"""Tests for PathInfo in src/type_aliases.py

Per-aggregate dataclass regression-guard for the metadata_promotion_20260624 track.

CONVENTION: 1-space indentation. NO COMMENTS.
"""
from __future__ import annotations

from dataclasses import FrozenInstanceError

import pytest

from src.type_aliases import PathInfo


def test_constructor_with_kwargs() -> None:
 pi = PathInfo(logs_dir={"path": "/logs"}, scripts_dir={"path": "/scripts"}, project_root={"path": "/proj"})
 assert pi.logs_dir == {"path": "/logs"}
 assert pi.scripts_dir == {"path": "/scripts"}
 assert pi.project_root == {"path": "/proj"}


def test_field_access() -> None:
 pi = PathInfo(logs_dir={"src": "default"})
 assert pi.logs_dir == {"src": "default"}


def test_frozen_raises_on_mutation() -> None:
 pi = PathInfo()
 with pytest.raises(FrozenInstanceError):
  pi.logs_dir = {"x": 1}


def test_to_dict_roundtrip() -> None:
 pi = PathInfo(logs_dir={"a": 1}, scripts_dir={"b": 2}, project_root={"c": 3})
 d = pi.to_dict()
 assert d["logs_dir"] == {"a": 1}
 assert d["scripts_dir"] == {"b": 2}
 assert d["project_root"] == {"c": 3}


def test_default_values() -> None:
 pi = PathInfo()
 assert pi.logs_dir == {}
 assert pi.scripts_dir == {}
 assert pi.project_root == {}


def test_hashability_skipped_unhashable_dict_field() -> None:
 pi = PathInfo()
 assert pi.logs_dir == {}