chromium/third_party/blink/web_tests/editing/selection/modify_move/move-by-character-003.html

<!DOCTYPE html>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<body>
<div contenteditable id="root" class="editing">
<span id="sample"><i>F    and seven</i> years <b>  as </b>our fathers  f upon this
continent, a new nation, conceived &nbsp;&nbsp; in Liberty,                 and dedicated to the
proposition that all<br>
men are created equal.</span>
</div>
<div id="log"></div>
<script>
test(function () {
    var selection = window.getSelection();
    selection.collapse(sample, 0);
    for (i = 0; i < 158; ++i)
      selection.modify('move', 'forward', 'character');
    assert_true(selection.isCollapsed, 'isCollapsed');
    assert_equals(selection.anchorNode, sample.childNodes[5], 'anchorNode');
    assert_equals(selection.anchorOffset, 22, 'anchorOffset');
});
</script>

</body>