async-promise-write-blobs-read-blobs.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:
- /clipboard-apis/async-promise-write-blobs-read-blobs.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>

  Async Clipboard write blobs -> read blobs with promise tests

</title>

<link rel="help" href="https://w3c.github.io/clipboard-apis/#async-clipboard-api">

<body>Body needed for test_driver.click()</body>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script src="resources/user-activation.js"></script>

<script>

async function loadBlob(fileName) {

  const fetched = await fetch(fileName);

  return await fetched.blob();

promise_test(async t => {

  const promise1 = new Promise((resolve, reject) => {

    resolve(loadBlob('resources/greenbox.png'));

});

  await tryGrantReadPermission();

  await tryGrantWritePermission();

  const blobText = new Blob(['test text'], {type: 'text/plain'});

  const clipboardItemInput = new ClipboardItem(

        {'text/plain' : blobText, 'image/png' : promise1});

  await waitForUserActivation();

  await navigator.clipboard.write([clipboardItemInput]);

  await waitForUserActivation();

  const clipboardItems = await navigator.clipboard.read();

  assert_equals(clipboardItems.length, 1);

  const clipboardItem = clipboardItems[0];

  assert_true(clipboardItem instanceof ClipboardItem);

  assert_equals(clipboardItem.types.length, 2);

  const blobTextOutput = await clipboardItem.getType('text/plain');

  const blobImageOutput = await clipboardItem.getType('image/png');

  assert_equals(blobTextOutput.type, 'text/plain');

  assert_equals(blobImageOutput.type, 'image/png');

}, 'Verify write and read clipboard (multiple types) with promise to Blobs');

</script>