firefox-main/testing/web-platform/mozilla/tests/fetch/fetchpriority/fetchpriority-urgency.h2.html

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>fetchpriority affects the urgency parameter of HTTP</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="support/priority-dependent-content.js"></script>
<link rel="stylesheet" href="support/resources/priority-dependent-content.py?as-type=style&resource-id=style_low" fetchpriority="low">
<link rel="stylesheet" href="support/resources/priority-dependent-content.py?as-type=style&resource-id=style_high" fetchpriority="high">
<link rel="stylesheet" href="support/resources/priority-dependent-content.py?as-type=style&resource-id=style_auto" fetchpriority="auto">
<link rel="stylesheet" href="support/resources/priority-dependent-content.py?as-type=style&resource-id=style_default">
<script src="support/resources/priority-dependent-content.py?as-type=script&resource-id=script_low" fetchpriority="low"></script>
<script src="support/resources/priority-dependent-content.py?as-type=script&resource-id=script_high" fetchpriority="high"></script>
<script src="support/resources/priority-dependent-content.py?as-type=script&resource-id=script_auto" fetchpriority="auto" ></script>
<script src="support/resources/priority-dependent-content.py?as-type=script&resource-id=script_default"></script>
</head>
<body>
<img src="support/resources/priority-dependent-content.py?as-type=image&resource-id=image_low" id="image_low" fetchpriority="low"/>
<img src="support/resources/priority-dependent-content.py?as-type=image&resource-id=image_high" id="image_high" fetchpriority="high"/>
<img src="support/resources/priority-dependent-content.py?as-type=image&resource-id=image_auto" id="image_auto" fetchpriority="auto"/>
<img src="support/resources/priority-dependent-content.py?as-type=image&resource-id=image_default" id="image_default"/>
<div id="urgency_square_style_low"></div>
<div id="urgency_square_style_high"></div>
<div id="urgency_square_style_auto"></div>
<div id="urgency_square_style_default"></div>
<span id="glyph_font_low" style="font: 10px font_family_low">M</span>
<span id="glyph_font_high" style="font: 10px font_family_high">M</span>
<span id="glyph_font_auto" style="font: 10px font_family_auto">M</span>
<span id="glyph_font_default" style="font: 10px font_family_default">M</span>
<script>
onload = () => {
test(function() {
// See kExpectedRequestsOfInitialLoad from image-test-data.js and
// nsHttpHandler::UrgencyFromCoSFlags.
let normalUrgency = 4;
assert_equals(getElementUrgencyFromSize("image_low"), normalUrgency + 2);
assert_equals(getElementUrgencyFromSize("image_high"), normalUrgency - 1);
assert_equals(getElementUrgencyFromSize("image_auto"), normalUrgency + 1);
assert_equals(getElementUrgencyFromSize("image_default"), normalUrgency + 1);
}, "Adjustment of urgency parameter for images");
test(function() {
// See kExpectedRequestsForScriptsInHead from script-test-data.js
// and nsHttpHandler::UrgencyFromCoSFlags.
let normalUrgency = 2;
assert_equals(getScriptUrgency("script_low"), normalUrgency + 1);
assert_equals(getScriptUrgency("script_high"), normalUrgency - 1);
assert_equals(getScriptUrgency("script_auto"), normalUrgency);
assert_equals(getScriptUrgency("script_default"), normalUrgency);
}, "Adjustment of urgency parameter for scripts");
test(function() {
// See kExpectedRequestsOfLoadStylesheet from link-tests-data.js
// and nsHttpHandler::UrgencyFromCoSFlags.
let normalUrgency = 2;
assert_equals(getStyleUrgency("style_low"), normalUrgency);
assert_equals(getStyleUrgency("style_high"), normalUrgency - 2);
assert_equals(getStyleUrgency("style_auto"), normalUrgency);
assert_equals(getStyleUrgency("style_default"), normalUrgency);
}, "Adjustment of urgency parameter for styles");
promise_test(async function() {
async function fetchAndExtractUrgency(priority) {
let request_init;
if (priority !== "default") {
request_init = {priority: priority};
}
let response = await fetch(`support/resources/priority-dependent-content.py?as-type=text&resource-id=fetch_${priority}`, request_init);
return getResourceUrgencyFromRawText(await response.text());
}
// See kExpectedRequestsOfFetchAPI from link-tests-data.js
// and nsHttpHandler::UrgencyFromCoSFlags.
let normalUrgency = 4;
assert_equals(await fetchAndExtractUrgency("low"), normalUrgency + 1);
assert_equals(await fetchAndExtractUrgency("high"), normalUrgency - 1);
assert_equals(await fetchAndExtractUrgency("auto"), normalUrgency);
assert_equals(await fetchAndExtractUrgency("default"), normalUrgency);
}, "Adjustment of urgency parameter for global fetch");
promise_test(async function() {
async function loadFontAndExtractUrgency(priority) {
let link = document.createElement("link");
if (priority != "default")
link.fetchPriority = priority;
link.rel = "preload";
link.as = "font";
link.crossOrigin = "";
await new Promise((resolve, reject) => {
link.onload = resolve;
link.onerror = reject;
link.href = `support/resources/priority-dependent-content.py?as-type=font&resource-id=font_${priority}_${token()}&use-cache=true`;
document.body.appendChild(link);
});
let response = await fetch(link.href, {cache: "force-cache"});
let font_face = new FontFace(`font_family_${priority}`,
await response.arrayBuffer());
document.fonts.add(font_face);
let size = document.getElementById(`glyph_font_${priority}`).getBoundingClientRect().width;
return convertSizeToUrgency(size);
}
// See kExpectedRequestsOfLinkPreloadFont from link-tests-data.js
// and nsHttpHandler::UrgencyFromCoSFlags.
let normalUrgency = 2;
assert_equals(await loadFontAndExtractUrgency("low"), normalUrgency + 2);
assert_equals(await loadFontAndExtractUrgency("high"), normalUrgency - 1);
assert_equals(await loadFontAndExtractUrgency("auto"), normalUrgency);
assert_equals(await loadFontAndExtractUrgency("default"), normalUrgency);
}, "Adjustment of urgency parameter for fonts");
}
</script>
</body>
</html>