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+<?xml version="1.0"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=419527
+-->
+<head>
+ <title>Test for Bug 419527</title>
+ <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<template id="template"><span>Foo</span></template>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=419527">Mozilla Bug 419527</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+<![CDATA[
+
+/** Test for Bug 419527 **/
+customElements.define("custom-element", class extends HTMLElement {
+ constructor() {
+ super();
+ const template = document.getElementById("template");
+ const shadowRoot = this.attachShadow({mode: "open"})
+ .appendChild(template.content.cloneNode(true));
+ }
+ connectedCallback() {
+ var win = window;
+ var span = this.shadowRoot.children[0];
+ win.ok(span.textContent == "Foo", "Right span.");
+ win.ok(span.localName == "span", "Wrong anon node!");
+ var range = document.createRange();
+ range.selectNode(span.firstChild);
+ win.ok(range.startContainer == span, "Wrong start container!");
+ win.ok(range.endContainer == span, "Wrong end container!");
+ var newSubTree = win.newSubTree;
+ newSubTree.appendChild(this);
+ range.setStart(newSubTree.firstChild, 0);
+ win.ok(range.startContainer == newSubTree.firstChild,
+ "Range should have been collapsed to newSubTree.firstChild!");
+ win.ok(range.endContainer == newSubTree.firstChild,
+ "Range should have been collapsed to newSubTree.firstChild!");
+ SimpleTest.finish();
+ }
+});
+
+var d;
+
+function runRangeTest() {
+ window.newSubTree = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
+ newSubTree.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "div"));
+
+ d = document.createElementNS("http://www.w3.org/1999/xhtml", "custom-element");
+ document.body.appendChild(d);
+}
+
+SimpleTest.waitForExplicitFinish();
+setTimeout(runRangeTest, 0);
+
+]]>
+</script>
+</pre>
+</body>
+</html>
+