third_party/WebKit/LayoutTests/intersection-observer/shadow-content.html - Issue 2298933003: [IntersectionObserver] Enable observations across shadow DOM roots.

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Side by Side Diff: third_party/WebKit/LayoutTests/intersection-observer/shadow-content.html

Issue 2298933003: [IntersectionObserver] Enable observations across shadow DOM roots. (Closed)

Patch Set: Created 4 years, 3 months ago

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	1 <!DOCTYPE html>

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

	3 <script src="../resources/intersection-observer-helper-functions.js"></script>

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

	5

	6 <script>

	7 description("Tests that observations can be made across shadow DOM boundaries.") ;

	8 var entries = [];

	9 var target;

	10 var observer = new IntersectionObserver(changes => { entries = entries.concat(ch anges) });

	11

	12 onload = function() {

	13 let shadowHost = document.getElementById("host");

	14 let shadowRoot = shadowHost.createShadowRoot();

	15 target = document.createElement('div');

	16 target.style.cssText = "background-color: green; width:100px; height:100px";

	17 shadowRoot.appendChild(target);

	18 observer.observe(target);

	19

	20 entries = entries.concat(observer.takeRecords());

	21 shouldBeEqualToNumber("entries.length", 0);

	22 waitForNotification(step1);

	23 };

	24

	25 function step1() {

	26 shouldBeEqualToNumber("entries.length", 1);

	27 if (entries.length > 0) {

	28 shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8);

	29 shouldBeEqualToNumber("entries[0].boundingClientRect.right", 108);

	30 shouldBeEqualToNumber("entries[0].boundingClientRect.top", 8);

	31 shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 108);

	32 shouldBeEqualToNumber("entries[0].intersectionRect.left", 8);

	33 shouldBeEqualToNumber("entries[0].intersectionRect.right", 108);

	34 shouldBeEqualToNumber("entries[0].intersectionRect.top", 8);

	35 shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 108);

	36 shouldBeEqualToNumber("entries[0].rootBounds.left", 0);

	37 shouldBeEqualToNumber("entries[0].rootBounds.right", 800);

	38 shouldBeEqualToNumber("entries[0].rootBounds.top", 0);

	39 shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600);

	40 shouldEvaluateToSameObject("entries[0].target", target);

	41 }

	42 finishJSTest();

	43 }

	44 </script>

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