodule &&
          test_commit "update_submodule" file
@@ -322,7 +322,7 @@ test_expect_success 'submodule update continues after 
checkout error' '
         git checkout HEAD^ &&
         test_must_fail git submodule update &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../actual
+         git rev-parse --verify HEAD >../actual
         ) &&
         test_cmp expect actual
        )
@@ -351,7 +351,7 @@ test_expect_success 'submodule update continues after 
recursive checkout error'
          test_commit "update_submodule_again_again" file
         ) &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../expect &&
+         git rev-parse --verify HEAD >../expect &&
          test_commit "update_submodule2_again" file
         ) &&
         git add submodule &&
@@ -366,7 +366,7 @@ test_expect_success 'submodule update continues after 
recursive checkout error'
         ) &&
         test_must_fail git submodule update --recursive &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../actual
+         git rev-parse --verify HEAD >../actual
         ) &&
         test_cmp expect actual
        )
@@ -398,12 +398,12 @@ test_expect_success 'submodule update exit immediately in 
case of merge conflict
         ) &&
         git checkout HEAD^ &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../expect
+         git rev-parse --verify HEAD >../expect
         ) &&
         git config submodule.submodule.update merge &&
         test_must_fail git submodule update &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../actual
+         git rev-parse --verify HEAD >../actual
         ) &&
         test_cmp expect actual
        )
@@ -432,12 +432,12 @@ test_expect_success 'submodule update exit immediately 
after recursive rebase er
         ) &&
         git checkout HEAD^ &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../expect
+         git rev-parse --verify HEAD >../expect
         ) &&
         git config submodule.submodule.update rebase &&
         test_must_fail git submodule update &&
         (cd submodule2 &&
-         git rev-parse --max-count=1 HEAD > ../actual
+         git rev-parse --verify HEAD >../actual
         ) &&
         test_cmp expect actual
        )
-- 
1.7.12.rc0.80.gb93a609

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