<!DOCTYPE html>
<html>
<head>
<script src="../../../resources/js-test-pre.js"></script>
<style>

p::x-shadow-child {
  color: red;
}

a::x-nested-shadow-child {
  color: blue;
}

p::x-shadow-child::x-nested-shadow-child {
  background-color: green;
}

</style>
</head>
<body>

<div id="console"></div>
<p id="host"></div>

<script>
function buildShadowWithOneChild(host, childTagName, childPseudoId)
{
    var shadow = host.webkitCreateShadowRoot();
    var shadowChild = document.createElement(childTagName);
    shadow.appendChild(shadowChild);
    internals.setShadowPseudoId(shadowChild, childPseudoId);
    return { host: host, shadow: shadow, shadowChild: shadowChild };
}

description("Nested pseudo id should be matchable");

if (!window.internals)
    fail("You need window.internals to run this test");
    
var host = document.getElementById("host");
var tuple = buildShadowWithOneChild(host, "a", "x-shadow-child");
shouldBe("window.getComputedStyle(tuple.shadowChild).color", "'rgb(255, 0, 0)'");
var shadowTuple = buildShadowWithOneChild(tuple.shadowChild, "b", "x-nested-shadow-child");
shouldBe("window.getComputedStyle(shadowTuple.shadowChild).color", "'rgb(0, 0, 255)'");
shouldBe("window.getComputedStyle(shadowTuple.shadowChild).backgroundColor", "'rgb(0, 128, 0)'");

var successfullyParsed = true;
</script>
<script src="../../../resources/js-test-post.js"></script>
</body>
</html>