test_expect_success 'one is ancestor of others and should not be shown' '
git rev-list one --not four >result &&
- >expect &&
- test_cmp expect result
+ test_must_be_empty result
'
test_commit t$i
done &&
git rev-list t1^! --not t$i >result &&
- >expect &&
- test_cmp expect result
+ test_must_be_empty result
'
test_done