blob: df0ed11617899d0b6d4c6a4fd07ebe7a26d85fe3 [file] [log] [blame]
<!DOCTYPE html>
<script src="../resources/js-test.js"></script>
<script src="helper-functions.js"></script>
<div id="root" style="display: inline-block; overflow-y: scroll; height: 200px; border: 3px solid black">
<div style="width:100px; height: 300px;"></div>
<div id="target" style="background-color: green; width:100px; height:100px"></div>
<div id="afterTarget" style="width:100px; height: 300px;"></div>
</div>
<script>
description("Test that notifications are sent correctly when root and/or target are removed from the DOM tree.");
var target = document.getElementById("target");
var afterTarget = document.getElementById("afterTarget");
var root = document.getElementById("root");
var entries = [];
var observer = new IntersectionObserver(
changes => { entries = entries.concat(changes) },
{ root: document.getElementById("root") }
);
onload = function() {
observer.observe(target);
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 0);
root.scrollTop = 150;
requestAnimationFrame(() => { requestAnimationFrame(step1) });
}
function step1() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 1);
if (entries.length > 0) {
shouldBeEqualToNumber("entries[0].boundingClientRect.left", 11);
shouldBeEqualToNumber("entries[0].boundingClientRect.right", 111);
shouldBeEqualToNumber("entries[0].boundingClientRect.top", 161);
shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 261);
shouldBeEqualToNumber("entries[0].intersectionRect.left", 11);
shouldBeEqualToNumber("entries[0].intersectionRect.right", 111);
shouldBeEqualToNumber("entries[0].intersectionRect.top", 161);
shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 211);
shouldBeEqualToNumber("entries[0].rootBounds.left", 11);
shouldBeEqualToNumber("entries[0].rootBounds.right", 111);
shouldBeEqualToNumber("entries[0].rootBounds.top", 11);
shouldBeEqualToNumber("entries[0].rootBounds.bottom", 211);
shouldEvaluateToSameObject("entries[0].target", target);
}
root.removeChild(target);
requestAnimationFrame(step2);
}
function step2() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 2);
if (entries.length > 1) {
shouldBeEqualToNumber("entries[1].boundingClientRect.left", 0);
shouldBeEqualToNumber("entries[1].boundingClientRect.right", 0);
shouldBeEqualToNumber("entries[1].boundingClientRect.top", 0);
shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 0)
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", 0);
shouldBeEqualToNumber("entries[1].rootBounds.top", 0);
shouldBeEqualToNumber("entries[1].rootBounds.bottom", 0);
shouldEvaluateToSameObject("entries[1].target", target);
}
root.scrollTop = 0;
root.insertBefore(target, afterTarget);
requestAnimationFrame(step3);
}
function step3() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 2);
root.scrollTop = 150;
requestAnimationFrame(step4);
}
function step4() {
entries = entries.concat(observer.takeRecords());
shouldBeEqualToNumber("entries.length", 3);
if (entries.length > 2) {
shouldBeEqualToNumber("entries[2].boundingClientRect.left", 11);
shouldBeEqualToNumber("entries[2].boundingClientRect.right", 111);
shouldBeEqualToNumber("entries[2].boundingClientRect.top", 161);
shouldBeEqualToNumber("entries[2].boundingClientRect.bottom", 261);
shouldBeEqualToNumber("entries[2].intersectionRect.left", 11);
shouldBeEqualToNumber("entries[2].intersectionRect.right", 111);
shouldBeEqualToNumber("entries[2].intersectionRect.top", 161);
shouldBeEqualToNumber("entries[2].intersectionRect.bottom", 211);
shouldBeEqualToNumber("entries[2].rootBounds.left", 11);
shouldBeEqualToNumber("entries[2].rootBounds.right", 111);
shouldBeEqualToNumber("entries[2].rootBounds.top", 11);
shouldBeEqualToNumber("entries[2].rootBounds.bottom", 211);
shouldEvaluateToSameObject("entries[2].target", target);
}
finishJSTest();
}
</script>