sandbox-window-open-srcdoc.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/sandboxing/sandbox-window-open-srcdoc.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<title>window.open("about:srcdoc") from a sandboxed iframe</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<body>

<script>

// Check what happens when executing window.open("about:srcdoc") from a

// sandboxed iframe. Srcdoc can't be loaded in the main frame. It should

// result in an error page. The error page should be cross-origin with the

// opener.

//

// This test covers an interesting edge case. A main frame should inherit

// sandbox flags. However the document loaded is an internal error page. This

// might trigger some assertions, especially if the implementation wrongly

// applies the sandbox flags of the opener to the internal error page document.

//

// This test is mainly a coverage test. It passes if it doesn't crash.

async_test(test => {

  let iframe = document.createElement("iframe");

  iframe.sandbox = "allow-scripts allow-popups allow-same-origin";

  iframe.srcdoc = `

    <script>

      let w = window.open();

      onunload = () => w.close();

      let notify = () => {

        try {

          w.origin; // Will fail after navigating to about:srcdoc.

          parent.postMessage("pending", "*");

        } catch (e) {

          parent.postMessage("done", "*");

};

};

      addEventListener("message", notify);

      notify();

      w.location = "about:srcdoc"; // Error page.

    </scr`+`ipt>

`;

  let closed = false;

  addEventListener("message", event => {

    closed = (event.data === "done");

    iframe.contentWindow.postMessage("ping","*");

});

  document.body.appendChild(iframe);

  test.step_wait_func_done(()=>closed);

}, "window.open('about:srcdoc') from sandboxed srcdoc doesn't crash.");

</script>