388 files changed, 39050 insertions, 0 deletions
diff --git a/parser/htmlparser/tests/crashtests/121591-1.html b/parser/htmlparser/tests/crashtests/121591-1.html
new file mode 100644
index 0000000000..b411a18518
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/121591-1.html
@@ -0,0 +1,22 @@
+<HTML>
+<body>
+<span>
+<head><link></head>
+   <table border=1>
+    <tr><td>
+     <table border=1 align="left">
+      <tr><td></td></tr>
+      <tr><td> 
+	  <form>
+	    <button></button>
+      </form>
+      </td></tr>
+     </table>
+    </td></tr>
+   </table>
+</span>
+</body>
+</html>
+
+
+
diff --git a/parser/htmlparser/tests/crashtests/1373045-1.html b/parser/htmlparser/tests/crashtests/1373045-1.html
new file mode 100644
index 0000000000..d0bea2fa44
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1373045-1.html
@@ -0,0 +1 @@
+<object data="data:image/svg+xml;charset=ISO-2022-KR,%30"></object>
diff --git a/parser/htmlparser/tests/crashtests/147179-1.html b/parser/htmlparser/tests/crashtests/147179-1.html
new file mode 100644
index 0000000000..2aaac19844
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/147179-1.html
@@ -0,0 +1,7 @@
+<html><head><title>Testcase for bug 141561</title></head>
+<body>
+
+<script>document.write("<form><input type='password'></form>");</script>
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/151956-1.html b/parser/htmlparser/tests/crashtests/151956-1.html
new file mode 100644
index 0000000000..0ae77f6a6c
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/151956-1.html
@@ -0,0 +1,18 @@
+<html>
+<body>
+<!-- script isn't actually required for the crash of bug 151956 -->
+<table border>
+  <tbody>
+    <form>
+      <script>
+        var foo = 42;
+      </script>
+    </form>
+    <tr>
+      <td> X </td>
+    </tr>
+  </tbody>
+</table>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/crashtests/152444-1.html b/parser/htmlparser/tests/crashtests/152444-1.html
new file mode 100644
index 0000000000..6576444544
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/152444-1.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+<title>Untitled</title>
+</head>
+<body>
+<table>
+<tbody>
+<form>
+<tr><td colspan=2></td></tr>
+<tr><td></td><td></td></tr>
+</form>
+</tbody>
+</table>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/1534346-1.html b/parser/htmlparser/tests/crashtests/1534346-1.html
new file mode 100644
index 0000000000..34ab7930db
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1534346-1.html
@@ -0,0 +1 @@
+<svg><script></svg>
diff --git a/parser/htmlparser/tests/crashtests/1547895-1.html b/parser/htmlparser/tests/crashtests/1547895-1.html
new file mode 100644
index 0000000000..72d19c6caa
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1547895-1.html
@@ -0,0 +1,10 @@
+<script>
+var func0 = async function(a) {
+    a.currentTarget.close()
+}
+document.addEventListener('DOMContentLoaded', () => {
+  document.write()
+  document.addEventListener('readystatechange', func0, true)
+  setTimeout(window.close, 0)
+})
+</script>
diff --git a/parser/htmlparser/tests/crashtests/1604307-1.html b/parser/htmlparser/tests/crashtests/1604307-1.html
new file mode 100644
index 0000000000..28a2e7caf0
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1604307-1.html
@@ -0,0 +1,10 @@
+<script>
+function go() {
+  b.crossOrigin = ""
+  document.execCommand("insertHTML", false, c.innerHTML)
+}
+</script>
+<image id="b" src="data:;base64,R0lGODlhIAAgAPIBAGbMzP///wAAADOZZpn/zAAAAAAAAAAAACH5BAAAAAAALAAAAAAgACAAAA" onload="go()"></image>
+<data id="c">
+<s contenteditable="true"
+<!-- A -->
diff --git a/parser/htmlparser/tests/crashtests/1606499-1.html b/parser/htmlparser/tests/crashtests/1606499-1.html
new file mode 100644
index 0000000000..5771d73d8d
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1606499-1.html
@@ -0,0 +1,15 @@
+<html class="reftest-wait">
+<script>
+let alreadyRun = sessionStorage.getItem("ran1606499");
+if (alreadyRun) {
+  document.documentElement.removeAttribute("class");
+} else {
+  sessionStorage.setItem("ran1606499", "ran1606499");
+  document.addEventListener('DOMContentLoaded', () => {
+    setTimeout(() => { document.close() }, 146)
+    setTimeout(() => { location.reload() }, 145)
+    self.stop()
+    document.write('<body></body>')
+  })
+}
+</script>
diff --git a/parser/htmlparser/tests/crashtests/1747514.html b/parser/htmlparser/tests/crashtests/1747514.html
new file mode 100644
index 0000000000..9411f22a52
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1747514.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+  <body>
+  <script>
+    // Generate an SVG data URI whose URI string will consume 20 MB in expat
+    // (which uses two-byte chars).
+    let img = document.createElement('img');
+    let rect = "<rect />";
+    let src = "data:image/svg+xml;utf8,<svg>" + rect.repeat(20 * 1000 * 1000 / rect.length / 2) + "</svg>";
+    img.src = src;
+    document.body.appendChild(img);
+  </script>
+
diff --git a/parser/htmlparser/tests/crashtests/1810896-1.html b/parser/htmlparser/tests/crashtests/1810896-1.html
new file mode 100644
index 0000000000..2c16456302
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1810896-1.html
@@ -0,0 +1,1081 @@
+<!DOCTYPE html>
+<head>
+<title>$B$"(B</title>
+</head>
+<body>
+
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+
+
+    あ
+</body>
+
diff --git a/parser/htmlparser/tests/crashtests/185073-1.html b/parser/htmlparser/tests/crashtests/185073-1.html
new file mode 100644
index 0000000000..39504ede22
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/185073-1.html
@@ -0,0 +1,15 @@
+<html>
+   <head>
+      <title>bug 185073</title>
+   </head>
+   <body>
+      <font>
+         <div id="updateText">
+            <script language=javascript type=text/javascript>
+               document.write('</div>');
+               document.getElementById("updateText").innerHTML = "foo";
+            </script>
+         </div>
+      </font>
+   </body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/1854907-1.html b/parser/htmlparser/tests/crashtests/1854907-1.html
new file mode 100644
index 0000000000..f26f06e75f
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/1854907-1.html
@@ -0,0 +1,225 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script async src="data:text/javascript,document.write(1);"></script>
+<script></script>
+a
+a
+a
+a
+a
+a
+a
+a
+a
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diff --git a/parser/htmlparser/tests/crashtests/188474-1.html b/parser/htmlparser/tests/crashtests/188474-1.html
new file mode 100644
index 0000000000..2e8b03d197
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/188474-1.html
@@ -0,0 +1,13 @@
+<HTML><HEAD>
+<SCRIPT language="javascript" type="text/javascript">
+
+var header ="<body><div id=\"foo\"></div><div id=\"foo2\"><!-- comment -->";
+
+var footer = "</div><!-- comment -->";
+
+</SCRIPT>
+<SCRIPT language="javascript" type="text/javascript">document.write(header);</SCRIPT>
+</HEAD>
+<BODY>
+<SCRIPT language="javascript" type="text/javascript">document.write(footer);</SCRIPT>
+</BODY></HTML>
diff --git a/parser/htmlparser/tests/crashtests/194329-1.html b/parser/htmlparser/tests/crashtests/194329-1.html
new file mode 100644
index 0000000000..c7ab69007e
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/194329-1.html
@@ -0,0 +1,15 @@
+<html>
+   <head>
+      <title>bug 188474</title>
+   </head>
+   <body>
+      <head>
+      <div>
+         <script>
+            document.write("<\/div>");
+         </script>
+         <noscript>
+            </div>
+         </noscript><!-- End PayPal Logo -->
+   </body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/197052-1.html b/parser/htmlparser/tests/crashtests/197052-1.html
new file mode 100644
index 0000000000..d0b30c761b
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/197052-1.html
@@ -0,0 +1 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+        "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
+<html>
+<head>
+	<title>testcase - crasher</title>
+</head>
+<body>
+<div id="uniqid">
+<script language="JavaScript" type="text/JavaScript">
+document.write("&gt;"+document.getElementById('uniqid').innerHTML+"&lt;");
+</script>
+</div>
+</body>
+</html>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/220542-1.html b/parser/htmlparser/tests/crashtests/220542-1.html
new file mode 100644
index 0000000000..f664734664
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/220542-1.html
@@ -0,0 +1,2 @@
+<script>document.write('<link href="l:\\" rel=stylesheet>')</script>
