src: python_testing: minor changes regardin controllers' id and async

* implementation of generate_random_node_id with exculdes values, the
method add possibilty to run multiple test cases within one test session
(the controllers' nodeid is the same for new controller in different
test cases)
* due to change in ChipDeviceController and usage of asyncio.Lock (which
use get_event_loop) may cause `RuntimeError: There is no current event
loop in thread 'MainThread'` while using multiple times `asyncio.run()`

Signed-off-by: Michał Szablowski <michal.szablowski@nordicsemi.no>

Author: doublemis1

src/python_testing/TC_ACE_1_2.py

@@ -30,7 +30,7 @@
 from chip.clusters.Attribute import EventReadResult, SubscriptionTransaction, TypedAttributePath
 from chip.exceptions import ChipStackError
 from chip.interaction_model import Status
-from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main
+from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main, generate_random_nodeid
 from mobly import asserts
 
 
@@ -136,7 +136,7 @@ async def test_TC_ACE_1_2(self):
         fabric_admin = self.certificate_authority_manager.activeCaList[0].adminList[0]
 
         TH1_nodeid = self.matter_test_config.controller_node_id
-        TH2_nodeid = self.matter_test_config.controller_node_id + 1
+        TH2_nodeid = generate_random_nodeid(excluded_nodeid=[self.matter_test_config.controller_node_id])
 
         self.TH2 = fabric_admin.NewController(nodeId=TH2_nodeid,
                                               paaTrustStorePath=str(self.matter_test_config.paa_trust_store_path))

src/python_testing/TC_ACE_1_3.py

@@ -26,7 +26,7 @@
 
 import chip.clusters as Clusters
 from chip.interaction_model import Status
-from matter_testing_support import MatterBaseTest, TestStep, async_test_body, default_matter_test_main
+from matter_testing_support import MatterBaseTest, TestStep, async_test_body, default_matter_test_main, generate_random_nodeid
 from mobly import asserts
 
 
@@ -137,9 +137,24 @@ async def test_TC_ACE_1_3(self):
         fabric_admin = self.certificate_authority_manager.activeCaList[0].adminList[0]
 
         TH0_nodeid = self.matter_test_config.controller_node_id
-        TH1_nodeid = self.matter_test_config.controller_node_id + 1
-        TH2_nodeid = self.matter_test_config.controller_node_id + 2
-        TH3_nodeid = self.matter_test_config.controller_node_id + 3
+        TH1_nodeid = generate_random_nodeid(
+            excluded_nodeid=[
+                TH0_nodeid
+            ]
+        )
+        TH2_nodeid = generate_random_nodeid(
+            excluded_nodeid=[
+                TH0_nodeid,
+                TH1_nodeid
+            ]
+        )
+        TH3_nodeid = generate_random_nodeid(
+            excluded_nodeid=[
+                TH0_nodeid,
+                TH1_nodeid,
+                TH2_nodeid
+            ]
+        )
 
         TH1 = fabric_admin.NewController(nodeId=TH1_nodeid,
                                          paaTrustStorePath=str(self.matter_test_config.paa_trust_store_path),

src/python_testing/TC_ACE_1_5.py

@@ -27,7 +27,7 @@
 import chip.clusters as Clusters
 from chip import ChipDeviceCtrl
 from chip.interaction_model import Status
-from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main
+from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main, generate_random_nodeid
 from mobly import asserts
 
 
@@ -53,7 +53,7 @@ async def test_TC_ACE_1_5(self):
         new_fabric_admin = new_certificate_authority.NewFabricAdmin(vendorId=0xFFF1, fabricId=self.matter_test_config.fabric_id + 1)
 
         TH1_nodeid = self.matter_test_config.controller_node_id
-        TH2_nodeid = self.matter_test_config.controller_node_id + 2
+        TH2_nodeid = generate_random_nodeid(excluded_nodeid=[TH1_nodeid])
 
         self.th2 = new_fabric_admin.NewController(nodeId=TH2_nodeid,
                                                   paaTrustStorePath=str(self.matter_test_config.paa_trust_store_path))

src/python_testing/TC_AccessChecker.py

@@ -16,7 +16,7 @@
 from chip.tlv import uint
 from global_attribute_ids import GlobalAttributeIds
 from matter_testing_support import (AttributePathLocation, ClusterPathLocation, MatterBaseTest, TestStep, async_test_body,
-                                    default_matter_test_main)
+                                    default_matter_test_main, generate_random_nodeid)
 from spec_parsing_support import XmlCluster, build_xml_clusters
 
