Initial commit with translated description

tests/test_defaults_permissions.py

@@ -0,0 +1,32 @@
+import os
+import stat
+import tempfile
+import unittest
+from pathlib import Path
+
+import scripts.tesla as tesla
+
+
+class DefaultsPermissionsTests(unittest.TestCase):
+    def test_save_defaults_sets_0600_permissions_best_effort(self):
+        # On Windows this may not apply; but this repo targets macOS/Linux.
+        if os.name != "posix":
+            self.skipTest("POSIX-only permissions")
+
+        with tempfile.TemporaryDirectory() as td:
+            p = Path(td) / "defaults.json"
+
+            # Patch the module-level DEFAULTS_FILE for this test.
+            old = tesla.DEFAULTS_FILE
+            try:
+                tesla.DEFAULTS_FILE = p
+                tesla.save_defaults({"default_car": "Test"})
+
+                mode = stat.S_IMODE(p.stat().st_mode)
+                self.assertEqual(mode, 0o600)
+            finally:
+                tesla.DEFAULTS_FILE = old
+
+
+if __name__ == "__main__":
+    unittest.main()