+
diff --git a/parser/htmlparser/tests/crashtests/253979-1.html b/parser/htmlparser/tests/crashtests/253979-1.html
new file mode 100644
index 0000000000..5e47ee84c9
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/253979-1.html
@@ -0,0 +1,4 @@
+<html><head></head><body>
+<a><a><p><font><p><font><b><a></font></a>
+</body></html>
+
diff --git a/parser/htmlparser/tests/crashtests/269095-1.html b/parser/htmlparser/tests/crashtests/269095-1.html
new file mode 100644
index 0000000000..83cc52828e
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/269095-1.html
@@ -0,0 +1 @@
+<TABLE >
+<FRAMESET>
+<PARAM>
+<FORM>
+<MAP>
+<FORM>
+<TABLE>
+<RTABLE>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/286733-1.html b/parser/htmlparser/tests/crashtests/286733-1.html
new file mode 100644
index 0000000000..04be4f11d3
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/286733-1.html
@@ -0,0 +1,4 @@
+<TABLE>
+<FRAMESET><FRAME></FRAMESET>
+<TR><TD><TABLE>
+          <TR><BR><TD><MAP><TABLE><BR></MAP>
diff --git a/parser/htmlparser/tests/crashtests/286733-2.html b/parser/htmlparser/tests/crashtests/286733-2.html
new file mode 100644
index 0000000000..5fcf7a7ff9
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/286733-2.html
@@ -0,0 +1,4 @@
+<TABLE>
+<FRAMESET><FRAME></FRAMESET>
+<TR><TD><TABLE>
+          <TR><BR><TD><MAP><TABLE><TR><BR></MAP>
diff --git a/parser/htmlparser/tests/crashtests/299036-1.html b/parser/htmlparser/tests/crashtests/299036-1.html
new file mode 100644
index 0000000000..e21ce2b9b7
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/299036-1.html
@@ -0,0 +1,2 @@
+<table><textarea></textarea></table>
+
diff --git a/parser/htmlparser/tests/crashtests/30885-1.html b/parser/htmlparser/tests/crashtests/30885-1.html
new file mode 100644
index 0000000000..2dc0fe035d
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/30885-1.html
@@ -0,0 +1,17 @@
+<HTML>
+ <BODY>
+
+  <TABLE BORDER="1">
+   <TR>
+    <TD>
+     <A HREF="foo.htm">
+      <FONT></A>
+     <A HREF="bar.htm">
+      <FONT>
+       MacDesktops</A>
+      </FONT>
+    </TD>
+   </TR>
+</TABLE>
+</BODY>
+</HTML>
diff --git a/parser/htmlparser/tests/crashtests/30956-1.html b/parser/htmlparser/tests/crashtests/30956-1.html
new file mode 100644
index 0000000000..508149a97d
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/30956-1.html
@@ -0,0 +1,10 @@
+<HTML>
+
+<body>
+<table>
+  <td>
+      <li><font size="-1">
+      <li><a href="foo.html"></font></a>
+</table>
+</body>
+</html>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/31392-1.html b/parser/htmlparser/tests/crashtests/31392-1.html
new file mode 100644
index 0000000000..0a4a138b34
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/31392-1.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+<title>Crash Test page</title>
+</head>
+<body>
+
+<table>
+<tr>
+<td>
+<LINK REL="stylesheet" HREF="garbagestyle.css" TYPE="text/css">
+</td>
+</tr>
+</table>
+</body>
+</html>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/31694-1.html b/parser/htmlparser/tests/crashtests/31694-1.html
new file mode 100644
index 0000000000..8be2d47f02
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/31694-1.html
@@ -0,0 +1,8 @@
+<HTML><HEAD>
+<script src="foo.js"></script>
+<csactions>
+<csaction name="bar" class="foobar" type="ONEVENT">
+</csactions>
+</HEAD>
+<BODY>
+<DD></DD></BODY></HTML>
diff --git a/parser/htmlparser/tests/crashtests/31940-1.html b/parser/htmlparser/tests/crashtests/31940-1.html
new file mode 100644
index 0000000000..ec2f370e83
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/31940-1.html
@@ -0,0 +1,15 @@
+<HEAD>
+   <LINK rel="stylesheet">
+   <rdf:RDF>
+   <rdf:Description/>
+   </rdf:RDF>
+</HEAD>
+
+<BODY>
+
+<rdf:RDF>
+<rdfs:Class/>
+</rdf:RDF>
+
+</BODY>
+</HTML>
diff --git a/parser/htmlparser/tests/crashtests/32613-1.html b/parser/htmlparser/tests/crashtests/32613-1.html
new file mode 100644
index 0000000000..f50c342e9f
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/32613-1.html
@@ -0,0 +1,18 @@
+<P><font color="003366" FACE="Serif">
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+<P><FONT size="2"></P>
+</FONT><BR>
diff --git a/parser/htmlparser/tests/crashtests/328751-1.html b/parser/htmlparser/tests/crashtests/328751-1.html
new file mode 100644
index 0000000000..37b46af345
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/328751-1.html
@@ -0,0 +1,9 @@
+<HEAD >
+<OBJECT >
+<APPLET CODE=" >
+<BODY TEXT=https://n%ItGEv5%&N8%6USN5i9"  
+<TABLE >
+<ISINDEX >
+<TITLE >
+<TBODY >
+</HEAD >
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/34168-1.html b/parser/htmlparser/tests/crashtests/34168-1.html
new file mode 100644
index 0000000000..a191a03681
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/34168-1.html
@@ -0,0 +1 @@
+<!ENTITY editAwayMessageSpecial3.label " %d = Current date">
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/34168-1.xml b/parser/htmlparser/tests/crashtests/34168-1.xml
new file mode 100644
index 0000000000..71a058c316
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/34168-1.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<!DOCTYPE foo [
+<!ENTITY  editAwayMessageSpecial3.label " %%d = Current date">
+<!ELEMENT foo EMPTY>
+]>
+<foo/>
diff --git a/parser/htmlparser/tests/crashtests/408939-1.html b/parser/htmlparser/tests/crashtests/408939-1.html
new file mode 100644
index 0000000000..844c70e72e
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/408939-1.html
@@ -0,0 +1,139 @@
+<!DOCTYPE html>
+<html>
+<head>
+</head>
+<body>
+
+<div>
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+</div>
+
+<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/41427-1.html b/parser/htmlparser/tests/crashtests/41427-1.html
new file mode 100644
index 0000000000..5612153da5
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/41427-1.html
@@ -0,0 +1 @@
+<A HREF=""><font><B>t</A><head><script>
diff --git a/parser/htmlparser/tests/crashtests/423373-1.html b/parser/htmlparser/tests/crashtests/423373-1.html
new file mode 100644
index 0000000000..4876095480
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/423373-1.html
@@ -0,0 +1 @@
+<body><asdf><legend>
diff --git a/parser/htmlparser/tests/crashtests/44178-1.html b/parser/htmlparser/tests/crashtests/44178-1.html
new file mode 100644
index 0000000000..0ecb40ef77
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/44178-1.html
@@ -0,0 +1,8 @@
+<html>
+<body>
+<div>
+<server>
+</server>
+</div>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/445171-1-inner.svg b/parser/htmlparser/tests/crashtests/445171-1-inner.svg
new file mode 100644
index 0000000000..24ed6f8a70
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/445171-1-inner.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" onload="location = 'file_445171-1.html'">
+
+<rect x="5" y="5" width="50" height="50" />
+
+</svg>
diff --git a/parser/htmlparser/tests/crashtests/445171-1.html b/parser/htmlparser/tests/crashtests/445171-1.html
new file mode 100644
index 0000000000..0abaacdfba
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/445171-1.html
@@ -0,0 +1,9 @@
+<html class="reftest-wait">
+<head>
+<script>
+function done() { document.documentElement.removeAttribute("class"); }
+</script>
+<body>
+<iframe src="445171-1-inner.svg"></iframe>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/46495-1.html b/parser/htmlparser/tests/crashtests/46495-1.html
new file mode 100644
index 0000000000..a0947ff2ca
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/46495-1.html
@@ -0,0 +1,5 @@
+<html>
+    <body>
+        <p ">
+    </body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/468538-1.xhtml b/parser/htmlparser/tests/crashtests/468538-1.xhtml
new file mode 100644
index 0000000000..576b333c19
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/468538-1.xhtml
@@ -0,0 +1,15 @@
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+<head>
+<script type="text/javascript">
+
+function boom()
+{
+  var v = document.getElementById("v");
+  document.body.removeChild(document.body.firstChild);
+  v.innerHTML = "f";
+}
+
+</script>
+</head>
+<body onload="boom();"><xul:box><div id="v"/></xul:box></body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/50134-1.html b/parser/htmlparser/tests/crashtests/50134-1.html
new file mode 100644
index 0000000000..efe680a1f4
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/50134-1.html
@@ -0,0 +1,8 @@
+<html>
+    <head>
+        <title>Mozilla Bug 50134</title>
+    </head>    
+    <body>
+        <!--->
