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<!DOCTYPE html>
<script src="../resources/js-test.js"></script>
<script src="helper-functions.js"></script>
<style>
#root {
width: 200px;
height: 200px;
overflow-y: scroll;
}
#target {
width: 100px;
height: 100px;
background-color: green;
position: absolute;
}
</style>
<div id="root" style="position: absolute">
<div id="target" style="left: 50px; top: 250px"></div>
</div>
<script>
description("Test that no notifications are generated when root is not in the containing block chain of target.");
var root = document.getElementById("root");
var target = document.getElementById("target");
var entries = [];
function observer_callback(changes) {
changes.forEach(function(e) { entries.push(e) });
}
new IntersectionObserver(observer_callback, {root: root}).observe(target);
function step0() {
setTimeout(function() {
shouldBeEqualToNumber("entries.length", 0);
target.style.top = "10px";
requestAnimationFrame(step1);
});
}
function step1() {
setTimeout(function() {
shouldBeEqualToNumber("entries.length", 1);
shouldBeEqualToNumber("entries[0].boundingClientRect.left", 58);
shouldBeEqualToNumber("entries[0].boundingClientRect.right", 158);
shouldBeEqualToNumber("entries[0].boundingClientRect.top", 18);
shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 118);
shouldBeEqualToNumber("entries[0].intersectionRect.left", 58);
shouldBeEqualToNumber("entries[0].intersectionRect.right", 158);
shouldBeEqualToNumber("entries[0].intersectionRect.top", 18);
shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 118);
shouldBeEqualToNumber("entries[0].rootBounds.left", 8);
shouldBeEqualToNumber("entries[0].rootBounds.right", 193);
shouldBeEqualToNumber("entries[0].rootBounds.top", 8);
shouldBeEqualToNumber("entries[0].rootBounds.bottom", 208);
shouldEvaluateToSameObject("entries[0].target", target);
target.style.top = "250px";
requestAnimationFrame(step2);
});
}
function step2() {
setTimeout(function() {
shouldBeEqualToNumber("entries.length", 2);
shouldBeEqualToNumber("entries[1].boundingClientRect.left", 58);
shouldBeEqualToNumber("entries[1].boundingClientRect.right", 158);
shouldBeEqualToNumber("entries[1].boundingClientRect.top", 258);
shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", 358);
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", 8);
shouldBeEqualToNumber("entries[1].rootBounds.right", 193);
shouldBeEqualToNumber("entries[1].rootBounds.top", 8);
shouldBeEqualToNumber("entries[1].rootBounds.bottom", 208);
shouldEvaluateToSameObject("entries[1].target", target);
root.style.position = "static";
target.style.top = "10px";
requestAnimationFrame(step3);
});
}
function step3() {
setTimeout(function() {
shouldBeEqualToNumber("entries.length", 2);
target.style.top = "250px";
requestAnimationFrame(step4);
});
}
function step4() {
setTimeout(function() {
shouldBeEqualToNumber("entries.length", 2);
finishJSTest();
});
}
step0();
</script>
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