async-write-read.https.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /clipboard-apis/text-write-read/async-write-read.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>

  Async Clipboard write ([text/plain ClipboardItem]) ->

        read ([text/plain ClipboardItem]) 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 readWriteTest(textInput) {

  promise_test(async t => {

    await tryGrantReadPermission();

    await tryGrantWritePermission();

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

    const clipboardItemInput = new ClipboardItem({'text/plain': blobInput});

    await waitForUserActivation();

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

    await waitForUserActivation();

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

    assert_equals(clipboardItems.length, 1);

    const clipboardItemOutput = clipboardItems[0];

    assert_true(clipboardItemOutput instanceof ClipboardItem);

    assert_equals(clipboardItemOutput.types.length, 1);

    const blobOutput = await clipboardItemOutput.getType('text/plain');

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

    const textOutput = await (new Response(blobOutput)).text();

    assert_equals(textOutput, textInput);

  }, 'Verify write and read clipboard given text: ' + textInput);

readWriteTest('Clipboard write ([text/plain ClipboardItem]) -> read ([text/plain ClipboardItem]) test');

readWriteTest('non-Latin1 text encoding test データ');

</script>