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async-custom-formats-write-read.tentative.https.html
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<!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>