<!DOCTYPE html>
<title>getHTML behavior</title>
<meta name="timeout" content="long">
<link rel='author' href='mailto:masonf@chromium.org'>
<link rel='help' href='https://github.com/whatwg/html/issues/8867'>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src='../../html/resources/common.js'></script>

<body>

<script>
function testElementType(allowsShadowDom, elementType, runGetHTMLOnShadowRoot,
      lightDOMContent, declarativeShadowDom, mo