+    </body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/502103.html b/parser/htmlparser/tests/crashtests/502103.html
new file mode 100644
index 0000000000..171a2890e5
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/502103.html
@@ -0,0 +1 @@
+<isindex action="">
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/502869-iframe.html b/parser/htmlparser/tests/crashtests/502869-iframe.html
new file mode 100644
index 0000000000..ff76e020bf
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/502869-iframe.html
@@ -0,0 +1,9 @@
+<html><head><title>[HTML5] Crash [@ nsHtml5TreeBuilder::appendToCurrentNodeAndPushElementMayFoster] with document.write and removing stuff</title></head><body><a>
+<script>
+var x=document.getElementsByTagName("*"); 
+x[1].remove();
+x[2].remove();
+</script>
+<div>
+<script>document.write('<'+'script>document.removeChild(document.documentElement);<'+'/script>');</script>
+</a></body></html>
diff --git a/parser/htmlparser/tests/crashtests/502869.html b/parser/htmlparser/tests/crashtests/502869.html
new file mode 100644
index 0000000000..5da23b5076
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/502869.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html class="reftest-wait"><head>
+    <meta charset="utf-8">
+    <title>Testcase for bug 502869</title>
+<script>
+function done()
+{
+  document.documentElement.removeAttribute("class");
+}
+</script>
+</head>
+<body onload="setTimeout(done,1000)">
+
+<iframe src="502869-iframe.html"></iframe>
+
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/50994-1.html b/parser/htmlparser/tests/crashtests/50994-1.html
new file mode 100644
index 0000000000..11bd9aaf07
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/50994-1.html
@@ -0,0 +1,12 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<HTML>
+	<HEAD>
+		<TITLE>Mozilla Bug 50994</TITLE>
+	</HEAD>
+	<BODY>
+        <P>
+		<FORM action="">
+            <P>
+		</FORM>			
+	</BODY>
+</HTML>
diff --git a/parser/htmlparser/tests/crashtests/515278-1.html b/parser/htmlparser/tests/crashtests/515278-1.html
new file mode 100644
index 0000000000..33e01f2224
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/515278-1.html
@@ -0,0 +1,3 @@
+
+<fooz>
+
diff --git a/parser/htmlparser/tests/crashtests/515533-1-inner.html b/parser/htmlparser/tests/crashtests/515533-1-inner.html
new file mode 100644
index 0000000000..6bd0684e21
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/515533-1-inner.html
@@ -0,0 +1,12 @@
+<html>
+<head>
+</head>
+<body>
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<script language="javascript">
+window.location.replace("data:text/plain,");
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/515533-1.html b/parser/htmlparser/tests/crashtests/515533-1.html
new file mode 100644
index 0000000000..b0d5b570b8
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/515533-1.html
@@ -0,0 +1 @@
+<iframe src="515533-1-inner.html"></iframe>
diff --git a/parser/htmlparser/tests/crashtests/515816-1.html b/parser/htmlparser/tests/crashtests/515816-1.html
new file mode 100644
index 0000000000..c518d2a3cf
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/515816-1.html
@@ -0,0 +1,11 @@
+<html>
+<body>
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<!-- xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -->
+<form>
+<input>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
diff --git a/parser/htmlparser/tests/crashtests/522326-1.html b/parser/htmlparser/tests/crashtests/522326-1.html
new file mode 100644
index 0000000000..d06ab6cf7d
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/522326-1.html
@@ -0,0 +1 @@
+<html><head><META http-equiv="Content-Type" content="text/html; charset=utf-16"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"></head><body>abcd</body></html>
diff --git a/parser/htmlparser/tests/crashtests/525229-1.html b/parser/htmlparser/tests/crashtests/525229-1.html
new file mode 100644
index 0000000000..8bffa7d601
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/525229-1.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>Test for bug 525229</title>
+<body>
+<script>
+document.write("<script src='data:text/javascript,'><\/script><div>");
+</script>
+text
diff --git a/parser/htmlparser/tests/crashtests/536097-1.html b/parser/htmlparser/tests/crashtests/536097-1.html
new file mode 100644
index 0000000000..76befb3cc8
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/536097-1.html
@@ -0,0 +1 @@
+<script>document.write("<iframe></iframe\n");</script><img>
diff --git a/parser/htmlparser/tests/crashtests/555462-iframe.html b/parser/htmlparser/tests/crashtests/555462-iframe.html
new file mode 100644
index 0000000000..3ddd6282db
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/555462-iframe.html
@@ -0,0 +1,3 @@
+<!--mmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmm mmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmm mmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmm -->
+<textarea><mmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm
+</textarea>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/555462.html b/parser/htmlparser/tests/crashtests/555462.html
new file mode 100644
index 0000000000..f8d4afad71
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/555462.html
@@ -0,0 +1,21 @@
+<!DOCTYPE HTML>
+<html class="reftest-wait"><head>
+    <meta charset="utf-8">
+    <title>Testcase for bug 555462</title>
+<script>
+function f1() {
+  window.frames[0].frameElement.removeAttribute("onload");
+  window.frames[0].location.reload();
+  setTimeout(f2,200); 
+}
+function f2() { window.frames[0].location.reload(); setTimeout(done,400); }
+function done() { document.documentElement.removeAttribute("class"); }
+</script>
+</head>
+<body>
+
+<iframe src="555462-iframe.html" onload="setTimeout(f1,100)"></iframe>
+
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/563514-1.html b/parser/htmlparser/tests/crashtests/563514-1.html
new file mode 100644
index 0000000000..b96ce14661
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/563514-1.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<script>
+function boom()
+{
+  document.createElement("span").innerHTML = "<body a='b'>";
+}
+</script>
+</head>
+<body onload="boom();"></body>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/574884-1.html b/parser/htmlparser/tests/crashtests/574884-1.html
new file mode 100644
index 0000000000..19de3c74a4
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/574884-1.html
@@ -0,0 +1 @@
+<svg></html>
diff --git a/parser/htmlparser/tests/crashtests/574884-2.html b/parser/htmlparser/tests/crashtests/574884-2.html
new file mode 100644
index 0000000000..09bec52e6d
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/574884-2.html
@@ -0,0 +1 @@
+<math></html>
diff --git a/parser/htmlparser/tests/crashtests/58455-1.html b/parser/htmlparser/tests/crashtests/58455-1.html
new file mode 100644
index 0000000000..7c235f9806
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/58455-1.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+	<title>Computer Market Online</title>
+	<BASE HREF="http://www.computermarket.com.au/">
+</head>
+
+<body bgcolor="#ffffff">
+
+<table>
+<tr><td><a href='prodDetail.asp?id=6007&catid=241'>This shows</a></td></tr>
+<tr><td><a href='prodDetail.asp?id=6007&catid=241'">This does not show</a></td></tr>
+</table>
+		
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/591330-1.html b/parser/htmlparser/tests/crashtests/591330-1.html
new file mode 100644
index 0000000000..31719fac6a
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/591330-1.html
@@ -0,0 +1,284 @@
+<script>
+var sleep = 500; // 0.5 seconds
+var start = Number(new Date());
+while(Number(new Date()) - start < sleep) {
+}
+document.write("<div>"); // make speculation fail
+</script>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
+<span>
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+<span>
+<span>
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+<span>
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+<span>
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+
diff --git a/parser/htmlparser/tests/crashtests/60110-1.html b/parser/htmlparser/tests/crashtests/60110-1.html
new file mode 100644
index 0000000000..34f8c406b8
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/60110-1.html
@@ -0,0 +1,22 @@
+<HTML><HEAD>
+<TITLE>Edit parameters</TITLE>
+
+
+</HEAD>
+<BODY   BGCOLOR="#FFFFFF" TEXT="#000000"
+LINK="#0000EE" VLINK="#551A8B" ALINK="#FF0000" >
+
+<p>
+Any item you check Reset on will get reset to its default value.
