third_party/WebKit/LayoutTests/shadow-dom/link-element.html - Issue 2177163002: Allow <link rel=stylesheet> in a connected shadow tree

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Side by Side Diff: third_party/WebKit/LayoutTests/shadow-dom/link-element.html

Issue 2177163002: Allow <link rel=stylesheet> in a connected shadow tree (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: wip Created 4 years, 4 months ago

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	1 <!DOCTYPE html>

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

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

	4 <body>

	5 <div id="host"></div>

	6 </body>

	7 <script>

	8 function computedBackgroundColor(elem) {

	9 return document.defaultView.getComputedStyle(elem, '').backgroundColor;

	10 }

	11

	12 async_test((test) => {

	13 let link = document.createElement('link');

	14 link.setAttribute('rel', 'stylesheet');

	15 link.setAttribute('href', 'resources/test.css');

	16 link.addEventListener("load", (e) => {

	17 test.step(() => {

	18 assert_equals(computedBackgroundColor(host), 'rgba(0, 0, 0, 0)', 'A host i n a document tree should not be styled.');
	kochi 2016/07/26 05:35:06 Having a :host rule in linked css and check if tha Having a :host rule in linked css and check if that rule is applied to host? (to check if the linked css load invalidate the original host style) hayato 2016/07/26 06:04:32 That sounds another concern. That should not be do That sounds another concern. That should not be done in this basic test.
	19 assert_equals(computedBackgroundColor(shadowChild), 'rgb(0, 0, 255)', 'An element in a shadow tree should be styled.');

	20 test.done();

	21 });

	22 });

	23 let sr = host.attachShadow({ mode: 'open' });

	24 let shadowChild = document.createElement('div');

	25 sr.appendChild(shadowChild);

	26 sr.appendChild(link);

	27 }, '<link rel=stylesheet> should load a stylesheet in a connected shadow tree.') ;

	28 </script>

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