 
@@ -66,7 +66,7 @@ async def setup_class(self):
         self._record_errors()
         # We need to run this test from two controllers so we can test access to the ACL cluster while retaining access to the ACL cluster
         fabric_admin = self.certificate_authority_manager.activeCaList[0].adminList[0]
-        self.TH2_nodeid = self.matter_test_config.controller_node_id + 1
+        self.TH2_nodeid = generate_random_nodeid(excluded_nodeid=[self.matter_test_config.controller_node_id])
         self.TH2 = fabric_admin.NewController(nodeId=self.TH2_nodeid)
 
     # Both the tests in this suite are potentially long-running if there are a large number of attributes on the DUT

src/python_testing/TC_IDM_4_2.py

@@ -24,7 +24,7 @@
 from chip.clusters.Attribute import AttributePath, TypedAttributePath
 from chip.exceptions import ChipStackError
 from chip.interaction_model import Status
-from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main
+from matter_testing_support import MatterBaseTest, async_test_body, default_matter_test_main, generate_random_nodeid
 from mobly import asserts
 
 '''
@@ -134,7 +134,11 @@ async def test_TC_IDM_4_2(self):
         # Subscriber/client with limited access to the DUT
         # Will validate error status codes
         fabric_admin = self.certificate_authority_manager.activeCaList[0].adminList[0]
-        CR2_nodeid = self.matter_test_config.controller_node_id + 1
+        CR2_nodeid = generate_random_nodeid(
+            excluded_nodeid=[
+                self.matter_test_config.controller_node_id
+            ]
+        )
         CR2: ChipDeviceController = fabric_admin.NewController(
             nodeId=CR2_nodeid,
             paaTrustStorePath=str(self.matter_test_config.paa_trust_store_path),

src/python_testing/matter_testing_support.py

@@ -1492,19 +1492,35 @@ def parse_matter_test_args(argv: Optional[List[str]] = None) -> MatterTestConfig
 
     return convert_args_to_matter_config(parser.parse_known_args(argv)[0])
 
+def async_to_sync(awaitable):
+    "Call sync, the async function."
+    # Usage of new implementation of ChipDeviceController cause the necessary to not use asyncio.run,
+    # because the initialization of `asyncio.Lock` use the `asyncio.get_event_loop()` on init.
+    # Usage of `asyncio.run()` and `asyncio.get_event_loop()` are exclusive.
+    loop = asyncio.get_event_loop()
+    return loop.run_until_complete(awaitable)
+
+def generate_random_nodeid(excluded_nodeid: typing.Optional[typing.List] = None) -> int:
+    if excluded_nodeid:
+        while True:
+            node_id=random.randint(0, 2^64-1)
+            if node_id not in excluded_nodeid:
+                return node_id
+    else:
+        return random.randint(0, 2^64-1)
 
 def async_test_body(body):
     """Decorator required to be applied whenever a `test_*` method is `async def`.
 
     Since Mobly doesn't support asyncio directly, and the test methods are called
     synchronously, we need a mechanism to allow an `async def` to be converted to
-    a asyncio-run synchronous method. This decorator does the wrapping.
+    a synchronous method using asyncio's event loop. This decorator does the wrapping.
     """
 
     def async_runner(self: MatterBaseTest, *args, **kwargs):
         timeout = self.matter_test_config.timeout if self.matter_test_config.timeout is not None else self.default_timeout
         runner_with_timeout = asyncio.wait_for(body(self, *args, **kwargs), timeout=timeout)
-        return asyncio.run(runner_with_timeout)
+        return async_to_sync(runner_with_timeout)
 
     return async_runner
 
@@ -1523,7 +1539,7 @@ def test_run_commissioning(self):
                          (conf.root_of_trust_index, conf.fabric_id, node_id))
             logging.info("Commissioning method: %s" % conf.commissioning_method)
 
-            if not asyncio.run(self._commission_device(commission_idx)):
+            if not async_to_sync(self._commission_device(commission_idx)):
                 raise signals.TestAbortAll("Failed to commission node")
 
     async def _commission_device(self, i) -> bool: