Test suite executed from CI pipeline (#433)

* Test strategy & test cases

* Unit tests

* Integration tests

tests/unit/test_base/test_async_processor.py

@@ -0,0 +1,58 @@
+"""
+Unit tests for trustgraph.base.async_processor
+Starting small with a single test to verify basic functionality
+"""
+
+import pytest
+from unittest.mock import AsyncMock, MagicMock, patch
+from unittest import IsolatedAsyncioTestCase
+
+# Import the service under test
+from trustgraph.base.async_processor import AsyncProcessor
+
+
+class TestAsyncProcessorSimple(IsolatedAsyncioTestCase):
+    """Test AsyncProcessor base class functionality"""
+
+    @patch('trustgraph.base.async_processor.PulsarClient')
+    @patch('trustgraph.base.async_processor.Consumer')
+    @patch('trustgraph.base.async_processor.ProcessorMetrics')
+    @patch('trustgraph.base.async_processor.ConsumerMetrics')
+    async def test_async_processor_initialization_basic(self, mock_consumer_metrics, mock_processor_metrics, 
+                                                       mock_consumer, mock_pulsar_client):
+        """Test basic AsyncProcessor initialization"""
+        # Arrange
+        mock_pulsar_client.return_value = MagicMock()
+        mock_consumer.return_value = MagicMock()
+        mock_processor_metrics.return_value = MagicMock()
+        mock_consumer_metrics.return_value = MagicMock()
+        
+        config = {
+            'id': 'test-async-processor',
+            'taskgroup': AsyncMock()
+        }
+
+        # Act
+        processor = AsyncProcessor(**config)
+
+        # Assert
+        # Verify basic attributes are set
+        assert processor.id == 'test-async-processor'
+        assert processor.taskgroup == config['taskgroup']
+        assert processor.running == True
+        assert hasattr(processor, 'config_handlers')
+        assert processor.config_handlers == []
+        
+        # Verify PulsarClient was created
+        mock_pulsar_client.assert_called_once_with(**config)
+        
+        # Verify metrics were initialized
+        mock_processor_metrics.assert_called_once()
+        mock_consumer_metrics.assert_called_once()
+        
+        # Verify Consumer was created for config subscription
+        mock_consumer.assert_called_once()
+
+
+if __name__ == '__main__':
+    pytest.main([__file__])