Updated Rule Parsing Tests for Improved Coverage

[NikhilNRS]

Overview

This PR updates the test suite for the rule_parsing.py module to enhance test coverage and reliability. It focuses on refining the tests for rule parsing.

Changes Made

1. Probabilistic Rule Parsing Test:

   • Revised the test for probabilistic rules to ensure accurate parsing and tuple output from the postparse function.

2. Cleanup and Documentation:

   • Eliminated redundant tests and improved comments within the test cases for better clarity and maintainability.

Purpose

These updates aim to ensure the rule parsing logic behaves as expected under various scenarios, enhancing the overall robustness of the module.