describe: when failing, tell the user about options that work

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 0773fe405bb792e82b658c7cea2d8815163ccd19..2d33d9efec3f2f601305e736e31368621acd0584 100755 (executable)
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -6,7 +6,7 @@
 test_description='Test updating submodules
 
 This test verifies that "git submodule update" detaches the HEAD of the
-submodule and "git submodule update --rebase" does not detach the HEAD.
+submodule and "git submodule update --rebase/--merge" does not detach the HEAD.
 '
 
 . ./test-lib.sh
@@ -76,6 +76,20 @@ test_expect_success 'submodule update --rebase staying on master' '
        )
 '
 
+test_expect_success 'submodule update --merge staying on master' '
+       (cd super/submodule &&
+         git reset --hard HEAD~1
+       ) &&
+       (cd super &&
+        (cd submodule &&
+         compare_head
+        ) &&
+        git submodule update --merge submodule &&
+        cd submodule &&
+        compare_head
+       )
+'
+
 test_expect_success 'submodule update - rebase in .git/config' '
        (cd super &&
         git config submodule.submodule.update rebase
@@ -110,6 +124,40 @@ test_expect_success 'submodule update - checkout in .git/config but --rebase giv
        )
 '
 
+test_expect_success 'submodule update - merge in .git/config' '
+       (cd super &&
+        git config submodule.submodule.update merge
+       ) &&
+       (cd super/submodule &&
+         git reset --hard HEAD~1
+       ) &&
+       (cd super &&
+        (cd submodule &&
+         compare_head
+        ) &&
+        git submodule update submodule &&
+        cd submodule &&
+        compare_head
+       )
+'
+
+test_expect_success 'submodule update - checkout in .git/config but --merge given' '
+       (cd super &&
+        git config submodule.submodule.update checkout
+       ) &&
+       (cd super/submodule &&
+         git reset --hard HEAD~1
+       ) &&
+       (cd super &&
+        (cd submodule &&
+         compare_head
+        ) &&
+        git submodule update --merge submodule &&
+        cd submodule &&
+        compare_head
+       )
+'
+
 test_expect_success 'submodule update - checkout in .git/config' '
        (cd super &&
         git config submodule.submodule.update checkout
@@ -137,4 +185,14 @@ test_expect_success 'submodule init picks up rebase' '
        )
 '
 
+test_expect_success 'submodule init picks up merge' '
+       (cd super &&
+        git config submodule.merging.url git://non-existing/git &&
+        git config submodule.merging.path does-not-matter &&
+        git config submodule.merging.update merge &&
+        git submodule init merging &&
+        test "merge" = $(git config submodule.merging.update)
+       )
+'
+
 test_done