LayoutTests/fast/dom/MutationObserver/observe-options-attributes.html - Issue 1158433004: Remove Attr child nodes (making Attr a Node, not a ContainerNode)

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Issue 1158433004: Remove Attr child nodes (making Attr a Node, not a ContainerNode) (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: address feedback Created 5 years, 6 months ago

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1 <!DOCTYPE html>

2 <script src="../../../resources/js-test.js"></script>

3 <script>

4

5 description('Test MutationObserver.observe options related to attributes');

6

7 var observer = new MutationObserver(function() {});

8 var element = document.createElement('div');

9 element.setAttribute('data-test', '1');

10

11 observer.observe(element, {attributeOldValue: true});

12 element.setAttribute('data-test', '1');

13 var records = observer.takeRecords();

14 shouldBe('records.length', '1');

15 shouldBeEqualToString('records[0].oldValue', '1');

16 observer.disconnect();

17

18 observer.observe(element, {attributeOldValue: false});

19 element.setAttribute('data-test', '1');

20 var records = observer.takeRecords();

21 shouldBe('records.length', '1');

22 shouldBeNull('records[0].oldValue');

23 observer.disconnect();

24

25 observer.observe(element, {attributeFilter: ['data-test']});

26 element.setAttribute('data-test', '2');

27 var records = observer.takeRecords();

28 shouldBe('records.length', '1');

29 shouldBeNull('records[0].oldValue');

30 observer.disconnect();

31

32 </script>

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