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don't send event when value doesn't change

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This commit is contained in:
Jakob Ketterl 2020-03-25 17:59:00 +01:00
parent 0e19a40968
commit 14382e012f
2 changed files with 23 additions and 5 deletions
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18
test/property/test_property_stack.py
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@ -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()