Add unit tests for services

**Description**
Currently handlers lacks proper timeout support.

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

**Priority**: Low/Medium

Start by locating the handlers and the existing service unit tests, then inspect how handlers currently manage execution time. Define configurable timeout behavior and sensible defaults, and confirm completion with unit tests covering the timeout configuration and default behavior.

Written by the indexing model from the issue text.