Refactor test cases for improved readability and consistency

- Adjusted function signatures in various test files to enhance clarity by aligning parameters.
- Updated patching syntax for better readability across test cases.
- Improved formatting and spacing in test assertions and mock setups.
- Ensured consistent use of async/await patterns in async test functions.
- Enhanced comments for better understanding of test intentions.

tests/services/test_extraction_processor.py

@@ -29,7 +29,9 @@ class TestExtractionProcessor:
         """Test starting and stopping the processor."""
         # Mock the _process_queue method to avoid actual processing
         with patch.object(
-            processor, "_process_queue", new_callable=AsyncMock,
+            processor,
+            "_process_queue",
+            new_callable=AsyncMock,
         ):
             # Start the processor
             await processor.start()
@@ -229,7 +231,9 @@ class TestExtractionProcessor:
                 "app.services.extraction_processor.AsyncSession",
             ) as mock_session_class,
             patch.object(
-                processor, "_process_single_extraction", new_callable=AsyncMock,
+                processor,
+                "_process_single_extraction",
+                new_callable=AsyncMock,
             ),
             patch(
                 "app.services.extraction_processor.ExtractionService",
@@ -274,7 +278,9 @@ class TestExtractionProcessor:
                 "app.services.extraction_processor.AsyncSession",
             ) as mock_session_class,
             patch.object(
-                processor, "_process_single_extraction", new_callable=AsyncMock,
+                processor,
+                "_process_single_extraction",
+                new_callable=AsyncMock,
             ),
             patch(
                 "app.services.extraction_processor.ExtractionService",