completion: add comment for test_completion()

diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
index 5869061c5bfdee4a84b156b8ec9d6e331a2c906c..0b521057283bf106da8ce55f25f61c7ec7e3ad35 100755 (executable)
--- a/t/t3412-rebase-root.sh
+++ b/t/t3412-rebase-root.sh
@@ -22,8 +22,9 @@ test_expect_success 'prepare repository' '
        test_commit 4 B
 '
 
-test_expect_success 'rebase --root expects --onto' '
-       test_must_fail git rebase --root
+test_expect_success 'rebase --root fails with too many args' '
+       git checkout -B fail other &&
+       test_must_fail git rebase --onto master --root fail fail
 '
 
 test_expect_success 'setup pre-rebase hook' '
@@ -42,7 +43,7 @@ cat > expect <<EOF
 EOF
 
 test_expect_success 'rebase --root --onto <newbase>' '
-       git checkout -b work &&
+       git checkout -b work other &&
        git rebase --root --onto master &&
        git log --pretty=tformat:"%s" > rebased &&
        test_cmp expect rebased
@@ -173,14 +174,14 @@ EOF
 test_expect_success 'pre-rebase hook stops rebase' '
        git checkout -b stops1 other &&
        test_must_fail git rebase --root --onto master &&
-       test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1
+       test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1 &&
        test 0 = $(git rev-list other...stops1 | wc -l)
 '
 
 test_expect_success 'pre-rebase hook stops rebase -i' '
        git checkout -b stops2 other &&
        test_must_fail git rebase --root --onto master &&
-       test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops2
+       test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops2 &&
        test 0 = $(git rev-list other...stops2 | wc -l)
 '