2 files changed, 109 insertions, 0 deletions
diff --git a/tests/test_configuration_profiles.py b/tests/test_configuration_profiles.py
index 898a9e7..9c72cd9 100644
--- a/tests/test_configuration_profiles.py
+++ b/tests/test_configuration_profiles.py
@@ -52,6 +52,52 @@ preserve_swapchain_image_count = false
         reparsed = ConfigurationManager.parse_toml_content_multi_profile(rendered)
         self.assertEqual(reparsed["profiles"]["flatpak:org.example.Game"]["multiplier"], 3)
 
+    def test_legacy_config_resets_to_v2_without_deleting_flatpak_state(self):
+        self.service.config_dir.mkdir(parents=True)
+        self.service.config_file_path.write_text(
+            'version = 1\n\n[global]\nallow_fp16 = false\n',
+            encoding="utf-8",
+        )
+        state_path = self.service.config_dir / "flatpak_state.json"
+        state_path.write_text('{"prepared_apps": {}}\n', encoding="utf-8")
+        backup_path = self.service.config_dir / "flatpak-overrides" / "com.example.Game.ini"
+        backup_path.parent.mkdir(parents=True)
+        backup_path.write_text("[Environment]\nKEEP=yes\n", encoding="utf-8")
+
+        result = self.service.get_game_configs()
+
+        self.assertTrue(result["success"])
+        self.assertEqual(result["games"], [])
+        self.assertEqual(result["global_config"], {"dll": "", "no_fp16": False})
+        self.assertTrue(self.service.config_file_path.read_text(encoding="utf-8").startswith("version = 2\n"))
+        self.assertEqual(self.service._get_profile_data(), self.service._default_data())
+        self.assertEqual(state_path.read_text(encoding="utf-8"), '{"prepared_apps": {}}\n')
+        self.assertEqual(backup_path.read_text(encoding="utf-8"), "[Environment]\nKEEP=yes\n")
+        self.runtime.validate_config_content.assert_not_called()
+
+    def test_unversioned_config_resets_to_v2_defaults(self):
+        self.service.config_dir.mkdir(parents=True)
+        self.service.config_file_path.write_text(
+            '[global]\nallow_fp16 = false\n',
+            encoding="utf-8",
+        )
+
+        data = self.service._get_profile_data()
+
+        self.assertEqual(data, self.service._default_data())
+        self.assertTrue(self.service.config_file_path.read_text(encoding="utf-8").startswith("version = 2\n"))
+
+    def test_future_config_version_is_preserved(self):
+        self.service.config_dir.mkdir(parents=True)
+        original = "version = 3\n\n[global]\nallow_fp16 = true\n"
+        self.service.config_file_path.write_text(original, encoding="utf-8")
+
+        result = self.service.get_game_configs()
+
+        self.assertFalse(result["success"])
+        self.assertEqual(result["error"], "unsupported lsfg-vk configuration version")
+        self.assertEqual(self.service.config_file_path.read_text(encoding="utf-8"), original)
+
     def test_game_reset_all_preserves_flatpak_profiles(self):
         self.service.update_game_config("123", "Steam Game", {"multiplier": 2})
         self.service.update_flatpak_config("org.example.Game", {"multiplier": 3})
diff --git a/tests/test_installation_config.py b/tests/test_installation_config.py
new file mode 100644
index 0000000..9ee8b43
--- /dev/null
+++ b/tests/test_installation_config.py
@@ -0,0 +1,63 @@
+import sys
+import tempfile
+import types
+import unittest
+from pathlib import Path
+from unittest.mock import Mock
+
+
+sys.modules.setdefault(
+    "decky",
+    types.SimpleNamespace(DECKY_USER_HOME="/home/deck", logger=Mock()),
+)
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "py_modules"))
+
+from lsfg_vk.config_schema import UnsupportedConfigurationVersion
+from lsfg_vk.installation import InstallationService
+
+
+class InstallationConfigTests(unittest.TestCase):
+    def setUp(self):
+        self.tempdir = tempfile.TemporaryDirectory()
+        self.home = Path(self.tempdir.name) / "home" / "deck"
+        self.home.mkdir(parents=True)
+        self.steam = Mock()
+        self.steam.find_lsfg_vk_dll.return_value = None
+        self.service = InstallationService(
+            logger=Mock(),
+            runtime_service=Mock(),
+            steam_service=self.steam,
+        )
+        self.service.user_home = self.home
+        self.service.config_dir = self.home / ".config/lsfg-vk"
+        self.service.config_file_path = self.service.config_dir / "conf.toml"
+
+    def tearDown(self):
+        self.tempdir.cleanup()
+
+    def test_installation_discards_v1_profiles_instead_of_migrating_them(self):
+        self.service.config_dir.mkdir(parents=True)
+        self.service.config_file_path.write_text(
+            'version = 1\n\n[[profile]]\nname = "Old Game"\n',
+            encoding="utf-8",
+        )
+
+        data = self.service._prepare_config()
+
+        self.assertEqual(data["profiles"], {})
+        self.assertEqual(data["global_config"], {"dll": "", "no_fp16": False})
+        self.service.log.warning.assert_called_once()
+
+    def test_installation_does_not_overwrite_a_future_config_version(self):
+        self.service.config_dir.mkdir(parents=True)
+        original = "version = 3\n\n[global]\nallow_fp16 = true\n"
+        self.service.config_file_path.write_text(original, encoding="utf-8")
+
+        with self.assertRaises(UnsupportedConfigurationVersion):
+            self.service._prepare_config()
+
+        self.assertEqual(self.service.config_file_path.read_text(encoding="utf-8"), original)
+
+
+if __name__ == "__main__":
+    unittest.main()