Add unit tests for helpers

**Feature request**
It would be great to have pagination for routes.

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

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

The issue names no files, tests, or entry points; begin by locating the route helpers and configuration handling. Confirm the intended pagination behavior, then verify that the new option defaults to false and the route behavior is covered by tests.

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