Add unit tests for parsers

**Feature request**
It would be great to have timeout for models.

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

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

The title asks for unit tests for parsers, but the body requests model timeouts through a new enable_timeout configuration option. First inspect the repository entry points for configuration parsing, model execution, and existing parser tests, then clarify which request is intended. Done should include tests covering the chosen behavior and the stated default of false.

Written by the indexing model from the issue text.