submodule update: Don't fetch when the submodule commit is already present

[git.git] / t / t7406-submodule-update.sh

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index bfb4975e940e29edf3b06e5c074b8e963cfbbdcf..ee3eec51571cd64c815924269d475b4a392cb361 100755 (executable)
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -74,6 +74,26 @@ test_expect_success 'submodule update detaching the HEAD ' '
        )
 '
 
+apos="'";
+test_expect_success 'submodule update does not fetch already present commits' '
+       (cd submodule &&
+         echo line3 >> file &&
+         git add file &&
+         test_tick &&
+         git commit -m "upstream line3"
+       ) &&
+       (cd super/submodule &&
+         head=$(git rev-parse --verify HEAD) &&
+         echo "Submodule path ${apos}submodule$apos: checked out $apos$head$apos" > ../../expected &&
+         git reset --hard HEAD~1
+       ) &&
+       (cd super &&
+         git submodule update > ../actual 2> ../actual.err
+       ) &&
+       test_cmp expected actual &&
+       ! test -s actual.err
+'
+
 test_expect_success 'submodule update --rebase staying on master' '
        (cd super/submodule &&
          git checkout master