Add unit tests for handlers

**Description**
Currently utils lacks proper logging support.

**Proposed solution**
Add configurable logging with sensible defaults.

**Priority**: Low/Medium

Start by locating the utils and handler entry points mentioned in the issue, then inspect any existing unit-test structure. Clarify whether the goal is to add tests for current handlers or implement configurable logging with defaults; done means the intended behavior is covered and the logging configuration works as specified.

Written by the indexing model from the issue text.