don't send event when value doesn't change

2020-03-25 17:59:00 +01:00
parent 0e19a40968
commit 14382e012f
2 changed files with 23 additions and 5 deletions
--- a/test/property/test_property_stack.py
+++ b/test/property/test_property_stack.py
@ -167,3 +167,21 @@ class PropertyStackTest(TestCase):

        layer["testkey"] = "after"
        mock.method.assert_not_called()
+
+    def testReplaceLayerNoEventWhenValueUnchanged(self):
+        fixed = PropertyLayer()
+        fixed["testkey"] = "fixed value"
+        first_layer = PropertyLayer()
+        first_layer["testkey"] = "same value"
+        second_layer = PropertyLayer()
+        second_layer["testkey"] = "same value"
+
+        stack = PropertyStack()
+        stack.addLayer(1, fixed)
+        stack.addLayer(0, first_layer)
+        mock = Mock()
+        stack.wire(mock.method)
+        mock.method.assert_not_called()
+
+        stack.replaceLayer(0, second_layer)
+        mock.method.assert_not_called()