navigation-unload-data-url.window.js

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-data-url.window.html - WPT Dashboard Interop Dashboard

// META: title=data: URL navigation started from unload handler must be ignored

// META: script=../resources/helpers.js

promise_test(async () => {

  const iframe = await addIframe();

  iframe.contentWindow.addEventListener("unload", () => {

    iframe.contentWindow.location.href =

      `data:text/html,unload<script>parent.postMessage('fail', '*');</script>`;

});

  iframe.src =

    `data:text/html,load<script>parent.postMessage('pass', '*')</script>`;

  assert_equals(await waitForMessage(iframe.contentWindow), "pass");

});