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Test Info:

<!--
Any copyright is dedicated to the Public Domain.
-->
<!DOCTYPE HTML>
<html>
<!--
Tests of Worker Dynamic Import (Bug 1540913)
Ensure that the script loader doesn't accidentally reorder events due to async work
done by dynamic import
-->
<head>
<title>Test for Worker Dynamic Import (Bug 1540913)</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body onload="onLoad()">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1540913">Worker Dynamic Import
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
async function onLoad() {
await SpecialPowers.pushPrefEnv(
{ set: [["dom.workers.modules.enabled", true ]] });
const workers = [
new Worker("dynamicImport_worker.js", {type: "classic"}),
new Worker("dynamicImport_worker.js", {type: "module"})
];
let successCount = 0;
for (const worker of workers) {
const events = [];
worker.onmessage = function(event) {
switch (event.data) {
case "first":
ok(events.length === 1 && events[0] === "second",
"first dynamic import returned");
events.push(event.data);
successCount++;
// Cheap way to make sure we only finish successfully after
// both the module and classic test is finished.
if (successCount == 2) {
SimpleTest.finish();
}
break;
case "second":
ok(events.length === 0,
"second dynamic import returned");
events.push(event.data);
break;
default:
ok(false, "Unexpected message:" + event.data);
SimpleTest.finish();
}
};
worker.onerror = function(event) {
ok(false, "Worker had an error:" + event.message);
SimpleTest.finish();
}
worker.postMessage("start");
}
}
</script>
</pre>
</body>
</html>