+<form method=post action=doeditparams.cgi><table>
+
+<tr><td valign=top><input type=checkbox name=reset-newchangedmail>Reset</td><td>
+<textarea wrap=hard name=newchangedmail rows=10 cols=80>From: bugzilla-daemon&#010;To: %to%&#013;&#010;Cc: %cc%&#013;&#010;Subject: [Bug %bugid%] %neworchanged% - %summary%&#013;&#010;&#013;&#010;%urlbase%show_bug.cgi?id=%bugid%&#013;&#010;&#013;&#010;%diffs%</textarea>
+</td></tr>
+<tr><td valign=top><input type=checkbox name=reset-whinemail>Reset</td><td>
+<textarea wrap=hard name=whinemail rows=10 cols=80>From: bugzilla-daemon&#010;To: %email%&#013;&#010;Subject: Your Bugzilla buglist needs attention.&#013;&#010;&#013;&#010;[This e-mail has been automatically generated.]&#013;&#010;&#013;&#010;You have one or more bugs assigned to you in the Bugzilla &#013;&#010;bugsystem (%urlbase%) that require&#013;&#010;attention.&#013;&#010;&#013;&#010;All of these bugs are in the NEW state, and have not been touched&#013;&#010;in %whinedays% days or more.  You need to take a look at them, and &#013;&#010;decide on an initial action.&#013;&#010;&#013;&#010;&#013;&#010;&#013;&#010;</textarea>
+</td></tr>
+<tr><td></td><td>2.11</td></tr></table>
+<input type=reset value="Reset form"><br>
+<input type=submit value="Submit changes">
+</form>
+\ No newline at end of file
diff --git a/parser/htmlparser/tests/crashtests/616027-1.html b/parser/htmlparser/tests/crashtests/616027-1.html
new file mode 100644
index 0000000000..d4707c9359
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/616027-1.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<body>
+<script>
+
+
+for (var fuzzRepeat = 0; fuzzRepeat < 500; ++fuzzRepeat) {
+  document.write("<span>");
+}
+document.write("<isindex>");
+
+
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/650501-1.xhtml b/parser/htmlparser/tests/crashtests/650501-1.xhtml
new file mode 100644
index 0000000000..c701a0c76c
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/650501-1.xhtml
@@ -0,0 +1,22 @@
+
+<html xmlns="http://www.w3.org/1999/xhtml"> 
+<head> 
+<script> 
+<![CDATA[
+ 
+function boom()
+{
+  var a = document.createElement("div");
+  a.innerHTML = "<script>1;<\/script>";
+ 
+  var b = document.createElement("div")
+  try { b.innerHTML = "<"; } catch (invalidXML) { }
+ 
+  document.documentElement.appendChild(a);
+}
+ 
+]]>
+</script> 
+</head> 
+<body onload="boom();"></body> 
+</html>
diff --git a/parser/htmlparser/tests/crashtests/662185-1.html b/parser/htmlparser/tests/crashtests/662185-1.html
new file mode 100644
index 0000000000..41d67e5355
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/662185-1.html
@@ -0,0 +1 @@
+<meta charset=t>
diff --git a/parser/htmlparser/tests/crashtests/696651-1.html b/parser/htmlparser/tests/crashtests/696651-1.html
new file mode 100644
index 0000000000..8c5ee9ed3a
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/696651-1.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<script>
+function runTest() {
+  var iframe = document.getElementsByTagName("iframe")[0];
+  var doc = iframe.contentDocument;
+  doc.write("\u003cscript>document.close();\u003c/script>foo");
+}
+</script>
+<body onload="runTest();">
+<iframe></iframe>
+
diff --git a/parser/htmlparser/tests/crashtests/699347-1.xml b/parser/htmlparser/tests/crashtests/699347-1.xml
new file mode 100644
index 0000000000..c6dd4bfa1b
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/699347-1.xml
@@ -0,0 +1 @@
+<?xml version="1.0"?><root/>
diff --git a/parser/htmlparser/tests/crashtests/721313-1.html b/parser/htmlparser/tests/crashtests/721313-1.html
new file mode 100644
index 0000000000..06497cd65b
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/721313-1.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<script>(new DOMParser()).parseFromString("", "text/html");</script>
diff --git a/parser/htmlparser/tests/crashtests/73331-1.html b/parser/htmlparser/tests/crashtests/73331-1.html
new file mode 100644
index 0000000000..6761a6686a
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/73331-1.html
@@ -0,0 +1,27 @@
+<html>
+<head>
+<script>
+function crashme() {
+  var obj = document.getElementById('popupid');
+  obj.style.visibility='hidden';
+}
+</script>
+</head>
+<body onload="crashme();">
+<a href="http://www.mozilla.org/">http://www.mozilla.org/</a>
+
+<div id="popupid">
+<font>
+<script>
+  document.write('<form>');
+  document.write('<span>');
+  document.write('<input>');
+  document.write('</span>');
+  document.write('<br>');
+  document.write('</form>');
+</script>
+</font>
+</div>
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/crashtests/742414-1.html b/parser/htmlparser/tests/crashtests/742414-1.html
new file mode 100644
index 0000000000..e35b125603
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/742414-1.html
@@ -0,0 +1,4 @@
+<script></script
+><script></script
+><script></script
+>
diff --git a/parser/htmlparser/tests/crashtests/762726-1.html b/parser/htmlparser/tests/crashtests/762726-1.html
new file mode 100644
index 0000000000..4692b73e1e
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/762726-1.html
@@ -0,0 +1 @@
+<meta charset>
diff --git a/parser/htmlparser/tests/crashtests/92647-1.html b/parser/htmlparser/tests/crashtests/92647-1.html
new file mode 100644
index 0000000000..16be8d98e1
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/92647-1.html
@@ -0,0 +1,33 @@
+<HTML>
+<BODY>
+ <form> 
+<TABLE border="1">
+ <TR>
+  <TD>
+   <TABLE border="2">
+    <TR>
+     <TD WIDTH="30%">
+       Member Number:
+     </TD>
+	 <TD WIDTH="70%">
+      <INPUT NAME="EchoUser" TYPE="TEXT">
+	 </TD>
+    </TR>
+    <TR>
+     <TD>
+      PIN:
+     </TD>
+     <TD>
+      <INPUT TYPE="password">
+	 </TD>
+     <TD>
+     </TD>
+    </TR>
+   </TABLE>
+  </TD>
+ </TR>
+</TABLE>
+</Form>
+</BODY>
+</HTML>
+
diff --git a/parser/htmlparser/tests/crashtests/92788-1.html b/parser/htmlparser/tests/crashtests/92788-1.html
new file mode 100644
index 0000000000..955301e3f2
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/92788-1.html
@@ -0,0 +1,20 @@
+<HTML><HEAD><TITLE>Bug #92788</TITLE></HEAD>
+<BODY>
+<TABLE>
+  <TR>
+    <TD>
+      <CENTER>
+              <TR>
+                <TD>
+                <IFRAME 
+                  marginWidth=0 marginHeight=0 src="foo" frameBorder=0 width=125 scrolling=no 
+                  height=125><SCRIPT LANGUAGE="JavaScript">document.write('<SCR'+'IPT LANGUAGE="JavaScript" SRC="http://ads1.ad-flow.com/?DC=tweak3d+-+rst&JS=Y&TARGET=_blank"></SCR'+'IPT>');</SCRIPT><NOSCRIPT><A HREF="http://ads1.ad-flow.com/?SHT=tweak3d+-+rst" TARGET="_blank"><IMG SRC="http://ads1.ad-flow.com/?SIT=tweak3d+-+rst" HEIGHT="125" WIDTH="125"></A></NOSCRIPT></IFRAME>--&gt; 
+                  <FORM name=EmailSub onsubmit="if ( (document.EmailSub.email.length == 0) ||  (document.EmailSub.email.value.indexOf('@') == -1) || (document.EmailSub.email.value.indexOf('.') == -1) ) {('Invalid Email address');return false;} window.open('http://www.pluginnewsletter.com/nl-popsub.cfm?wsnum=369&amp;' + 'Email=' + document.EmailSub.email.value,'WinOpen','toolbar=no,scrollbars=yes,resizable=yes,width=666,height=666'); return false;">
+                  <SCRIPT language=JavaScript src="foo.js"></SCRIPT>
+                  <NOSCRIPT><A target=_blank href="http://ads1.ad-flow.com/?SHT=tweak3d-lst" WIDTH="468" HEIGHT="60"><IMG src="Tweak3D_net - Your Freakin' Tweakin' Source!_fichiers/ads1.ad-flow.gif"></A> 
+                  </NOSCRIPT></CENTER>
+
+              <TR bgColor=#ffffff>
+                <CENTER><IFRAME marginWidth=0 marginHeight=0 src="foo" frameBorder=0 width=468 scrolling=no height=60><SCRIPT LANGUAGE="JavaScript">document.write('<SCR'+'IPT LANGUAGE="JavaScript" SRC="http://ads1.ad-flow.com/?DC=tweak3d-top&JS=Y&TARGET=_blank"></SCR'+'IPT>');</SCRIPT><NOSCRIPT><A HREF="http://ads1.ad-flow.com/?SHT=tweak3d-top" TARGET="_blank"><IMG SRC="http://ads1.ad-flow.com/?SIT=tweak3d-top&SC=Y" HEIGHT="60" WIDTH="468"></A></NOSCRIPT></IFRAME>
+</CENTER></TR>
+</BODY></HTML>
diff --git a/parser/htmlparser/tests/crashtests/981279-1.html b/parser/htmlparser/tests/crashtests/981279-1.html
new file mode 100644
index 0000000000..5f14c8af37
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/981279-1.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+</head>
+<body>
+<div></div>
+<script>
+var div = document.getElementsByTagName("div")[0];
+div.innerHTML = "<div À Á Â Ã Ä Å ";
+div.innerHTML = "<div a>";
+</script>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/crashtests/982285-1.html b/parser/htmlparser/tests/crashtests/982285-1.html
new file mode 100644
index 0000000000..d3e124d957
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/982285-1.html
@@ -0,0 +1,19 @@
+<q>
+<u>
+<pre>
+<pre>
+<center>
+<em>
+<center>
+<center>
+</rp>
+<address>
+<address>
+<address>
+</rt>
+<q>
+<q>
+<rt>
+</u>
+<pre>
+</em>
diff --git a/parser/htmlparser/tests/crashtests/crashtests.list b/parser/htmlparser/tests/crashtests/crashtests.list
new file mode 100644
index 0000000000..1c786b7acc
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/crashtests.list
@@ -0,0 +1,68 @@
+load 30885-1.html
+load 30956-1.html
+load 31392-1.html
+load 31694-1.html
+load 31940-1.html
+load 32613-1.html
+load 34168-1.html
+load 34168-1.xml
+load 41427-1.html
+load 44178-1.html
+load 46495-1.html
+load 50134-1.html
+load 50994-1.html
+load 58455-1.html
+load 60110-1.html
+load 73331-1.html
+load 92647-1.html
+load 92788-1.html
+load 121591-1.html
+load 147179-1.html
+load 151956-1.html
+load 152444-1.html
+load 185073-1.html
+load 188474-1.html
+load 194329-1.html
+load 197052-1.html
+load 220542-1.html
+load 253979-1.html
+load 269095-1.html
+load 286733-1.html
+load 286733-2.html
+load 299036-1.html
+skip-if(cocoaWidget&&browserIsRemote) load 328751-1.html # Bug 849747
