Add unit tests for routes

**Feature request**
It would be great to have search for middleware.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_search` with default `false`.

The issue names no files, tests, or entry points. First clarify whether the goal is adding route unit tests or implementing middleware search, then locate the configuration and middleware handling in the repository. Done should include an agreed behavior for enable_search, its default, and tests covering the resulting functionality.

Written by the indexing model from the issue text.