handle deletions correctly

2021-03-06 23:48:31 +01:00
parent e0985c3802
commit 161408dbf4
2 changed files with 16 additions and 3 deletions
--- a/test/property/test_property_stack.py
+++ b/test/property/test_property_stack.py
@ -215,3 +215,14 @@ class PropertyStackTest(TestCase):
        ps.wire(mock.method)
        del low_pm["testkey"]
        mock.method.assert_called_once_with({"testkey": PropertyDeleted})
+
+    def testChangeEventWhenKeyDeleted(self):
+        ps = PropertyStack()
+        low_pm = PropertyLayer(testkey="lowvalue")
+        high_pm = PropertyLayer(testkey="highvalue")
+        ps.addLayer(0, high_pm)
+        ps.addLayer(1, low_pm)
+        mock = Mock()
+        ps.wire(mock.method)
+        del high_pm["testkey"]
+        mock.method.assert_called_once_with({"testkey": "lowvalue"})