third_party/WebKit/LayoutTests/resources/intersection-observer-in-iframe.html - Issue 2553343004: IntersectionObserver: use nullptr for implicit root.

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Issue 2553343004: IntersectionObserver: use nullptr for implicit root. (Closed)

Patch Set: rebase Created 4 years ago

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	1 <!DOCTYPE html>

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

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

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

	5

	6 <div style="height: 200px; width: 100px;"></div>

	7 <div id="target" style="background-color: green; width:100px; height:100px"></di v>

	8 <div style="height: 200px; width: 100px;"></div>

	9

	10 <script>

	11 setup({message_events: [], output_document: window.parent.document});

	12 onload = function() {

	13 var entries = [];

	14 var observer = new IntersectionObserver(function(changes) { entries = entries. concat(changes) }, {});

	15 var target = document.getElementById("target");

	16 var scroller = document.scrollingElement;

	17 observer.observe(target);

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

	19 var t = async_test("IntersectionObserver in iframe with explicit root.");

	20 test(function() { assert_equals(entries.length, 0) }, "No initial notification s.")

	21 waitForNotification(t.step_func(step1));

	22

	23 function step1() {

	24 test(function() { assert_equals(entries.length, 0) }, "No notifications afte r first rAF.");

	25 scroller.scrollTop = 250;

	26 waitForNotification(t.step_func(step2));

	27 }

	28

	29 function step2() {

	30 test(function() { assert_equals(entries.length, 1) }, "One notification.");

	31 if (entries.length) {

	32 test(function() { assert_equals(entries[0].boundingClientRect.left, 8) }, "entries[0].boundingClientRect.left");

	33 test(function() { assert_equals(entries[0].boundingClientRect.right, 108) }, "entries[0].boundingClientRect.right");

	34 test(function() { assert_equals(entries[0].boundingClientRect.top, -42) }, "entries[0].boundingClientRect.top");

	35 test(function() { assert_equals(entries[0].boundingClientRect.bottom, 58) }, "entries[0].boundingClientRect.bottom");

	36 test(function() { assert_equals(entries[0].intersectionRect.left, 8) }, "e ntries[0].intersectionRect.left");

	37 test(function() { assert_equals(entries[0].intersectionRect.right, 108) }, "entries[0].intersectionRect.right");

	38 test(function() { assert_equals(entries[0].intersectionRect.top, 0) }, "en tries[0].intersectionRect.top");

	39 test(function() { assert_equals(entries[0].intersectionRect.bottom, 58) }, "entries[0].intersectionRect.bottom");

	40 test(function() { assert_equals(entries[0].rootBounds.left, 0) }, "entries [0].rootBounds.left");

	41 test(function() { assert_equals(entries[0].rootBounds.right, 800) }, "entr ies[0].rootBounds.right");

	42 test(function() { assert_equals(entries[0].rootBounds.top, 0) }, "entries[ 0].rootBounds.top");

	43 test(function() { assert_equals(entries[0].rootBounds.bottom, 600) }, "ent ries[0].rootBounds.bottom");

	44 test(function() { assert_true(entries[0].target === target) }, "entries[0] .target object identity");

	45 }

	46 t.done();

	47 }

	48 };

	49 </script>

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