third_party/WebKit/LayoutTests/imported/web-platform-tests/custom-elements/instantiating-custom-elements/unchanged-attribute.html - Issue 1949503002: Import web-platform-tests@88b9a65ce806b5f67e0a535bf2f1602c2df6af58

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Issue 1949503002: Import web-platform-tests@88b9a65ce806b5f67e0a535bf2f1602c2df6af58 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 7 months ago

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1 <!DOCTYPE html>

2 <meta charset=utf-8>

3 <title>Custom element's type is immutable.</title>

4 <meta name="author" title="Bon-Yong Lee" href="mailto:bylee78@gmail.com">

5 <meta name="assert" content="After a custom element is instantiated, changing th e value of the is attribute must not affect this element's custom element type." >

6 <link rel="help" href="http://w3c.github.io/webcomponents/spec/custom/#instantia ting-custom-elements">

7 <script src="../../../../resources/testharness.js"></script>

8 <script src="../../../../resources/testharnessreport.js"></script>

9 <div id="log"></div>

10 <script type="text/javascript">

11 test(function() {

12 var CustomButton = document.registerElement('custom-button', {

13 prototype: Object.create(HTMLButtonElement.prototype),

14 extends: 'button'

15 });

16 var customButton = document.createElement('button', 'custom-button');

17

18 assert_true(customButton instanceof CustomButton,

19 'A custom element is of the custom element type after ' +

20 'instantiation');

21 customButton.setAttribute('is', 'dirty');

22 assert_equals('dirty', customButton.getAttribute('is'),

23 'An attribute must be changed by method "setAttribute"');

24

25 assert_true(customButton instanceof CustomButton,

26 'A custom element is of the original custom element type even ' +

27 'after changing the \'is\' attribute');

28 }, 'After a custom element is instantiated, changing the value of the is attribu te must not affect this element\'s custom element type.');

29 </script>

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