Worked on validation hardening and end-to-end test coverage for the SelectOneRadio component in the primefaces/primefaces repository. Addressed a bug by preventing the submission of disabled items, updating the SelectRenderer to throw a validation exception when such items are submitted. Enhanced data integrity by adding an integration test to verify this scenario and refreshed both the test page and test class to ensure reliable regression coverage. Utilized Java and xhtml within a JavaServer Faces (JSF) context, focusing on back-end development and integration testing. These changes improved form reliability and user experience for applications leveraging SelectOneRadio in PrimeFaces.