+load 408939-1.html
+load 423373-1.html
+load 445171-1.html
+load 468538-1.xhtml
+load 502103.html
+load 502869.html
+load 515278-1.html
+load 515533-1.html
+load 515816-1.html
+load 522326-1.html
+load 525229-1.html
+load 536097-1.html
+load 555462.html
+load 563514-1.html
+load 574884-1.html
+load 574884-2.html
+load 591330-1.html
+load 616027-1.html
+load 650501-1.xhtml
+load 662185-1.html
+load 696651-1.html
+load view-source:699347-1.xml
+load 721313-1.html
+load view-source:742414-1.html
+load 762726-1.html
+load 981279-1.html
+load 982285-1.html
+load 1373045-1.html
+load 1534346-1.html
+load 1604307-1.html
+load 1606499-1.html
+load 1547895-1.html
+skip-if(Android) skip-if(isDebugBuild) load 1747514.html # Bug 1780219
+HTTP load 1810896-1.html
+load 1854907-1.html
diff --git a/parser/htmlparser/tests/crashtests/file_445171-1.html b/parser/htmlparser/tests/crashtests/file_445171-1.html
new file mode 100644
index 0000000000..de8a5eb065
--- /dev/null
+++ b/parser/htmlparser/tests/crashtests/file_445171-1.html
@@ -0,0 +1 @@
+<script>parent.done()</script>
diff --git a/parser/htmlparser/tests/mochitest/blue.png b/parser/htmlparser/tests/mochitest/blue.png
new file mode 100644
index 0000000000..8df58f3a5f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/blue.png
diff --git a/parser/htmlparser/tests/mochitest/broken_xml.xhtml b/parser/htmlparser/tests/mochitest/broken_xml.xhtml
new file mode 100644
index 0000000000..f81bf3998b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/broken_xml.xhtml
@@ -0,0 +1,7 @@
+<html>
+  <head>
+    <title>&nonExistingEntity;</title>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/browser.toml b/parser/htmlparser/tests/mochitest/browser.toml
new file mode 100644
index 0000000000..3ece65c115
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser.toml
@@ -0,0 +1,15 @@
+[DEFAULT]
+prefs = ["nglayout.debug.disable_xul_cache=true"] # we need to reload the XML file to make the test pass
+
+["browser_elementindtd.js"]
+support-files = [
+  "browser_elementindtd.xml",
+  "browser_elementindtd.dtd"
+]
+
+["browser_viewsource.js"]
+support-files = ["file_viewsource.html"]
+
+["browser_ysod_telemetry.js"]
+support-files = ["broken_xml.xhtml"]
+
diff --git a/parser/htmlparser/tests/mochitest/browser_elementindtd.dtd b/parser/htmlparser/tests/mochitest/browser_elementindtd.dtd
new file mode 100644
index 0000000000..1c2acdcda8
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser_elementindtd.dtd
@@ -0,0 +1,2 @@
+<!ENTITY entitywithelement
+'<p id="fromdtd">From dtd</p>'>
diff --git a/parser/htmlparser/tests/mochitest/browser_elementindtd.js b/parser/htmlparser/tests/mochitest/browser_elementindtd.js
new file mode 100644
index 0000000000..bc146ba73e
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser_elementindtd.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+ * https://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/*
+ * Test for bug 1539759
+ * Loads a chrome XML document that has an exteernal DTD file with an entity
+ * that contains an element, and verifies that that element was not inserted
+ * into the document (but its content was).
+ */
+
+add_task(async function test() {
+  await BrowserTestUtils.withNewTab(
+    getRootDirectory(gTestPath) + "browser_elementindtd.xml",
+    async function (newBrowser) {
+      // NB: We load the chrome:// page in the parent process.
+      testNoElementFromEntity(newBrowser);
+    }
+  );
+});
+
+function testNoElementFromEntity(newBrowser) {
+  let doc = newBrowser.contentDocument;
+  is(doc.body.textContent, "From dtd", "Should load DTD.");
+  is(
+    doc.body.firstElementChild,
+    null,
+    "Shouldn't have an element inserted from the DTD"
+  );
+}
diff --git a/parser/htmlparser/tests/mochitest/browser_elementindtd.xml b/parser/htmlparser/tests/mochitest/browser_elementindtd.xml
new file mode 100644
index 0000000000..937c896f43
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser_elementindtd.xml
@@ -0,0 +1,8 @@
+<!DOCTYPE html
+[
+  <!ENTITY % externaldtd SYSTEM "chrome://mochitests/content/browser/parser/htmlparser/tests/mochitest/browser_elementindtd.dtd" >
+  %externaldtd;
+]>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<body>&entitywithelement;</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/browser_viewsource.js b/parser/htmlparser/tests/mochitest/browser_viewsource.js
new file mode 100644
index 0000000000..e4d44e05be
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser_viewsource.js
@@ -0,0 +1,28 @@
+"use strict";
+
+add_task(async function () {
+  const PAGE_URL = getRootDirectory(gTestPath) + "file_viewsource.html";
+  let viewSourceTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "view-source:" + PAGE_URL
+  );
+
+  let xhrPromise = new Promise(resolve => {
+    let xhr = new XMLHttpRequest();
+    xhr.open("GET", PAGE_URL, true);
+    xhr.onload = event => resolve(event.target.responseText);
+    xhr.send();
+  });
+
+  let viewSourceContentPromise = SpecialPowers.spawn(
+    viewSourceTab.linkedBrowser,
+    [],
+    async function () {
+      return content.document.body.textContent;
+    }
+  );
+
+  let results = await Promise.all([viewSourceContentPromise, xhrPromise]);
+  is(results[0], results[1], "Sources should match");
+  BrowserTestUtils.removeTab(viewSourceTab);
+});
diff --git a/parser/htmlparser/tests/mochitest/browser_ysod_telemetry.js b/parser/htmlparser/tests/mochitest/browser_ysod_telemetry.js
new file mode 100644
index 0000000000..d7a654cad0
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/browser_ysod_telemetry.js
@@ -0,0 +1,49 @@
+"use strict";
+
+const { TelemetryTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/TelemetryTestUtils.sys.mjs"
+);
+
+add_task(async function test_popup_opened() {
+  Services.telemetry.clearEvents();
+  Services.telemetry.setEventRecordingEnabled("ysod", true);
+
+  const PAGE_URL = getRootDirectory(gTestPath) + "broken_xml.xhtml";
+  let viewSourceTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    PAGE_URL
+  );
+
+  let content = await SpecialPowers.spawn(
+    viewSourceTab.linkedBrowser,
+    [],
+    async function () {
+      return content.document.documentElement.innerHTML;
+    }
+  );
+
+  ok(content.includes("XML"), "Document shows XML error");
+
+  TelemetryTestUtils.assertEvents(
+    [
+      {
+        method: "shown",
+        object: "ysod",
+        value: PAGE_URL.substr(0, 80),
+        extra: {
+          error_code: "11",
+          location: "3:12",
+          last_line: "    <title>&nonExistingEntity;</title>",
+          last_line_len: "38",
+          hidden: "false",
+          destroyed: "false",
+        },
+      },
+    ],
+    {
+      category: "ysod",
+    },
+    { process: "parent" }
+  );
+  BrowserTestUtils.removeTab(viewSourceTab);
+});
diff --git a/parser/htmlparser/tests/mochitest/bug_502091_iframe.html b/parser/htmlparser/tests/mochitest/bug_502091_iframe.html
new file mode 100644
index 0000000000..076d3ed662
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/bug_502091_iframe.html
@@ -0,0 +1,17 @@
+<html>
+<head>
+<title>Crash [@ nsContentSink::ProcessHeaderData] with meta in innerHTML</title>
+</head>
+<body>
+<div id="testdiv">
+  testdiv
+  </div>
+<script>
+var x = document.createElement("div");
+x.innerHTML = '<meta http-equiv="Content-Type" content="text/html;"></meta>';
+document.getElementById("testdiv").appendChild(x);
+</script>
+some text here
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/dir_bug534293/file_bug534293.sjs b/parser/htmlparser/tests/mochitest/dir_bug534293/file_bug534293.sjs
new file mode 100644
index 0000000000..faf44df66c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/dir_bug534293/file_bug534293.sjs
@@ -0,0 +1,13 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/javascript", false);
+  if (request.queryString.includes("report")) {
+    if (getState("loaded") == "loaded") {
+      response.write("ok(true, 'This script was supposed to get fetched.');");
+    } else {
+      response.write("ok(false, 'This script was supposed to get fetched.');");
+    }
+  } else {
+    setState("loaded", "loaded");
+    response.write("ok(true, 'This script is supposed to run.');");
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_async_bug1104732.sjs b/parser/htmlparser/tests/mochitest/file_async_bug1104732.sjs
new file mode 100644
index 0000000000..5e83e50510
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_async_bug1104732.sjs
@@ -0,0 +1,17 @@
+var timer = null;
+
+function handleRequest(request, response) {
+  response.processAsync();
+  response.setHeader("Content-Type", "application/javascript", false);
+  response.write("asyncState = 'mid-async';\n");
+
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.initWithCallback(
+    function () {
+      response.write("asyncState = 'loaded';\n");
+      response.finish();
+    },
+    5 * 1000 /* milliseconds */,
+    timer.TYPE_ONE_SHOT
+  );
+}
diff --git a/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs b/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs
new file mode 100644
index 0000000000..aae7bde6a1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs
@@ -0,0 +1,18 @@
+function handleRequest(request, response) {
+  var hosts = getState("hosts");
+  hosts = hosts ? JSON.parse(hosts) : [];
+
+  if (request.queryString == "result") {
+    response.setHeader("Cache-Control", "no-cache", false);
+    response.setHeader("Content-Type", "text/json", false);
+    response.write(JSON.stringify(hosts));
+
+    setState("hosts", "[]");
+  } else {
+    response.setStatusLine("1.1", 302, "Found");
+    response.setHeader("Location", "blue.png", false);
+
+    hosts.push(request.host);
+    setState("hosts", JSON.stringify(hosts));
