Add unit tests for operator.py - #589

Under this PR, I have added comprehensive unit tests for the operator.py file as requested in issue #555.

Overview

The operator.py file is responsible for loading operators from the configuration file, importing their modules, and initializing them. My unit tests ensure that this functionality works correctly.

Changes I Made

1. Created a new test file tests/feluda_unit_tests/test_operator.py that includes tests for:

   • Operator initialization
   • Setting up operators from configuration
   • Handling empty operator lists
   • Getting active operators
   • Error handling for import errors
   • Error handling for initialization errors

2. Used unittest and mock to test the functionality without actual imports

3. Followed the project's existing testing patterns and style conventions

This PR helps improve the overall test coverage of the codebase and ensures that the operator module works as expected.

Testing

All tests pass using

uv run -m unittest discover -s tests/feluda_unit_tests -p 'test_*.py'

Closes #555