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<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Element Timing: observe element with multiple background images</title>
<body>
<style>
body {
margin: 0;
}
#target {
width: 200px;
height: 200px;
background-image: url('resources/circle.svg'), url('resources/square100.png');
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/element-timing-helpers.js"></script>
<script>
let beforeRender = performance.now();
async_test(function (t) {
assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented");
let numObservedElements = 0;
let observedCircle = false;
let observedSquare = false;
const pathPrefix = window.location.origin + '/element-timing/resources/';
let div = document.getElementById('target');
const observer = new PerformanceObserver(
t.step_func(entryList => {
entryList.getEntries().forEach(entry => {
numObservedElements++;
if (entry.url.endsWith('square100.png')) {
observedSquare = true;
checkElement(entry, pathPrefix + 'square100.png', 'multi', 'target', beforeRender, div);
checkRect(entry, [0, 200, 0, 200]);
checkNaturalSize(entry, 100, 100);
}
else if (entry.url.endsWith('circle.svg')) {
observedCircle = true;
checkElement(entry, pathPrefix + 'circle.svg', 'multi', 'target', beforeRender, div);
checkRect(entry, [0, 200, 0, 200]);
checkNaturalSize(entry, 200, 200);
}
else {
assert_unreached("Should not have observed an entry with different url!");
}
if (numObservedElements === 2) {
assert_true(observedCircle);
assert_true(observedSquare);
t.done();
}
});
})
);
observer.observe({entryTypes: ['element']});
}, 'Element with two background images receives both.');
</script>
<div id='target' elementtiming='multi'></div>
</body>
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