test: cover chat core and session storage

tests/unit/test_settings.py

@@ -0,0 +1,39 @@
+import unittest
+from pathlib import Path
+
+from javis.config.settings import ConfigurationError, Settings, default_data_dir
+
+
+class SettingsTests(unittest.TestCase):
+    def test_windows_default_uses_local_app_data(self) -> None:
+        result = default_data_dir(
+            {"LOCALAPPDATA": "C:\\Local"},
+            platform_name="nt",
+            home=Path("C:\\Users\\test"),
+        )
+        self.assertEqual(result, Path("C:\\Local") / "Javis")
+
+    def test_posix_default_uses_xdg_data_home(self) -> None:
+        result = default_data_dir(
+            {"XDG_DATA_HOME": "/tmp/data"},
+            platform_name="posix",
+            home=Path("/home/test"),
+        )
+        self.assertEqual(result, Path("/tmp/data/javis"))
+
+    def test_explicit_data_dir_must_be_absolute(self) -> None:
+        with self.assertRaises(ConfigurationError):
+            Settings.from_env({"JAVIS_DATA_DIR": "relative"})
+
+    def test_provider_url_must_remain_local(self) -> None:
+        with self.assertRaises(ConfigurationError):
+            Settings.from_env(
+                {
+                    "JAVIS_DATA_DIR": str(Path.cwd()),
+                    "JAVIS_OLLAMA_URL": "https://example.com",
+                }
+            )
+
+
+if __name__ == "__main__":
+    unittest.main()