fetch-in-popup-from-iframe.html

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This WPT test may be referenced by the following Test IDs:
- /fetch/api/basic/fetch-in-popup-from-iframe.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>Fetch in initial empty document popup created from iframe</title>

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

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

<body>

<script>

promise_test(async (t) => {

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

  document.body.appendChild(iframe);

  t.add_cleanup(() => iframe.remove());

  const popup = iframe.contentWindow.open();

  t.add_cleanup(() => {

    if (popup && !popup.closed) {

      popup.close();

});

  const response = await popup.fetch('../resources/top.txt');

  assert_true(response.ok, 'fetch in popup should succeed');

  const text = await response.text();

  assert_not_equals(text, '', 'response body should not be empty');

}, 'Fetch from initial empty document in popup opened from iframe');

</script>

</body>