+# OVSDB_CHECK_NEGATIVE(TITLE, TEST-OVSDB-ARGS, OUTPUT, [KEYWORDS], [PREREQ])
+#
+# Runs "test-ovsdb TEST-OVSDB-ARGS" and checks that it exits with
+# status 1 and that its output on stdout contains substring OUTPUT.
+# TITLE is provided to AT_SETUP and KEYWORDS to AT_KEYWORDS.