[Bugfix][Failing Test] Fix test_events.py (#18460)

Signed-off-by: rabi <ramishra@redhat.com>

.buildkite/test-pipeline.yaml

@@ -138,6 +138,7 @@ steps:
   - vllm/core/
   - tests/distributed/test_utils
   - tests/distributed/test_pynccl
+  - tests/distributed/test_events
   - tests/spec_decode/e2e/test_integration_dist_tp4
   - tests/compile/test_basic_correctness
   - examples/offline_inference/rlhf.py
@@ -156,6 +157,7 @@ steps:
   - pytest -v -s distributed/test_utils.py
   - pytest -v -s compile/test_basic_correctness.py
   - pytest -v -s distributed/test_pynccl.py
+  - pytest -v -s distributed/test_events.py
   - pytest -v -s spec_decode/e2e/test_integration_dist_tp4.py
   # TODO: create a dedicated test section for multi-GPU example tests
   # when we have multiple distributed example tests

tests/distributed/test_events.py

@@ -119,13 +119,12 @@ def test_topic_filtering(publisher_config):
     """
     publisher_config.replay_endpoint = None
 
-    cfg = publisher_config.model_copy()
-    cfg.topic = "foo"
-    pub = EventPublisherFactory.create(cfg)
+    publisher_config.topic = "foo"
+    pub = EventPublisherFactory.create(publisher_config)
 
     from .conftest import MockSubscriber
-    sub_foo = MockSubscriber(cfg.endpoint, None, "foo")
-    sub_bar = MockSubscriber(cfg.endpoint, None, "bar")
+    sub_foo = MockSubscriber(publisher_config.endpoint, None, "foo")
+    sub_bar = MockSubscriber(publisher_config.endpoint, None, "bar")
 
     try:
         time.sleep(0.1)