Add unit tests for ActiveBuzzerHelper

[DINES-04]

Summary

• Added comprehensive unit tests for all methods in ActiveBuzzerHelper in the Test folder
• Mocked Pi4J Pwm interface to simulate hardware
• Verified actBuzzCheck flag, tone timing, and signal toggling
• Used LogCaptor to assert expected SLF4J logs
• Preserved original source structure and documentation tags

Tested

mvn test passes locally

Reviewer Notes

Please check:

• Method call order validation (InOrder)
• Logging assertions
• Test naming and organization

[CLAassistant]

All committers have signed the CLA.

[yrlmanoharreddy]

The class name and file name should match for consistency and to follow Java conventions. In your case, they are different—please update the file name or class name accordingly to resolve this. Check the old test cases class and make the modification similar. Thank you for your interest. And also make sure your branch is upto date with main.

[leandrumartin]

If you're still open to continue working on this @DINES-04, I've taken over as the lead for the project and can help answer any questions you might have.

[DINES-04]

Sure sir