room_cal/tests/test_config_all.py

"""Assert that config-all.json matches what gen_example_config.py produces.

Fails when a new configurable item is added (to a dataclass or to config.json)
but config-all.json hasn't been regenerated. Fix by running the pre-commit hook
or: uv run python scripts/gen_example_config.py > room_cal/config-all.json
"""
import importlib.util
from pathlib import Path

_ROOT = Path(__file__).parent.parent


def _load_generator():
  spec = importlib.util.spec_from_file_location(
    'gen_example_config',
    _ROOT / 'scripts' / 'gen_example_config.py',
  )
  mod = importlib.util.module_from_spec(spec)
  spec.loader.exec_module(mod)
  return mod


def test_config_all_is_current():
  generated = _load_generator().generate().strip()
  committed = (_ROOT / 'room_cal' / 'config-all.json').read_text(encoding='utf-8').strip()
  assert generated == committed, (
    'config-all.json is stale. '
    'Run: uv run python scripts/gen_example_config.py > room_cal/config-all.json'
  )