test_expect_code 0 "notmuch show --format=json id:mid-loop-12@example.org id:mid-loop-21@example.org > OUTPUT"
test_begin_subtest "reference loop ordered by date"
test_expect_code 0 "notmuch show --format=json id:mid-loop-12@example.org id:mid-loop-21@example.org > OUTPUT"
test_begin_subtest "reference loop ordered by date"