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug102699.sjs b/parser/htmlparser/tests/mochitest/file_bug102699.sjs
new file mode 100644
index 0000000000..6e7c57cae4
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug102699.sjs
@@ -0,0 +1,19 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/javascript", false);
+  if (request.queryString.includes("report")) {
+    if (getState("loaded") == "loaded") {
+      response.write(
+        "ok(false, 'This script was not supposed to get fetched.'); continueAfterReport();"
+      );
+    } else {
+      response.write(
+        "ok(true, 'This script was not supposed to get fetched.'); continueAfterReport();"
+      );
+    }
+  } else {
+    setState("loaded", "loaded");
+    response.write(
+      'document.documentElement.setAttribute("data-fail", "FAIL");'
+    );
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug534293-slow.sjs b/parser/htmlparser/tests/mochitest/file_bug534293-slow.sjs
new file mode 100644
index 0000000000..d2236de612
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug534293-slow.sjs
@@ -0,0 +1,16 @@
+var timer;
+
+function handleRequest(request, response) {
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "text/javascript", false);
+  response.write("ok(true, 'Slow script ran.');");
+  response.processAsync();
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.initWithCallback(
+    function () {
+      response.finish();
+    },
+    500,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug534293.sjs b/parser/htmlparser/tests/mochitest/file_bug534293.sjs
new file mode 100644
index 0000000000..279897c567
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug534293.sjs
@@ -0,0 +1,17 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/javascript", false);
+  if (request.queryString.includes("report")) {
+    if (getState("loaded") == "loaded") {
+      response.write(
+        "ok(false, 'This script was not supposed to get fetched.');"
+      );
+    } else {
+      response.write(
+        "ok(true, 'This script was not supposed to get fetched.');"
+      );
+    }
+  } else {
+    setState("loaded", "loaded");
+    response.write("ok(false, 'This script is not supposed to run.');");
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug543062.sjs b/parser/htmlparser/tests/mochitest/file_bug543062.sjs
new file mode 100644
index 0000000000..508cde5644
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug543062.sjs
@@ -0,0 +1,38 @@
+var timer;
+
+function armTimer(response) {
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.initWithCallback(
+    function () {
+      if (
+        getState("docwritepreloadssecond") == "second" &&
+        getState("docwritepreloadsthird") == "third"
+      ) {
+        response.write(
+          "ok(true, 'Second and third scripts should have started loading while the first one is loading');"
+        );
+        response.finish();
+      } else {
+        armTimer(response);
+      }
+    },
+    20,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}
+
+function handleRequest(request, response) {
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "text/javascript", false);
+  if (request.queryString.includes("first")) {
+    response.write("// first\n");
+    response.processAsync();
+    armTimer(response);
+  } else if (request.queryString.includes("second")) {
+    response.write("// second\n");
+    setState("docwritepreloadssecond", "second");
+  } else {
+    response.write("// third\n");
+    setState("docwritepreloadsthird", "third");
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug568470-script.sjs b/parser/htmlparser/tests/mochitest/file_bug568470-script.sjs
new file mode 100644
index 0000000000..7cd25ddc08
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug568470-script.sjs
@@ -0,0 +1,17 @@
+var timer = null; // Declare outside to prevent premature GC
+
+function handleRequest(request, response) {
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "text/javascript", false);
+  response.write("var i = 0;");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.initWithCallback(
+    function () {
+      response.finish();
+    },
+    500,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug568470.sjs b/parser/htmlparser/tests/mochitest/file_bug568470.sjs
new file mode 100644
index 0000000000..57559e2f6e
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug568470.sjs
@@ -0,0 +1,22 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response) {
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "text/html", false);
+  response.write("<script src='file_bug568470-script.sjs'></script>");
+  response.write("<div id='flushable'>");
+  for (var i = 0; i < 2000; i++) {
+    response.write("Lorem ipsum dolor sit amet. ");
+  }
+  response.write("</div>");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+  timer.initWithCallback(
+    function () {
+      response.finish();
+    },
+    1200,
+    Ci.nsITimer.TYPE_ONE_SHOT
+  );
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-1.html b/parser/htmlparser/tests/mochitest/file_bug594730-1.html
new file mode 100644
index 0000000000..8877311e21
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-1.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta charset="Windows-1250">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-2.html b/parser/htmlparser/tests/mochitest/file_bug594730-2.html
new file mode 100644
index 0000000000..f609df3976
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-2.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta http-equiv="content-TYPE" content="text/html; charset=Windows-1250">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-3.html b/parser/htmlparser/tests/mochitest/file_bug594730-3.html
new file mode 100644
index 0000000000..d6470d80fc
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-3.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta content="text/html; charset=Windows-1250" http-equiv="content-TYPE">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-4.html b/parser/htmlparser/tests/mochitest/file_bug594730-4.html
new file mode 100644
index 0000000000..bdce353a59
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-4.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta content="text/html; charset=Windows-1250">
+<script>parent.isnot("�", "\u0159", "Decoded bytes should not have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-5.html b/parser/htmlparser/tests/mochitest/file_bug594730-5.html
new file mode 100644
index 0000000000..9fdbdded5c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-5.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta charset="Windows-1250" content="text/html; charset=Windows-1252">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-6.html b/parser/htmlparser/tests/mochitest/file_bug594730-6.html
new file mode 100644
index 0000000000..570fa460bc
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-6.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta charset="Windows-1250" http-equiv="Content-Type" content="text/html; charset=Windows-1252">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-7.html b/parser/htmlparser/tests/mochitest/file_bug594730-7.html
new file mode 100644
index 0000000000..92c19c8ffa
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-7.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta content="text/html; charset=Windows-1250" http-equiv="Content-Type" content="text/html; charset=Windows-1252">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-8.html b/parser/htmlparser/tests/mochitest/file_bug594730-8.html
new file mode 100644
index 0000000000..a9e7525c2c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-8.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<meta charset="Windows-1250" charset="Windows-1252">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug594730-9.html b/parser/htmlparser/tests/mochitest/file_bug594730-9.html
new file mode 100644
index 0000000000..60fab3a399
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug594730-9.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<meta charset="
+  Windows-1250
+  ">
+<script>parent.is("�", "\u0159", "Decoded bytes should have matched the Unicode escape.");</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug642908.sjs b/parser/htmlparser/tests/mochitest/file_bug642908.sjs
new file mode 100644
index 0000000000..6d83609216
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug642908.sjs
@@ -0,0 +1,19 @@
+function handleRequest(request, response) {
+  if (request.queryString.includes("report")) {
+    response.setHeader("Content-Type", "text/javascript", false);
+    if (getState("loaded") == "loaded") {
+      response.write(
+        "ok(false, 'There was an attempt to preload the image.');"
+      );
+    } else {
+      response.write("ok(true, 'There was no attempt to preload the image.');");
+    }
+    response.write("SimpleTest.finish();");
+  } else {
+    setState("loaded", "loaded");
+    response.setHeader("Content-Type", "image/svg", false);
+    response.write(
+      "<svg xmlns='http://www.w3.org/2000/svg'>Not supposed to load this</svg>"
+    );
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug655682.sjs b/parser/htmlparser/tests/mochitest/file_bug655682.sjs
new file mode 100644
index 0000000000..2f1e0211c3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug655682.sjs
@@ -0,0 +1,31 @@
+var timer;
+var callback;
+
+function handleRequest(request, response) {
+  if (request.queryString.includes("trigger")) {
+    setState("triggered", "triggered");
+    response.setHeader("Cache-Control", "no-cache", false);
+    response.setHeader("Content-Type", "text/javascript; charset=utf-8", false);
+    response.write(";");
+  } else {
+    // Reset the state when running more than once in same browser session.
