chromium/third_party/blink/web_tests/editing/execCommand/remove-formatting.html

<!doctype html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../assert_selection.js"></script>
<script>
test(() => assert_selection(
    '<div contenteditable><a href="http://foo">bar</a></div>',
    selection => {
        assert_false(selection.document.execCommand('removeFormat'),
                     'RemoveFormat enabled with no selection');
    },
    '<div contenteditable><a href="http://foo">bar</a></div>'),
    'RemoveFormat command with no selection');

test(() => assert_selection(
    '<div contenteditable><b>|abc</b></div>',
    selection => {
        assert_false(selection.document.execCommand('removeFormat'),
                     'RemoveFormat enabled with no selection');
    },
    '<div contenteditable><b>|abc</b></div>'),
    'RemoveFormat command with caret');

test(() => assert_selection(
    [
        '<div contenteditable>',
            '<b>^abc</b>',
            '<a href="#foo">def</a>',
            '<i>ghi</i><br>',
            '<table><tbody><tr><td>one</td><td>two</td></tr></tbody></table>',
            '<u>jkl</u>',
            'mno',
            '<span style="text-decoration:line-through">baz|</span><br>',
        '</div>',
    ].join(''),
    'removeFormat',
    [
        '<div contenteditable>',
            '^abc',
            '<a href="#foo">def</a>',
            'ghi<br>',
            '<table><tbody><tr><td>one</td><td>two</td></tr></tbody></table>',
            'jkl',
            'mno',
            'baz|<br>',
        '</div>',
    ].join('')),
    'RemoveFormat command with range selection');
</script>