python framework: Fix warning on asyncio not awaited (project-chip#36915)

Testing: TC_TestArrtAvail.py

Author: cecille

src/python_testing/matter_testing_infrastructure/chip/testing/matter_testing.py

@@ -1142,8 +1142,6 @@ def setup_class(self):
         self.current_step_index = 0
         self.step_start_time = datetime.now(timezone.utc)
         self.step_skipped = False
-        self.global_wildcard = asyncio.wait_for(self.default_controller.Read(self.dut_node_id, [(Clusters.Descriptor), Attribute.AttributePath(None, None, GlobalAttributeIds.ATTRIBUTE_LIST_ID), Attribute.AttributePath(
-            None, None, GlobalAttributeIds.FEATURE_MAP_ID), Attribute.AttributePath(None, None, GlobalAttributeIds.ACCEPTED_COMMAND_LIST_ID)]), timeout=60)
         # self.stored_global_wildcard stores value of self.global_wildcard after first async call.
         # Because setup_class can be called before commissioning, this variable is lazy-initialized
         # where the read is deferred until the first guard function call that requires global attributes.
@@ -1479,6 +1477,13 @@ def pics_guard(self, pics_condition: bool):
             self.mark_current_step_skipped()
         return pics_condition
 
+    async def _populate_wildcard(self):
+        """ Populates self.stored_global_wildcard if not already filled. """
+        if self.stored_global_wildcard is None:
+            global_wildcard = asyncio.wait_for(self.default_controller.Read(self.dut_node_id, [(Clusters.Descriptor), Attribute.AttributePath(None, None, GlobalAttributeIds.ATTRIBUTE_LIST_ID), Attribute.AttributePath(
+                None, None, GlobalAttributeIds.FEATURE_MAP_ID), Attribute.AttributePath(None, None, GlobalAttributeIds.ACCEPTED_COMMAND_LIST_ID)]), timeout=60)
+            self.stored_global_wildcard = await global_wildcard
+
     async def attribute_guard(self, endpoint: int, attribute: ClusterObjects.ClusterAttributeDescriptor):
         """Similar to pics_guard above, except checks a condition and if False marks the test step as skipped and
            returns False using attributes against attributes_list, otherwise returns True.
@@ -1492,8 +1497,7 @@ async def attribute_guard(self, endpoint: int, attribute: ClusterObjects.Cluster
               if self.attribute_guard(condition2_needs_to_be_false_to_skip_step):
                   # skip step 2 if condition not met
            """
-        if self.stored_global_wildcard is None:
-            self.stored_global_wildcard = await self.global_wildcard
+        await self._populate_wildcard()
         attr_condition = _has_attribute(wildcard=self.stored_global_wildcard, endpoint=endpoint, attribute=attribute)
         if not attr_condition:
             self.mark_current_step_skipped()
@@ -1512,8 +1516,7 @@ async def command_guard(self, endpoint: int, command: ClusterObjects.ClusterComm
               if self.command_guard(condition2_needs_to_be_false_to_skip_step):
                   # skip step 2 if condition not met
            """
-        if self.stored_global_wildcard is None:
-            self.stored_global_wildcard = await self.global_wildcard
+        await self._populate_wildcard()
         cmd_condition = _has_command(wildcard=self.stored_global_wildcard, endpoint=endpoint, command=command)
         if not cmd_condition:
             self.mark_current_step_skipped()
@@ -1532,8 +1535,7 @@ async def feature_guard(self, endpoint: int, cluster: ClusterObjects.ClusterObje
               if self.feature_guard(condition2_needs_to_be_false_to_skip_step):
                   # skip step 2 if condition not met
            """
-        if self.stored_global_wildcard is None:
-            self.stored_global_wildcard = await self.global_wildcard
+        await self._populate_wildcard()
         feat_condition = _has_feature(wildcard=self.stored_global_wildcard, endpoint=endpoint, cluster=cluster, feature=feature_int)
         if not feat_condition:
             self.mark_current_step_skipped()