- Marked task 2.9 as complete in the project documentation by adding comprehensive unit tests for data collection and aggregation functionality.
- Created `test_data_collection_aggregation.py` to cover OKX data collection, real-time candle aggregation, data validation, and transformation.
- Included tests for error handling, edge cases, and performance to ensure robustness and reliability of the data processing components.
- Enhanced documentation within the test module to provide clarity on the testing approach and coverage.
