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<!DOCTYPE html>
<meta charset="utf-8">
<title><a download> triggered download in sandbox is allowed by allow-downloads.</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/#attr-iframe-sandbox">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-iframe-element">
<script src="/common/utils.js"></script>
<script src="/resources/testharness.js"></script>
<script src='/resources/testharnessreport.js'></script>
<script src="support/iframe_sandbox_download_helper.js"></script>
<body>
<script>
"use strict";
const attributes_list = [
'',
'target="_blank"',
'target="_blank" rel="noopener"',
];
const download_flags = [false, true];
attributes_list.forEach(attributes =>
download_flags.forEach(download_flag =>
async_test(t => {
const download_token = token();
let iframe = document.createElement("iframe");
iframe.srcdoc = `<a ${attributes}>Download</a>`;
iframe.sandbox = "allow-same-origin allow-popups allow-downloads";
iframe.addEventListener('load', t.step_func(function () {
if (attributes !== '' || download_flag) {
// Specifiying `download` or a `target` should not trigger a
// navigation in this iframe.
iframe.contentWindow.addEventListener(
"unload", t.unreached_func("Unexpected navigation."));
}
let anchor = iframe.contentDocument.getElementsByTagName('a')[0];
anchor.href = "support/download_stash.py?token=" + download_token;
if (download_flag) anchor.download = null;
anchor.click();
AssertDownloadSuccess(t, download_token, DownloadVerifyDelay());
}), { once: true });
document.body.appendChild(iframe);
}, `<a ${attributes} ${download_flag ? "download" : ""}> triggered ` +
`download in sandbox is allowed by allow-downloads.`)));
</script>
</body>
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