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<!doctype html>
<title>Referrer Policy: navigating back to an about:srcdoc iframe reuses the original referrer policy</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="resources/make-html-script.js"></script>
<meta name="referrer" content="no-referrer">
<div id="log"></div>
<script>
let reportedReferrer = () => {
return new Promise(resolve => {
window.addEventListener("message", function listener(msg) {
window.removeEventListener("message", listener, false);
resolve(msg.data.referrer);
});
});
};
let iframeLoaded = iframe => {
return new Promise(resolve => {
iframe.onload = resolve;
});
};
promise_test(async t => {
// 1. Create an about:srcdoc iframe.
const iframe = document.createElement("iframe");
iframe.name = 'test_frame';
let iframe_load_1 = iframeLoaded(iframe);
let referrer_1 = reportedReferrer();
iframe.srcdoc = createScriptString(get_host_info().REMOTE_ORIGIN,
location.origin + "/custom");
document.body.appendChild(iframe);
await iframe_load_1;
let referrer_1_result = await referrer_1;
// 2. Change the referrer policy of the main document.
document.getElementsByTagName('meta')[0].content = "unsafe-url";
// 3. Navigate the iframe elsewhere.
let iframe_load_2 = iframeLoaded(iframe);
window.open('/referrer-policy', 'test_frame');
await iframe_load_2;
// 4. Navigate the iframe back.
let iframe_load_3 = iframeLoaded(iframe);
let referrer_2 = reportedReferrer();
iframe.contentWindow.history.back();
await iframe_load_3;
// Despite the main document has changed its referrer policy in (2), the
// reported referrer for the history navigation to about:srcdoc in (4) must
// match with the one originally reported in (1).
assert_equals(referrer_1_result, undefined,
"First navigation uses correct policy.");
assert_equals(await referrer_2, undefined,
"History navigation reuses original policy.");
}, "History navigation reuses original policy.");
promise_test(async t => {
// If we initiate a new about:srcdoc navigation, the new referrer policy
// should apply.
const new_iframe = document.createElement("iframe");
let new_iframe_load = iframeLoaded(new_iframe);
let new_iframe_referrer = reportedReferrer();
new_iframe.srcdoc = createScriptString(get_host_info().REMOTE_ORIGIN,
location.origin + "/custom");
document.body.appendChild(new_iframe);
await new_iframe_load;
assert_equals(await new_iframe_referrer, self.origin + '/custom');
}, "New srcdoc iframe uses new policy.");
</script>
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