init

tests/test_config.py

@@ -0,0 +1,57 @@
+from pathlib import Path
+
+import pytest
+
+from common_cents import config
+
+
+@pytest.fixture(autouse=True)
+def isolate_config(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Path:
+    """Point XDG_CONFIG_HOME at a temp dir so tests don't touch the real config."""
+    monkeypatch.setenv("XDG_CONFIG_HOME", str(tmp_path))
+    return tmp_path
+
+
+def test_config_path_uses_xdg(isolate_config: Path) -> None:
+    assert config.config_path() == isolate_config / "common-cents" / "config.json"
+
+
+def test_load_returns_empty_when_missing() -> None:
+    assert config.load_config() == {}
+
+
+def test_load_returns_empty_on_corrupt_json(isolate_config: Path) -> None:
+    p = config.config_path()
+    p.parent.mkdir(parents=True)
+    p.write_text("{not valid json")
+    assert config.load_config() == {}
+
+
+def test_set_and_get_active_db_path(tmp_path: Path) -> None:
+    target = tmp_path / "elsewhere" / "my.db"
+    config.set_active_db_path(target)
+    assert config.get_active_db_path() == target
+
+
+def test_get_active_db_path_returns_none_when_unset() -> None:
+    assert config.get_active_db_path() is None
+
+
+def test_clear_active_db_path(tmp_path: Path) -> None:
+    target = tmp_path / "x.db"
+    config.set_active_db_path(target)
+    config.clear_active_db_path()
+    assert config.get_active_db_path() is None
+
+
+def test_clear_when_unset_is_noop() -> None:
+    config.clear_active_db_path()
+    assert config.get_active_db_path() is None
+
+
+def test_set_preserves_other_keys() -> None:
+    config.save_config({"theme": "dark"})
+    config.set_active_db_path(Path("/tmp/x.db"))
+    data = config.load_config()
+    assert data["theme"] == "dark"
+    assert data["db_path"] == "/tmp/x.db"