NDEFReader_scan_iframe.https.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:
- /web-nfc/NDEFReader_scan_iframe.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<title>NDEFReader.scan with an focused iframe</title>

<link rel="help" href="https://w3c.github.io/web-nfc/"/>

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

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

<script src="resources/nfc-helpers.js"></script>

<body>

<script>

nfc_test(async (t, mockNFC) => {

  const ndef = new NDEFReader();

  const controller = new AbortController();

  const ndefWatcher = new EventWatcher(t, ndef, ["reading", "readingerror"]);

  const promise = ndefWatcher.wait_for("reading").then(event => {

    assert_true(event instanceof NDEFReadingEvent);

    controller.abort();

});

  await ndef.scan({ signal: controller.signal });

  const iframe = document.createElement('iframe');

  iframe.src = 'resources/support-iframe.html';

  const iframeLoadWatcher = new EventWatcher(t, iframe, 'load');

  document.body.appendChild(iframe);

  await iframeLoadWatcher.wait_for('load');

  // Focus on iframe.

  iframe.contentWindow.document.getElementById('foo').focus();

  assert_true(iframe.contentDocument.hasFocus(), 'iframe gains the focus');

  // Suspend NFC operations is async in blink, use setTimeout as a workaround.

  // TODO(wanming.lin@intel.com): find a good way to eliminate this race

  // condition.

  await new Promise(resolve => t.step_timeout(resolve, 0));

  mockNFC.setReadingMessage(createMessage([createTextRecord(test_text_data)]));

  await promise;

  // Remove iframe from main document.

  iframe.parentNode.removeChild(iframe);

}, 'Test that NDEFReader.scan is not suspended if iframe gains focus.');

</script>

</body>