remove-own-iframe-during-onerror.window.js

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This WPT test may be referenced by the following Test IDs:
- /websockets/remove-own-iframe-during-onerror.window.html?default - WPT Dashboard Interop Dashboard
- /websockets/remove-own-iframe-during-onerror.window.html?wpt_flags=h2 - WPT Dashboard Interop Dashboard
- /websockets/remove-own-iframe-during-onerror.window.html?wss - WPT Dashboard Interop Dashboard

// META: script=constants.sub.js

// META: timeout=long

// META: variant=?default

// META: variant=?wss

// META: variant=?wpt_flags=h2

async_test(t => {

  window.wsurl = SCHEME_DOMAIN_PORT + '/does-not-exist';

  let wsframe;

  window.wsonerror = () => {

    wsframe.remove();

    // If this didn't crash then the test passed.

    t.done();

};

  wsframe = document.createElement('iframe');

  wsframe.srcdoc = `<script>

const ws = new WebSocket(parent.wsurl);

ws.onerror = parent.wsonerror;

</script>`;

  onload = () => document.body.appendChild(wsframe);

}, 'removing an iframe from within an onerror handler should work');

done();