merge: do not create a signed tag merge under --ff-only option

diff --git a/t/t9301-fast-import-notes.sh b/t/t9301-fast-import-notes.sh
index 463254c72734beaf74948b6c424367ef4fea9d1a..83acf68bc3c19770eb690ece139892ca75329216 100755 (executable)
--- a/t/t9301-fast-import-notes.sh
+++ b/t/t9301-fast-import-notes.sh
@@ -505,9 +505,63 @@ test_expect_success 'verify that non-notes are untouched by a fanout change' '
        test_cmp expect_non-note3 actual
 
 '
+
+# Change the notes for the three top commits
+test_tick
+cat >input <<INPUT_END
+commit refs/notes/many_notes
+committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+data <<COMMIT
+changing notes for the top three commits
+COMMIT
+from refs/notes/many_notes^0
+INPUT_END
+
+rm expect
+i=$num_commits
+j=0
+while test $j -lt 3
+do
+       cat >>input <<INPUT_END
+N inline refs/heads/many_commits~$j
+data <<EOF
+changed note for commit #$i
+EOF
+INPUT_END
+       cat >>expect <<EXPECT_END
+    commit #$i
+    changed note for commit #$i
+EXPECT_END
+       i=$(($i - 1))
+       j=$(($j + 1))
+done
+
+test_expect_success 'change a few existing notes' '
+
+       git fast-import <input &&
+       GIT_NOTES_REF=refs/notes/many_notes git log -n3 refs/heads/many_commits |
+           grep "^    " > actual &&
+       test_cmp expect actual
+
+'
+
+test_expect_success 'verify that changing notes respect existing fanout' '
+
+       # None of the entries in the top-level notes tree should be a full SHA1
+       git ls-tree --name-only refs/notes/many_notes |
+       while read path
+       do
+               if test $(expr length "$path") -ge 40
+               then
+                       return 1
+               fi
+       done
+
+'
+
 remaining_notes=10
 test_tick
-cat >>input <<INPUT_END
+cat >input <<INPUT_END
 commit refs/notes/many_notes
 committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
 data <<COMMIT
@@ -516,12 +570,11 @@ COMMIT
 from refs/notes/many_notes^0
 INPUT_END
 
-i=$remaining_notes
-while test $i -lt $num_commits
+i=$(($num_commits - $remaining_notes))
+for sha1 in $(git rev-list -n $i refs/heads/many_commits)
 do
-       i=$(($i + 1))
        cat >>input <<INPUT_END
-N 0000000000000000000000000000000000000000 :$i
+N 0000000000000000000000000000000000000000 $sha1
 INPUT_END
 done