async-html-script-removal.https.html

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This WPT test may be referenced by the following Test IDs:
- /clipboard-apis/async-html-script-removal.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8">

<title>

  Async Clipboard write ([text/html ClipboardItem]) -> readHtml (and remove scripts) 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>

'use strict';

// This function removes extra spaces between tags in html. For example, the

// following html: "<p> Hello </p>   <body> World </body>" would turn into this

//           html: "<p> Hello </p> <body> World </body>"

// We remove the extra spaces because in html they are considered equivalent,

// but when we are comparing for equality the spaces make a difference.

function reformatHtml(html) {

  const parser = new DOMParser();

  const htmlString =

    parser.parseFromString(html, 'text/html').documentElement.innerHTML;

  const reformattedString = htmlString.replace(/\>\s*\</g, '> <');

  return reformattedString;

// The string must be concatenated in this way because the html parser

// will recognize a script tag even in quotes as a real script tag. By

// splitting it up in this way we avoid that error.

const html_with_script =

  '<title>Title of the document</title> <script>const a = 5;</scr'

  + 'ipt> <p>Hello World</p>';

const html_script =

  '<script>const a = 5;</scr'

  + 'ipt>';

promise_test(async t => {

  await tryGrantReadPermission();

  await tryGrantWritePermission();

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

  const clipboardItem = new ClipboardItem({'text/html': blobInput});

  await waitForUserActivation();

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

  await waitForUserActivation();

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

  const html = clipboardItems[0];

  assert_equals(html.types.length, 1);

  assert_equals(html.types[0], 'text/html');

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

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

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

  const outputHtml = reformatHtml(blobText);

  const html_script_no_spaces = reformatHtml(html_script);

  assert_true(!outputHtml.includes(html_script_no_spaces));

}, 'Verify write and read clipboard with scripts removed given text/html. The string "' + html_script + '" has been removed.');

</script>