test_begin_subtest "Support single-message mbox"
cat > "${MAIL_DIR}"/mbox_file1 <<EOF
From test_suite@notmuchmail.org Fri Jan 5 15:43:57 2001
test_begin_subtest "Support single-message mbox"
cat > "${MAIL_DIR}"/mbox_file1 <<EOF
From test_suite@notmuchmail.org Fri Jan 5 15:43:57 2001