shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html

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This WPT test may be referenced by the following Test IDs:
- /shared-storage/shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html - WPT Dashboard Interop Dashboard

<!doctype html>

<body>

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

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

  <script src=/common/utils.js></script>

  <script src=/fenced-frame/resources/utils.js></script>

  <script src=/shared-storage/resources/util.js></script>

  <script>

    'use strict';

    const origin = window.location.origin;

    const rawSetHeader = 'set;key=hello;value=world';

    const setHeader = encodeURIComponent(rawSetHeader);

    promise_test(async t => {

      let frame = document.createElement('iframe');

      const promise = new Promise((resolve, reject) => {

        window.addEventListener('message', async function handler(evt) {

          if (evt.source === frame.contentWindow &&

              evt.data.sharedStorageWritableHeader) {

            document.body.removeChild(frame);

            window.removeEventListener('message', handler);

            resolve(evt.data.sharedStorageWritableHeader);

});

        window.addEventListener('error', (error) => {

          reject(error);

});

});

      const innerUrl =

        `${origin}\\/shared-storage\\/resources\\/shared-storage-write-`

        + `notify-parent.py?write=${setHeader}`;

      const innerCode = `

let parentOrOpener = window.opener || window.parent;

let innerFrame = document.createElement('iframe');

window.addEventListener('message', async (evt) => {

  if (evt.source === innerFrame.contentWindow &&

      evt.data.sharedStorageWritableHeader) {

    parentOrOpener.postMessage({sharedStorageWritableHeader:

                                evt.data.sharedStorageWritableHeader}, '*');

});

window.addEventListener('error', (error) => {

  parentOrOpener.postMessage({sharedStorageWritableHeader: error.message}, '*');

});

innerFrame.src = '${innerUrl}';

innerFrame.sharedStorageWritable = true;

document.body.appendChild(innerFrame);

`;

      const dataURL = 'data:text/html;base64,'

        + btoa(unescape('%3Chtml%3E%3Cbody%3E%3Cscript%3E'

                        + encodeURIComponent(innerCode) +

                        '%3C%2Fscript%3E%3C%2Fbody%3E%3C%2Fhtml%3E'));

      frame.src = dataURL;

      document.body.appendChild(frame);

      const result = await promise;

      assert_equals(result, "NO_SHARED_STORAGE_WRITABLE_HEADER");

      await verifyKeyNotFoundForOrigin('hello', origin);

    }, 'shared storage iframe request disallowed in opaque origin from data URL');

  </script>

</body>