Reset pipeline factory in test teardown

Added a tearDown method to TestHasWCAProvidersWithWCAProvider to reset the pipeline factory after each test. This prevents test interference by ensuring a clean state between tests.

Author: mabashian

ansible_ai_connect/main/tests/test_utils.py

@@ -23,6 +23,7 @@
 # )
 # from ansible_ai_connect.test_utils import WisdomServiceLogAwareTestCase
 
+from django.apps import apps
 from django.test import override_settings
 
 from ansible_ai_connect.ai.api.model_pipelines.tests import mock_config
@@ -32,6 +33,11 @@
 
 @override_settings(ANSIBLE_AI_MODEL_MESH_CONFIG=mock_config("wca"))
 class TestHasWCAProvidersWithWCAProvider(WisdomServiceLogAwareTestCase):
+    def tearDown(self):
+        """Reset pipeline factory to avoid test interference."""
+        apps.get_app_config("ai")._pipeline_factory = None
+        super().tearDown()
+
     def test_returns_true_with_wca_provider(self):
         """Test that has_wca_providers returns True when WCA provider is configured."""
         self.assertTrue(has_wca_providers())