+output=$(NOTMUCH_NEW --debug)
+test_expect_equal "$output" "(D) add_files_recursive, pass 3: queuing leftover directory ${MAIL_DIR}/two for deletion from database
+No new mail. Removed 3 messages."
+
+test_begin_subtest "Support single-message mbox"
+test_subtest_known_broken
+cat > "${MAIL_DIR}"/mbox_file1 <<EOF
+From test_suite@notmuchmail.org Fri Jan 5 15:43:57 2001
+From: Notmuch Test Suite <test_suite@notmuchmail.org>
+To: Notmuch Test Suite <test_suite@notmuchmail.org>
+Subject: Test mbox message 1
+
+Body.
+EOF
+output=$(NOTMUCH_NEW --debug 2>&1)
+test_expect_equal "$output" "Added 1 new message to the database."