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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/preload/resources/preload_helper.js"></script>
<script>
var t = async_test('Makes sure that a dynamically added preload with imagesrcset works');
</script>
<body>
<script>
t.step(function() {
verifyPreloadAndRTSupport();
var expectation = new Array(4).fill(0);
if (window.devicePixelRatio < 1.5) {
expectation[2] = 1;
} else if (window.devicePixelRatio >= 1.5) {
expectation[3] = 1;
}
var link = document.createElement("link");
link.as = "image";
link.rel = "preload";
link.href = "resources/square.png?default";
link.imageSrcset = "resources/square.png?200 200w, resources/square.png?400 400w, resources/square.png?800 800w";
link.imageSizes = "400px";
link.onload = t.step_func(function() {
t.step_timeout(function() {
verifyNumberOfResourceTimingEntries("resources/square.png?default", expectation[0]);
verifyNumberOfResourceTimingEntries("resources/square.png?200", expectation[1]);
verifyNumberOfResourceTimingEntries("resources/square.png?400", expectation[2]);
verifyNumberOfResourceTimingEntries("resources/square.png?800", expectation[3]);
t.done();
}, 0);
});
document.body.appendChild(link);
});
</script>
</body>
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