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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test requesting lock on the initial about:blank</title>
<link rel="help" href="https://bugzilla.mozilla.org/1882344"/>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<script>
add_task(async function test() {
const iframe = document.createElement('iframe');
iframe.src = "file_empty.html";
document.documentElement.appendChild(iframe);
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-window-object:initialise-the-document-object
is(iframe.contentWindow.location.href, "about:blank", "Initial about:blank is loaded");
let lock;
try {
// request lock on initial about:blank
lock = await iframe.contentWindow.navigator.wakeLock.request();
} catch (err) {
// This could happen if the initial about:blank document is inactive
// once the async code in .request runs.
ok(true, "request was rejected");
return;
}
if (iframe.contentWindow.location.href == "about:blank") {
await new Promise((res, _rej) => { iframe.onload = res; });
}
isnot(iframe.contentWindow.location.href, "about:blank", "Target document is loaded");
is(lock.released, true, "lock was released by load of target doc");
// window and wakeLock object stayed the same, but document changed
await iframe.contentWindow.navigator.wakeLock.request();
ok(true, "Was able to request lock on target document");
});
</script>
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>
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