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

tests/test_projects_config.py

@@ -4,14 +4,15 @@ import pytest
 from typer.testing import CliRunner
 
 from takopi import cli
-from takopi.config import ConfigError, parse_projects_config
+from takopi.config import ConfigError
+from takopi.settings import TakopiSettings
 
 
 def test_parse_projects_rejects_engine_alias() -> None:
     config = {"projects": {"codex": {"path": "/tmp/repo"}}}
     with pytest.raises(ConfigError, match="aliases must not match engine ids"):
-        parse_projects_config(
-            config,
+        settings = TakopiSettings.model_validate(config)
+        settings.to_projects_config(
             config_path=Path("takopi.toml"),
             engine_ids=["codex"],
             reserved=("cancel",),
@@ -21,8 +22,8 @@ def test_parse_projects_rejects_engine_alias() -> None:
 def test_parse_projects_default_project_must_exist() -> None:
     config = {"default_project": "z80", "projects": {}}
     with pytest.raises(ConfigError, match="default_project"):
-        parse_projects_config(
-            config,
+        settings = TakopiSettings.model_validate(config)
+        settings.to_projects_config(
             config_path=Path("takopi.toml"),
             engine_ids=["codex"],
             reserved=("cancel",),
@@ -47,3 +48,25 @@ def test_init_writes_project(monkeypatch, tmp_path) -> None:
     assert 'worktrees_dir = ".worktrees"' in saved
     assert 'default_engine = "codex"' in saved
     assert 'worktree_base = "main"' in saved
+
+
+def test_projects_default_engine_unknown() -> None:
+    config = {"projects": {"z80": {"path": "/tmp/repo", "default_engine": "nope"}}}
+    settings = TakopiSettings.model_validate(config)
+    with pytest.raises(ConfigError, match="projects.z80.default_engine"):
+        settings.to_projects_config(
+            config_path=Path("takopi.toml"),
+            engine_ids=["codex"],
+            reserved=("cancel",),
+        )
+
+
+def test_projects_relative_path_resolves(tmp_path: Path) -> None:
+    config_path = tmp_path / "takopi.toml"
+    settings = TakopiSettings.model_validate({"projects": {"z80": {"path": "repo"}}})
+    projects = settings.to_projects_config(
+        config_path=config_path,
+        engine_ids=["codex"],
+        reserved=("cancel",),
+    )
+    assert projects.projects["z80"].path == config_path.parent / "repo"