+    setState("triggered", "");
+
+    response.processAsync();
+    response.setHeader("Cache-Control", "no-cache", false);
+    response.setHeader("Content-Type", "text/html; charset=utf-8", false);
+    response.write("<table><tr><td>A</td>     ");
+    response.bodyOutputStream.flush();
+    timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+
+    callback = function () {
+      if (getState("triggered") == "triggered") {
+        response.write("<td>B</td></tr></table>");
+        response.finish();
+      } else {
+        timer.initWithCallback(callback, 10, Ci.nsITimer.TYPE_ONE_SHOT);
+      }
+    };
+    timer.initWithCallback(callback, 10, Ci.nsITimer.TYPE_ONE_SHOT);
+  }
+}
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_enc_error.html b/parser/htmlparser/tests/mochitest/file_bug672453_enc_error.html
new file mode 100644
index 0000000000..07d037497d
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_enc_error.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Encoding error</title>
+</head>
+<body>
+<p>�</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_enc_error_inherited.html b/parser/htmlparser/tests/mochitest/file_bug672453_enc_error_inherited.html
new file mode 100644
index 0000000000..06d44ba9b1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_enc_error_inherited.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Encoding error</title>
+</head>
+<body>
+<p>�</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html b/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html
new file mode 100644
index 0000000000..0e76edd65b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html
@@ -0,0 +1 @@
+<!DOCTYPE html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html^headers^ b/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html^headers^
new file mode 100644
index 0000000000..0cb0a6b1bf
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html^headers^
@@ -0,0 +1,2 @@
+HTTP 200 OK
+Content-Type: text/html; charset=iso-2022-kr
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html b/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html
new file mode 100644
index 0000000000..0e76edd65b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html
@@ -0,0 +1 @@
+<!DOCTYPE html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html^headers^ b/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html^headers^
new file mode 100644
index 0000000000..35885d0cc1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html^headers^
@@ -0,0 +1,2 @@
+HTTP 200 OK
+Content-Type: text/html; charset=bogus
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_late_meta.html b/parser/htmlparser/tests/mochitest/file_bug672453_late_meta.html
new file mode 100644
index 0000000000..1e0b5870f7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_late_meta.html
@@ -0,0 +1,1028 @@
+<!DOCTYPE html>
+a
+a
+a
+a
+a
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+<meta charset="UTF-8">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_after_head.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_after_head.html
new file mode 100644
index 0000000000..3def05a535
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_after_head.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Meta after head</title>
+</head>
+<body>
+<meta charset="windows-1251">
+<p>Meta after head</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_non_superset.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_non_superset.html
new file mode 100644
index 0000000000..dab8635286
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_non_superset.html
@@ -0,0 +1 @@
+<meta charset="x-imap4-modified-utf7">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_replacement.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_replacement.html
new file mode 100644
index 0000000000..9bbbe52313
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_replacement.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="iso-2022-kr">
+    <title>Replacement encoding</title>
+</head>
+<body>
+<p>Replacement encoding</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_restart.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_restart.html
new file mode 100644
index 0000000000..84bd1d3641
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_restart.html
@@ -0,0 +1,1028 @@
+<!DOCTYPE html>
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+<meta charset="ISO-8859-2">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_speculation_fail.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_speculation_fail.html
new file mode 100644
index 0000000000..b63255e981
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_speculation_fail.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Speculation f�ilure</title>
+    <meta charset="windows-1252">
+</head>
+<body>
+<p>Speculation fails</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_unsupported.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_unsupported.html
new file mode 100644
index 0000000000..91111d7e74
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_unsupported.html
@@ -0,0 +1 @@
+<meta charset="bogus">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_userdefined.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_userdefined.html
new file mode 100644
index 0000000000..250f6fa67c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_userdefined.html
@@ -0,0 +1 @@
+<meta charset="x-user-defined">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_meta_utf16.html b/parser/htmlparser/tests/mochitest/file_bug672453_meta_utf16.html
new file mode 100644
index 0000000000..2e6fb9c8b7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_meta_utf16.html
@@ -0,0 +1 @@
+<meta charset="UTF-16">
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_not_declared.html b/parser/htmlparser/tests/mochitest/file_bug672453_not_declared.html
new file mode 100644
index 0000000000..0e76edd65b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_not_declared.html
@@ -0,0 +1 @@
+<!DOCTYPE html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_xml_decl.html b/parser/htmlparser/tests/mochitest/file_bug672453_xml_decl.html
new file mode 100644
index 0000000000..ed350a1157
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_xml_decl.html
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="windows-1251"?>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Has only XML decl</title>
+</head>
+<body>
+<p>Only XML decl</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug672453_xml_speculation_fail.html b/parser/htmlparser/tests/mochitest/file_bug672453_xml_speculation_fail.html
new file mode 100644
index 0000000000..08ba678590
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug672453_xml_speculation_fail.html
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="windows-1252"?>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Speculation f�ilure</title>
+</head>
+<body>
+<p>Speculation fails</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug688580.js b/parser/htmlparser/tests/mochitest/file_bug688580.js
new file mode 100644
index 0000000000..bee04dde23
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug688580.js
@@ -0,0 +1,8 @@
+/* globals state:true */
+is(
+  document.readyState,
+  "interactive",
+  "readyState should be interactive during defer."
+);
+is(state, "readyState interactive", "Bad state upon defer");
+state = "defer";
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-16.html b/parser/htmlparser/tests/mochitest/file_bug716579-16.html
new file mode 100644
index 0000000000..1cd07ca9a5
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-16.html
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-16.html^headers^ b/parser/htmlparser/tests/mochitest/file_bug716579-16.html^headers^
new file mode 100644
index 0000000000..3fadd3bad3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-16.html^headers^
@@ -0,0 +1 @@
+Content-Type: text/html; charset=windows-874
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml b/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml
new file mode 100644
index 0000000000..cc828a7ce7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml^headers^ b/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml^headers^
new file mode 100644
index 0000000000..208b923e8f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-16.xhtml^headers^
@@ -0,0 +1 @@
+Content-Type: application/xhtml+xml; charset=windows-874
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-8.html b/parser/htmlparser/tests/mochitest/file_bug716579-8.html
new file mode 100644
index 0000000000..bbeb036db1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-8.html
@@ -0,0 +1,3 @@
+<script>
+parent.html8 = "€";
+</script>
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-8.html^headers^ b/parser/htmlparser/tests/mochitest/file_bug716579-8.html^headers^
new file mode 100644
index 0000000000..3fadd3bad3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-8.html^headers^
@@ -0,0 +1 @@
+Content-Type: text/html; charset=windows-874
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml b/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml
new file mode 100644
index 0000000000..a1221cafc7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml
@@ -0,0 +1,7 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<body>
+<script>
+parent.xml8 = "€";
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml^headers^ b/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml^headers^
new file mode 100644
index 0000000000..208b923e8f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug716579-8.xhtml^headers^
@@ -0,0 +1 @@
+Content-Type: application/xhtml+xml; charset=windows-874
diff --git a/parser/htmlparser/tests/mochitest/file_bug717180.html b/parser/htmlparser/tests/mochitest/file_bug717180.html
new file mode 100644
index 0000000000..ff43ca4091
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_bug717180.html
@@ -0,0 +1 @@
+SUCCESS
diff --git a/parser/htmlparser/tests/mochitest/file_defer_bug1104732.js b/parser/htmlparser/tests/mochitest/file_defer_bug1104732.js
new file mode 100644
index 0000000000..5ba15f287b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_defer_bug1104732.js
@@ -0,0 +1,7 @@
+/* globals state:true */
+is(
+  document.readyState,
+  "interactive",
+  "readyState should be interactive during defer."
+);
+state = "defer";
diff --git a/parser/htmlparser/tests/mochitest/file_img_picture_preload.html b/parser/htmlparser/tests/mochitest/file_img_picture_preload.html
new file mode 100644
index 0000000000..a5a55a56a3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_img_picture_preload.html
@@ -0,0 +1,167 @@
+<!DOCTYPE html>
+<html>
+<!--
+  Helper for test_img_picture_preload.htm. Can be merged in to the test file
+ when dom.image.{picture,srcset} are removed and we don't need to do pref
+ flipping before the load.
