vty tests: allow picking specific tests to run by name

Depends: osmo-python-tests change-id I92f90c334169f31920c63dd5c5ac8dac215065e6
Change-Id: I849455e0423e1a63d6890aef7f9c6075ad53a920
diff --git a/openbsc/tests/vty_test_runner.py b/openbsc/tests/vty_test_runner.py
index 5836cd4..0678ec3 100644
--- a/openbsc/tests/vty_test_runner.py
+++ b/openbsc/tests/vty_test_runner.py
@@ -1340,6 +1340,7 @@
                         help="searchpath for config")
     parser.add_argument("-w", "--workdir", dest="w",
                         help="Working directory")
+    parser.add_argument("test_name", nargs="*", help="(parts of) test names to run, case-insensitive")
     args = parser.parse_args()
 
     verbose_level = 1
@@ -1362,6 +1363,10 @@
     add_nat_test(suite, workdir)
     add_gbproxy_test(suite, workdir)
     add_sgsn_test(suite, workdir)
+
+    if args.test_name:
+        osmoutil.pick_tests(suite, *args.test_name)
+
     res = unittest.TextTestRunner(verbosity=verbose_level, stream=sys.stdout).run(suite)
     sys.exit(len(res.errors) + len(res.failures))