chromium/third_party/blink/web_tests/fast/forms/label/selection-disabled-label.html

<!DOCTYPE html>
<html>
<script src="../../../resources/js-test.js"></script>
<style>
span { 
    user-select: none;
    -webkit-user-select: none;
}
</style>
<div>
    Select, some text from this line!!!
</div>
<label class="label">
    <input type="checkbox"/>
    <span id='span'>Click Me</span>
</label>
<div id='console'></div>

<script>
description('Tests that the click event is passed when selection is disabaled' +
    ' on label');

var span = document.getElementById('span');
testWithDoubleClick(span);
shouldBeEqualToString('window.getSelection().toString()', '');

var div = document.querySelector('div');
testWithDoubleClick(div);
shouldBeEqualToString('window.getSelection().toString()', 'Select');

shouldBeFalse("document.querySelector('input').checked");

span.click();
shouldBeTrue("document.querySelector('input').checked");

span.click();
shouldBeFalse("document.querySelector('input').checked");

div.style.display = 'none';
span.style.display = 'none';

function testWithDoubleClick(element)
{
    eventSender.mouseMoveTo(element.offsetLeft, element.offsetTop);
    eventSender.mouseDown();
    eventSender.mouseUp();
    eventSender.mouseDown();
    eventSender.mouseUp();
}
</script>