Test: Pagination._check validator crashes with ZeroDivisionError on empty results

[rajjaa-hr]

Summary

The Pagination._check root validator in tests/utils/schemas.py crashes with ZeroDivisionError whenever the API returns an empty paginated result set (maxPage=0, total=0, count=0).

The offending line:

per_page = total / max_page

max_page is 0 in this case, so the division fails before any of the assertions run.

Reproduction

Run test_job_searching_basic against a board that has no jobs (or any searching test where the result set is empty):

FAILED tests/test_job.py::test_job_searching_basic - ZeroDivisionError: division by zero

cls = <class 'tests.utils.schemas.Pagination'>
values = {'count': 0, 'facets': None, 'maxPage': 0, 'page': 1, ...}

>       per_page = total / max_page
E       ZeroDivisionError: division by zero

Scope

Pre-existing bug in the test-only validator (not in the production hrflow package). Not introduced by the pydantic v1→v2 migration — it would fail identically on v1.

Suggested fix

Short-circuit the pagination consistency checks when max_page == 0 (nothing to validate on an empty result set), or guard against the divide-by-zero directly.