chromium/third_party/blink/web_tests/external/wpt/selection/addRange.tentative.html

<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Selection: Add a range to the selection</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
window.onload = function() {
  test(function() {
    var selection = window.getSelection();
    var p = document.querySelector("p");

    var range = document.createRange();
    range.selectNode(p);
    selection.addRange(range);

    // In Safari the anchorNode is the Text node, elsewhere it's the Element.
    assert_equals(selection.anchorNode, document.body);
    assert_equals(selection.anchorOffset, 1);
    assert_equals(selection.focusNode, document.body);
    assert_equals(selection.focusOffset, 2);
    assert_equals(selection.isCollapsed, range.collapsed);
    assert_equals(selection.rangeCount, 1);
  });
};
</script>
<body>
  <p>Add a range to the selection</p>
</body>
</html>