[PATCH net-next v3 7/8] selftests: net: support matching cases by name prefix

[Jakub Kicinski <kuba@xxxxxxxxxx>]

While writing tests with a lot more cases I got tired of having
to jump back and forth to add the name of the test to the ksft_run()
list. Most unittest frameworks do some name matching, e.g. assume
that functions with names starting with test_ are test cases.

Support similar flow in ksft_run(). Let the author list the desired
prefixes. globals() need to be passed explicitly, IDK how to work
around that.

Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
---
 tools/testing/selftests/drivers/net/ping.py |  3 +--
 tools/testing/selftests/net/lib/py/ksft.py  | 10 +++++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py
index 7dd197836ff1..58aefd3e740f 100755
--- a/tools/testing/selftests/drivers/net/ping.py
+++ b/tools/testing/selftests/drivers/net/ping.py
@@ -24,8 +24,7 @@ from lib.py import cmd
 
 def main() -> None:
     with NetDrvEpEnv(__file__) as cfg:
-        ksft_run([test_v4, test_v6],
-                 args=(cfg, ))
+        ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, ))
     ksft_exit()
 
 
diff --git a/tools/testing/selftests/net/lib/py/ksft.py b/tools/testing/selftests/net/lib/py/ksft.py
index 25f2572fa540..fe4025dc5a16 100644
--- a/tools/testing/selftests/net/lib/py/ksft.py
+++ b/tools/testing/selftests/net/lib/py/ksft.py
@@ -81,7 +81,15 @@ KSFT_RESULT_ALL = True
     print(res)
 
 
-def ksft_run(cases, args=()):
+def ksft_run(cases=None, globs=None, case_pfx=None, args=()):
+    cases = cases or []
+
+    if globs and case_pfx:
+        for key, value in globs.items():
+            stats_with_pfx = bool([pfx for pfx in case_pfx if key.startswith(pfx)])
+            if callable(value) and stats_with_pfx:
+                cases.append(value)
+
     totals = {"pass": 0, "fail": 0, "skip": 0, "xfail": 0}
 
     print("KTAP version 1")
-- 
2.44.0