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<!DOCTYPE html>
<meta charset=utf-8>
<title>Inherit sandbox flags from the initiator's response</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
// Check sandbox flags are properly inherited when a document initiate a
// navigation inside another frame that it doesn't own directly.
// This check the sandbox flags defined by the response (e.g. CSP sandbox). See
// also the other test about sandbox flags inherited from the frame.
// => sandbox-inherited-from-initiators-frame.html
// Return a promise, resolving when |element| triggers |event_name| event.
let future = (element, event_name) => {
return new Promise(resolve => {
element.addEventListener(event_name, event => resolve(event))
});
};
promise_test(async test => {
const iframe_1 = document.createElement("iframe");
const iframe_2 = document.createElement("iframe");
iframe_1.id = "iframe_1";
iframe_2.id = "iframe_2";
iframe_2.src =
"./resources/sandbox-inherited-from-initiator-response-helper.html";
// Insert |iframe_1|. It will load the initial empty document, with no sandbox
// flags.
const iframe_1_load_1 = future(iframe_1, "load");
document.body.appendChild(iframe_1);
await iframe_1_load_1;
// Insert |iframe_2|. It will load with sandbox flags. It will make |iframe_1|
// to navigate toward a data-url, which should inherit the sandbox flags.
const iframe_1_reply = future(window, "message");
document.body.appendChild(iframe_2);
const result = await iframe_1_reply;
assert_equals("sandboxed", result.data);
})
</script>
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