async-custom-formats-write-read.tentative.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-custom-formats-write-read.tentative.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>Async Clipboard custom write -> Async Clipboard custom read test</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>

'use strict';

promise_test(async t => {

  await tryGrantReadPermission();

  await tryGrantWritePermission();

  const format1 = 'web application/x-custom-format-clipboard-test-format-1';

  const format2 = 'web application/x-custom-format-clipboard-test-format-2';

  const blobInput1 = new Blob(['input data 1'], {type: format1});

  const blobInput2 = new Blob(['input data 2'], {type: format2});

  const clipboardItemInput = new ClipboardItem(

      {[format1]: blobInput1, [format2]: blobInput2});

  await waitForUserActivation();

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

  // Items should be readable on a custom format clipboard after custom format

  // write.

  await waitForUserActivation();

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

  assert_equals(clipboardItems.length, 1);

  const clipboardItem = clipboardItems[0];

  assert_true(clipboardItem instanceof ClipboardItem);

  // This test can't verify clipboardItem.types, because its size and values

  // are both platform-dependent.

  const blobOutput1 = await clipboardItem.getType(format1);

  assert_equals(blobOutput1.type, format1);

  const data1 = await (new Response(blobOutput1)).text();

  assert_equals(data1, 'input data 1');

  const blobOutput2 = await clipboardItem.getType(format2);

  assert_equals(blobOutput2.type, format2);

  const data2 = await (new Response(blobOutput2)).text();

  assert_equals(data2, 'input data 2');

}, 'Verify write and read clipboard given 2 platform-neutral custom format inputs');

</script>