Create UnitTests with Pytest for all classes, functions, and scripts under MAIA/ and MAIA_scripts

[SimoneBendazzoli93]

Objective

Develop comprehensive unit tests using Pytest for all classes, functions, and scripts located in both the MAIA/ and MAIA_scripts/ directories.

Tasks

• Identify all classes and functions in MAIA/ and MAIA_scripts/
• Write Pytest-based unit tests for each class and function
• Ensure coverage for edge cases and expected failures
• Add tests for the main execution paths within scripts
• Document all tests clearly

Acceptance Criteria

• All code in MAIA/ and MAIA_scripts/ is covered by Pytest unit tests
• Tests are easy to run locally and in CI
• Tests can be executed with pytest
• PR includes documentation or comments for new tests

Additional Notes

• Use best practices for Pytest structure and assertions
• If any functionality is hard to test, document the reasons