[matter_yamltests] Allow response field to be configured from the config section

Author: vivien-apple

scripts/py_matter_yamltests/matter_yamltests/parser.py

@@ -222,6 +222,11 @@ def __init__(self, test: dict, config: dict, definitions: SpecDefinitions, pics_
             # a success with any associatied value(s). So the empty response is effectively
             # replace by an array that contains an empty object to represent that.
             responses = [{}]
+        elif isinstance(responses, str):
+            if config.get(responses):
+                responses = config.get(responses)
+            else:
+                raise ValueError(responses)
         elif not isinstance(responses, list):
             # If a single response is specified, it is converted to a list of responses.
             responses = [responses]

scripts/py_matter_yamltests/matter_yamltests/yaml_loader.py

@@ -101,7 +101,7 @@ def __check_test_step(self, content):
             'verification': str,
             'PICS': str,
             'arguments': dict,
-            'response': (dict, list),
+            'response': (dict, list, str),  # Can be a variable
             'minInterval': int,
             'maxInterval': int,
             'timedInteractionTimeoutMs': int,
@@ -124,7 +124,7 @@ def __check_test_step(self, content):
             response = content.get('response')
             if isinstance(response, list):
                 [self.__check_test_step_response(x) for x in response]
-            else:
+            elif isinstance(response, dict):
                 self.__check_test_step_response(response)
 
     def __check_test_step_arguments(self, content):

scripts/py_matter_yamltests/test_yaml_loader.py

@@ -301,7 +301,7 @@ def test_key_tests_step_response_key(self):
         _, _, _, _, tests = load(content.format(value=value))
         self.assertEqual(tests, [{'response': [{'value': True}]}])
 
-        wrong_values = self._get_wrong_values([dict, list], spaces=6)
+        wrong_values = self._get_wrong_values([dict, list, str], spaces=6)
         for value in wrong_values:
             x = content.format(value=value)
             self.assertRaises(TestStepInvalidTypeError, load, x)