blob: 5d8a01b82285952ccb694fcc3a6312d4aff068d8 [file] [log] [blame]
<!DOCTYPE html>
<script src="../resources/js-test.js"></script>
<script src="helper-functions.js"></script>
<div style="width:100%; height:700px;"></div>
<div id="target" style="background-color: green; width:100px; height:100px"></div>
<div style="width:100%; height:700px;"></div>
<script>
description("Simple intersection observer test with no explicit root and one document.");
var target = document.getElementById("target");
var entries = [];
var observer = new IntersectionObserver(changes => { entries = entries.concat(changes) });
onload = function() {
observer.observe(target);
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 0);
document.scrollingElement.scrollTop = 300;
// See README for explanation of double RAF.
requestAnimationFrame(() => { requestAnimationFrame(step1) });
};
function step1() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 1);
if (entries.length > 0) {
shouldBeEqualToNumber("entries[0].boundingClientRect.left", 8);
shouldBeEqualToNumber("entries[0].boundingClientRect.right", 108);
shouldBeEqualToNumber("entries[0].boundingClientRect.top", 408);
shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 508);
shouldBeEqualToNumber("entries[0].intersectionRect.left", 8);
shouldBeEqualToNumber("entries[0].intersectionRect.right", 108);
shouldBeEqualToNumber("entries[0].intersectionRect.top", 408);
shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 508);
shouldBeEqualToNumber("entries[0].rootBounds.left", 0);
shouldBeEqualToNumber("entries[0].rootBounds.right", 785);
shouldBeEqualToNumber("entries[0].rootBounds.top", 0);
shouldBeEqualToNumber("entries[0].rootBounds.bottom", 600);
shouldEvaluateToSameObject("entries[0].target", target);
// ClientRect members of IntersectionObserverEntry should be stable.
shouldEvaluateToSameObject("entries[0].boundingClientRect", entries[0].boundingClientRect);
shouldEvaluateToSameObject("entries[0].intersectionRect", entries[0].intersectionRect);
shouldEvaluateToSameObject("entries[0].rootBounds", entries[0].rootBounds);
}
document.scrollingElement.scrollTop = 100;
requestAnimationFrame(step2);
}
function step2() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 2);
if (entries.length > 1) {
shouldBeEqualToNumber("entries[1].boundingClientRect.left", 8);
shouldBeEqualToNumber("entries[1].boundingClientRect.right", 108);
shouldBeEqualToNumber("entries[1].boundingClientRect.top", 608);
shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 708);
shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);
shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);
shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);
shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);
shouldBeEqualToNumber("entries[1].rootBounds.left", 0);
shouldBeEqualToNumber("entries[1].rootBounds.right", 785);
shouldBeEqualToNumber("entries[1].rootBounds.top", 0);
shouldBeEqualToNumber("entries[1].rootBounds.bottom", 600);
shouldEvaluateToSameObject("entries[1].target", target);
}
finishJSTest();
document.scrollingElement.scrollTop = 0;
}
</script>