mirror of
https://github.com/servo/servo.git
synced 2025-07-13 10:23:40 +01:00
61 lines
2.1 KiB
HTML
61 lines
2.1 KiB
HTML
<!doctype html>
|
|
<meta charset=utf-8>
|
|
<title>Verify behavior of 'lazyload' attribute state 'OFF' when the feature policy 'lazyload' is
|
|
disabled.
|
|
</title>
|
|
<link rel="stylesheet" href="/feature-policy/experimental-features/resources/lazyload-image.css">
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
<script src="/feature-policy/experimental-features/resources/common.js"></script>
|
|
<style>
|
|
body {
|
|
width: 100%;
|
|
height: 100%;
|
|
}
|
|
|
|
img {
|
|
width: 200px;
|
|
height: 200px;
|
|
border: solid 1px black;
|
|
}
|
|
|
|
#image-container {
|
|
position: absolute;
|
|
top: 10000px;
|
|
}
|
|
</style>
|
|
<body>
|
|
<p>Image inserted further below.</p>
|
|
<div id="image-container">
|
|
<img id="off" lazyload="off" src="http://{{hosts[alt][www1]}}:{{ports[http][0]}}/feature-policy/experimental-features/resources/lazyload.png"></img>
|
|
<img id="auto" lazyload="auto" src="http://{{hosts[alt][www2]}}:{{ports[http][0]}}/feature-policy/experimental-features/resources/lazyload.png"></img>
|
|
</div>
|
|
<script>
|
|
var img_off = document.getElementById("off");
|
|
var img_auto = document.getElementById("auto");
|
|
[window, img_off, img_auto].forEach((target) => {
|
|
target.load_complete = wait_for_load(target).then(() => target.did_load = true );
|
|
});
|
|
|
|
function images_loaded() {
|
|
return img_off.did_load && img_auto.did_load;
|
|
}
|
|
|
|
function same_load_state() {
|
|
return img_off.did_load === img_auto.did_load;
|
|
}
|
|
|
|
// Verifies that "off" and "auto" behave the same for out-of-view images.
|
|
promise_test(async(t) => {
|
|
await window.load_complete;
|
|
assert_true(same_load_state(), "Expected same loading state for both images.");
|
|
}, "When the 'lazyload' feature is disabled, lazyload=OFF and lazyload=AUTO behave the same.");
|
|
|
|
// Verifies that images with attributes "off" and "auto" load after the images get into view.
|
|
promise_test(async(t) => {
|
|
document.getElementById("image-container").scrollIntoView();
|
|
await img_off.load_complete;
|
|
await img_auto.load_complete;
|
|
}, "Sanity-check: Verify that all images load after they are scrolled into view.");
|
|
</script>
|
|
</body>
|