commit: do not ignore an empty message given by -m ''

diff --git a/t/t3406-rebase-message.sh b/t/t3406-rebase-message.sh
index e6a9a0d436f3a28a7de6eaadd7f1f223ae740c64..0392e36d2364c8149f2a628a0901f113b7a5875f 100755 (executable)
--- a/t/t3406-rebase-message.sh
+++ b/t/t3406-rebase-message.sh
@@ -4,27 +4,17 @@ test_description='messages from rebase operation'
 
 . ./test-lib.sh
 
-quick_one () {
-       echo "$1" >"file$1" &&
-       git add "file$1" &&
-       test_tick &&
-       git commit -m "$1"
-}
+test_expect_success 'setup' '
+       test_commit O fileO &&
+       test_commit X fileX &&
+       test_commit A fileA &&
+       test_commit B fileB &&
+       test_commit Y fileY &&
 
-test_expect_success setup '
-       quick_one O &&
-       git branch topic &&
-       quick_one X &&
-       quick_one A &&
-       quick_one B &&
-       quick_one Y &&
-
-       git checkout topic &&
-       quick_one A &&
-       quick_one B &&
-       quick_one Z &&
+       git checkout -b topic O &&
+       git cherry-pick A B &&
+       test_commit Z fileZ &&
        git tag start
-
 '
 
 cat >expect <<\EOF
@@ -34,12 +24,32 @@ Committed: 0003 Z
 EOF
 
 test_expect_success 'rebase -m' '
-
        git rebase -m master >report &&
        sed -n -e "/^Already applied: /p" \
                -e "/^Committed: /p" report >actual &&
        test_cmp expect actual
+'
+
+test_expect_success 'rebase against master twice' '
+       git rebase master >out &&
+       test_i18ngrep "Current branch topic is up to date" out
+'
+
+test_expect_success 'rebase against master twice with --force' '
+       git rebase --force-rebase master >out &&
+       test_i18ngrep "Current branch topic is up to date, rebase forced" out
+'
+
+test_expect_success 'rebase against master twice from another branch' '
+       git checkout topic^ &&
+       git rebase master topic >out &&
+       test_i18ngrep "Current branch topic is up to date" out
+'
 
+test_expect_success 'rebase fast-forward to master' '
+       git checkout topic^ &&
+       git rebase topic >out &&
+       test_i18ngrep "Fast-forwarded HEAD to topic" out
 '
 
 test_expect_success 'rebase --stat' '