panic: allow running specific test cases from command line

Small quality-of-life improvement, make it easier to run specific
test cases, when debugging the tests locally.
Take the optional list of test cases to run from the command line.

Author: igrr

tools/test_apps/system/panic/app_test.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+import sys
 import panic_tests as test
 from test_panic_util.test_panic_util import panic_test, run_all
 
@@ -247,4 +248,4 @@ def test_coredump_abort_flash_bin_crc(env, extra_data):
 
 
 if __name__ == '__main__':
-    run_all(__file__)
+    run_all(__file__, sys.argv[1:])

tools/test_apps/system/panic/test_panic_util/test_panic_util.py

@@ -159,14 +159,19 @@ def get_dut(env, app_config_name, test_name, qemu_wdt_enable=False):
     return dut
 
 
-def run_all(filename):
-    """ Helper function to run all test cases defined in a file; to be called from __main__. """
+def run_all(filename, case_filter=[]):
+    """ Helper function to run test cases defined in a file; to be called from __main__.
+        case_filter is an optional list of case names to run.
+        If not specified, all test cases are run.
+    """
     TinyFW.set_default_config(env_config_file=None, test_suite_name=TEST_SUITE)
     test_methods = SearchCases.Search.search_test_cases(filename)
     test_methods = filter(lambda m: not m.case_info["ignore"], test_methods)
     test_cases = CaseConfig.Parser.apply_config(test_methods, None)
     tests_failed = []
     for case in test_cases:
+        if case_filter and case.test_method.__name__ not in case_filter:
+            continue
         result = case.run()
         if not result:
             tests_failed.append(case)