readonly also prevents deletion

2021-03-20 00:54:45 +01:00
parent c50473fea5
commit c58ebfa657
2 changed files with 11 additions and 0 deletions
--- a/test/property/test_property_readonly.py
+++ b/test/property/test_property_readonly.py
@ -13,3 +13,11 @@ class PropertyReadOnlyTest(TestCase):
            ro["otherkey"] = "testvalue"
        self.assertEqual(ro["testkey"], "initial value")
        self.assertNotIn("otherkey", ro)
+
+    def testPreventsDeletes(self):
+        layer = PropertyLayer(testkey="some value")
+        ro = PropertyReadOnly(layer)
+        with self.assertRaises(PropertyWriteError):
+            del ro["testkey"]
+        self.assertEqual(ro["testkey"], "some value")
+        self.assertEqual(layer["testkey"], "some value")