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Test Info: Warnings
- This test has a WPT meta file that expects 2 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /preload/modulepreload-as.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// Compared to modulepreload.html, this tests behavior when elements are
// initially on an HTML page instead of being added by Javascript.
const scriptLikes = [
'audioworklet',
'paintworklet',
'script',
'serviceworker',
'sharedworker',
'worker',
];
const goodAsValues = ['', 'invalid-dest', 'sCrIpT', 'style', 'json', ...scriptLikes];
const linkPromises = {};
function handleEvent(target, type) {
const asValue = target.dataset.as;
if (!linkPromises[asValue]) {
linkPromises[asValue] = {};
linkPromises[asValue].promise = new Promise((resolve) => {
linkPromises[asValue].resolve = resolve;
});
}
linkPromises[asValue].resolve({ target, eventType: type });
}
</script>
<link rel="modulepreload" href="resources/module1.js?empty-string" as="" data-as="" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?audio" as="audio" data-as="audio" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?audioworklet" as="audioworklet" data-as="audioworklet" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?document" as="document" data-as="document" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?embed" as="embed" data-as="embed" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?font" as="font" data-as="font" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?frame" as="frame" data-as="frame" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?iframe" as="iframe" data-as="iframe" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?image" as="image" data-as="image" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?manifest" as="manifest" data-as="manifest" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?object" as="object" data-as="object" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?paintworklet" as="paintworklet" data-as="paintworklet" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?report" as="report" data-as="report" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?script" as="script" data-as="script" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?serviceworker" as="serviceworker" data-as="serviceworker" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?sharedworker" as="sharedworker" data-as="sharedworker" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?track" as="track" data-as="track" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?video" as="video" data-as="video" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?webidentity" as="webidentity" data-as="webidentity" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?worker" as="worker" data-as="worker" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?xslt" as="xslt" data-as="xslt" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?fetch" as="fetch" data-as="fetch" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?invalid-dest" as="invalid-dest" data-as="invalid-dest" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?iMaGe" as="iMaGe" data-as="iMaGe" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/module1.js?sCrIpT" as="sCrIpT" data-as="sCrIpT" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/dummy.css?style" as="style" data-as="style" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<link rel="modulepreload" href="resources/dummy.json?json" as="json" data-as="json" onload="handleEvent(this, 'load')" onerror="handleEvent(this, 'error')">
<script>
const links = document.querySelectorAll('link[rel="modulepreload"]');
for (const link of links) {
const asValue = link.dataset.as;
// Ensure promise exists (in case the event hasn't fired yet).
if (!linkPromises[asValue]) {
linkPromises[asValue] = {};
linkPromises[asValue].promise = new Promise((resolve) => {
linkPromises[asValue].resolve = resolve;
});
}
const shouldSucceed = goodAsValues.includes(asValue);
const description = shouldSucceed
? `Modulepreload should fire onload with as="${asValue}"`
: `Modulepreload should fire onerror with as="${asValue}"`;
promise_test(async t => {
const { eventType } = await linkPromises[asValue].promise;
if (shouldSucceed) {
assert_equals(eventType, 'load', 'Expected onload to fire');
} else {
assert_equals(eventType, 'error', 'Expected onerror to fire');
}
}, description);
}
</script>
<body>