Add unit tests for data

**Description**
Currently helpers lacks proper search support.

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

**Priority**: Low/Medium

Start by locating the helpers referenced in the description and inspect how search is currently handled. Clarify whether the intended work is unit tests for data, configurable search support, or both. Done means the search behavior has sensible defaults, is configurable, and is covered by unit tests.

Written by the indexing model from the issue text.