[PATCH 3/3] tests/functional: add -k TEST_NAME_PATTERN CLI arg

[Manos Pitsidianakis <manos.pitsidianakis@linaro.org>]

Add a CLI argument that takes fnmatch(3)-style patterns as value and can
be specified many times. Only tests that match the pattern will be
executed. This argument is passed to unittest.main which takes the same
argument.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
---
 tests/functional/qemu_test/testcase.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/tests/functional/qemu_test/testcase.py b/tests/functional/qemu_test/testcase.py
index 4455fcc38016c14db04019bbd64eaae9b47363c1..b7a660fd729afe39ff8cf7a0be97c2fc2f2f573f 100644
--- a/tests/functional/qemu_test/testcase.py
+++ b/tests/functional/qemu_test/testcase.py
@@ -55,6 +55,14 @@ def parse_args(test_name: str) -> argparse.Namespace:
         action="store_true",
         help="List all tests that would be executed and exit.",
     )
+    parser.add_argument(
+        "-k",
+        dest="test_name_patterns",
+        action="append",
+        type=str,
+        help="Only run tests which match the given substring. "
+        "This argument is passed to unittest.main verbatim.",
+    )
     return parser.parse_args()
 
 
@@ -301,8 +309,12 @@ def main():
 
         tr = pycotap.TAPTestRunner(message_log = pycotap.LogMode.LogToError,
                                    test_output_log = pycotap.LogMode.LogToError)
+        argv = ["__dummy__", path] + (
+            (["-k"] + args.test_name_patterns)
+            if args.test_name_patterns else []
+        )
         res = unittest.main(module = None, testRunner = tr, exit = False,
-                            argv=["__dummy__", path])
+                            argv=argv)
         for (test, message) in res.result.errors + res.result.failures:
 
             if hasattr(test, "log_filename"):

-- 
2.47.2