feat: migrate config to pydantic-settings (#65)

tests/test_config_store.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from takopi.config import ConfigError
+from takopi.config_store import read_raw_toml, write_raw_toml
+
+
+def test_read_write_raw_toml_round_trip(tmp_path: Path) -> None:
+    config_path = tmp_path / "takopi.toml"
+    payload = {
+        "default_engine": "codex",
+        "projects": {"z80": {"path": "/tmp/repo"}},
+    }
+
+    write_raw_toml(payload, config_path)
+    loaded = read_raw_toml(config_path)
+
+    assert loaded == payload
+
+
+def test_read_raw_toml_missing_file(tmp_path: Path) -> None:
+    config_path = tmp_path / "missing.toml"
+    with pytest.raises(ConfigError, match="Missing config file"):
+        read_raw_toml(config_path)
+
+
+def test_read_raw_toml_invalid_toml(tmp_path: Path) -> None:
+    config_path = tmp_path / "takopi.toml"
+    config_path.write_text("nope = [", encoding="utf-8")
+    with pytest.raises(ConfigError, match="Malformed TOML"):
+        read_raw_toml(config_path)
+
+
+def test_read_raw_toml_non_file(tmp_path: Path) -> None:
+    config_path = tmp_path / "config_dir"
+    config_path.mkdir()
+    with pytest.raises(ConfigError, match="exists but is not a file"):
+        read_raw_toml(config_path)