chromium/third_party/blink/web_tests/fast/css/hover-affects-ancestor.html

<!DOCTYPE html>
<html>
<head>
<title>hover ancestor test</title>
<style type="text/css" media="screen">
.foo {
    background: red;
    width: 300px;
    height: 300px;
    position: relative;
}

.foo:hover {
    background: green;
}
</style>
</head>
<body>
<p>This test ensures that ancestor element hover rules are not affected when we hover
its contained elements</p>
<div class="foo" id="target">
<select class="select" id="testselect" size="3">
<option  value="option1">option1</option>
<option  value="option1">option2</option>
<option selected="selected" value="option2">option3</option>
</select>
<br>
<input type="text" name="fname" id="testinput"/>
<br>
<textarea rows="2" cols="20" id="testtextarea">Textarea test.</textarea>
<br>
<a  id="testanchor" href="webkit.org">http://www.webkit.org</a>
<br>
<button type="button" id="testbutton">Button test</button> 
<br>
<form>
<input type="radio" id="testradio"/>Radio test
<br>
<input type="checkbox" id="testcheckbox"/>Checkbox test
<br>
</form> 
</div>
<script type="text/javascript">
if (window.testRunner) {
    testRunner.dumpAsText();
}

function getCenterFor(element)
{
    var rect = element.getBoundingClientRect();
    return { x : parseInt((rect.left + rect.right) / 2) , y : parseInt((rect.top + rect.bottom) / 2)};
}

function runTest(id) {
    var box, x, y;
    box = document.getElementById(id);
    center = getCenterFor(box);
    eventSender.mouseMoveTo(center.x, center.y);
    var target = document.getElementById("target");
    var style = window.getComputedStyle(target, null);
    var bgColor = style.getPropertyValue("background-color");
    logResult(id, bgColor);
}

function logResult(id, bgColor) {
    document.write(id + ': ');
    document.write(bgColor=="rgb(0, 128, 0)" ? "PASS" : "FAIL");
    document.write('<br>');
}

if (window.eventSender) {
    runTest("testselect");
    runTest("testinput");
    runTest("testtextarea");
    runTest("testanchor");
    runTest("testbutton");
    runTest("testradio");
    runTest("testcheckbox");
}
</script>
</body>
</html>