+
+  https://bugzilla.mozilla.org/show_bug.cgi?id=1067345
+-->
+<head>
+  <title>Test for Bug 1067345</title>
+</head>
+<body onload="afterLoad();">
+  <script type="text/javascript">
+    var is = window.parent.is;
+    var ok = window.parent.ok;
+    var SimpleTest = window.parent.SimpleTest;
+    // Called with number of requests made
+    var notifyTestFinished = window.parent.childTestFinished;
+    var currentDPI = window.parent.currentDPI;
+
+    // This script is intentionally blocking the images below from
+    // loading. It issues sync XHRs to the sjs to wait for the files
+    // to be requested before unblocking DOM creation, then asserts
+    // that the same sources were selected by the preloader and the
+    // real DOM.
+
+    // Number of images to wait for before unblocking load
+    const EXPECTED_PRELOADS = 11;
+
+    function busyWait(waitms) {
+      var start = Date.now();
+      while (Date.now() < start + waitms);
+    }
+
+    // Send sync XHRs asking the sjs what images it's seen until we
+    // see EXPECTED_PRELOADS images. (If this test is timing out, you broke
+    // the preloader)
+    var preloadedImages = [];
+    while (preloadedImages.length < EXPECTED_PRELOADS) {
+      var request = new XMLHttpRequest();
+      request.open("GET", "./file_img_picture_preload.sjs?status", false);
+      request.send(null);
+      is(request.status, 200, "Getting status from sjs helper should succeed");
+      if (request.status === 200) {
+        preloadedImages = JSON.parse(request.responseText);
+      }
+    }
+
+    // Ensure the DOM is still blocked on us before proceeding
+    is(document.querySelector("img"), null, "No <img> elements should exist yet");
+  </script>
+
+  <!-- All images below will be checked, use sources of the format
+       ./file_img_picture_preload.sjs?imgName:sourceName
+       Update numImages when adding or removing images below -->
+
+  <!-- Basic src -->
+  <img id="img1"
+       src="./file_img_picture_preload.sjs?img1:source1">
+  <!-- Basic srcset, no src -->
+  <img id="img2"
+       srcset="./file_img_picture_preload.sjs?img2:source1, ./file_img_picture_preload.sjs?img2:source2 2x, ./file_img_picture_preload.sjs?img2:source3 0.5x">
+  <!-- srcset + src, srcset should shadow entirley -->
+  <img id="img3"
+       srcset="./file_img_picture_preload.sjs?img3:source1, ./file_img_picture_preload.sjs?img3:source2 2x, ./file_img_picture_preload.sjs?img3:source3 0.5x">
+  <!-- Ditto with sizes selector -->
+  <img id="img4"
+       sizes="50vw"
+       srcset="./file_img_picture_preload.sjs?img4:source1 500w, ./file_img_picture_preload.sjs?img4:source2 200w, ./file_img_picture_preload.sjs?img4:source3 5w">
+  <!-- Default source shouldn't be selected -->
+  <img id="img5"
+       srcset="./file_img_picture_preload.sjs?img5:source1, ./file_img_picture_preload.sjs?img5:source2 2x"
+       src="./file_img_picture_preload.sjs?img5:source3">
+  <!-- Default source should be the 1x source, but srcset for others -->
+  <img id="img6"
+       srcset="./file_img_picture_preload.sjs?img6:source1 0.5x, ./file_img_picture_preload.sjs?img6:source2 2x"
+       src="./file_img_picture_preload.sjs?img6:source3">
+
+  <!-- Ensure we skip various invalid sources -->
+  <picture>
+    <source type="image/png">
+    <source type="image/png" srcset="">
+    <source media="(min-width: 1px)">
+    <source media="(min-width: 1px)" srcset=" ">
+    <source type="invalid/x-bogus-type" srcset="./file_img_picture_preload.sjs?img7:source1">
+    <source media="(unknown-query-value-thing: 1000something)" srcset="./file_img_picture_preload.sjs?img7:source2">
+    <source media="(unknown-query-value-thing: 1000something)" srcset="bogus ./file_img_picture_preload.sjs?img7:source3 ./file_img_picture_preload.sjs?img7:source4">
+    <img id="img7" src="./file_img_picture_preload.sjs?img7:source5">
+  </picture>
+
+  <!-- Should select matching sources with known type, and shouldn't select later sources that have closer densities-->
+  <picture>
+    <source type="invalid/x-unsupported-image-type" srcset="./file_img_picture_preload.sjs?img8:source1">
+    <source type="image/png" srcset="./file_img_picture_preload.sjs?img8:source2 2x">
+    <source type="image/png" srcset="./file_img_picture_preload.sjs?img8:source3 1x">
+    <img id="img8" src="./file_img_picture_preload.sjs?img8:source4" srcset="./file_img_picture_preload.sjs?img8:source5 2x">
+  </picture>
+
+  <!-- Should select matching sources by media, and shouldn't select later sources that have closer densities -->
+  <picture>
+    <source media="(bogusxx)" srcset="./file_img_picture_preload.sjs?img9:source1">
+    <source media="(minimum-width: 1px)" srcset="./file_img_picture_preload.sjs?img9:source2 2x">
+    <source media="(max-resolution: 0.5dppx)" srcset="./file_img_picture_preload.sjs?img9:source3 1x">
+    <source media="(min-resolution: 2dppx)" srcset="./file_img_picture_preload.sjs?img9:source4 1x">
+    <source media="(min-resolution: 1dppx)" srcset="./file_img_picture_preload.sjs?img9:source5 1x">
+    <source media="(min-resolution: 1dppx)" srcset="./file_img_picture_preload.sjs?img9:source6 2x">
+    <img id="img9" src="./file_img_picture_preload.sjs?img9:source7" srcset="./file_img_picture_preload.sjs?img9:source8 2x">
+  </picture>
+
+  <!-- Make sure we consider sizes properly in sources -->
+  <picture>
+    <source type="image/png"
+            sizes="10px"
+            srcset="./file_img_picture_preload.sjs?img10:source1 10w, ./file_img_picture_preload.sjs?img10:source2 20w">
+    <img id="img10" src="./file_img_picture_preload.sjs?img10:source3">
+  </picture>
+
+  <!-- Make sure we consider sizes properly -->
+  <img id="img11" sizes="10px"
+       srcset="./file_img_picture_preload.sjs?img11:source1 10w, ./file_img_picture_preload.sjs?img11:source2 20w"
+       src="./file_img_picture_preload.sjs?img11:source3">
+
+  <script type="text/javascript">
+    function afterLoad() {
+      // All images should have picked a source of the format
+      // imgName:sourceName, ensure we have one source per image and
+      // that it was preloaded.
+
+      is(preloadedImages.length, EXPECTED_PRELOADS,
+         "Should have exactly " + EXPECTED_PRELOADS + " preloaded URLs");
+
+      // Split "imgName:source" sources we saw preload by img name
+      var preloadByName = {};
+      for (var preload of preloadedImages) {
+        var split = preload.split(":");
+        // Ensure we didn't preload two sources for the same image
+        ok(preloadByName[split[0]] === undefined,
+           "Should not have queried multiple sources for " + split[0] +
+           " (got " + split[1] + ", already had " + preloadByName[split[0]] + ")");
+        preloadByName[split[0]] = split[1];
+      }
+
+      // Check all images, ensure each one had a preload
+      var images = document.querySelectorAll("img");
+      for (var img of images) {
+        var imgName = img.id;
+        if (img.currentSrc) {
+          split = img.currentSrc.split("?")[1].split(":");
+          is(split[0], imgName,
+             "image " + imgName + " source matches element id");
+          is(split[1], preloadByName[imgName],
+             "image " + imgName + " source should match preloaded source");
+          // Remove from array
+          delete preloadByName[imgName];
+        } else {
+          // img loaded nothing
+          is(preloadByName[imgName], null,
+             "Should not have preloaded anything for image " + imgName);
+        }
+      }
+
+      notifyTestFinished(preloadedImages.length);
+    }
+  </script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_img_picture_preload.sjs b/parser/htmlparser/tests/mochitest/file_img_picture_preload.sjs
new file mode 100644
index 0000000000..e91da04352
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_img_picture_preload.sjs
@@ -0,0 +1,27 @@
+// Return a PNG, saving an array of query strings we see as state. When query
+// string is 'status', return array as JSON
+
+function handleRequest(request, response) {
+  var seenImages = getState("seenImages");
+  seenImages = seenImages ? JSON.parse(seenImages) : [];
+
+  response.setHeader("Cache-Control", "must-revalidate", false);
+
+  if (request.queryString == "status") {
+    response.setHeader("Content-Type", "text/javascript", false);
+    response.write(JSON.stringify(seenImages));
+  } else if (request.queryString == "reset") {
+    // Respond with how many requests we had seen, drop them
+    response.setHeader("Content-Type", "text/plain", false);
+    response.write(String(seenImages.length));
+    seenImages = [];
+  } else {
+    // Return an image
+    response.setStatusLine("1.1", 302, "Found");
+    response.setHeader("Location", "blue.png", false);
+    dump(request.queryString + "\n");
+    seenImages.push(request.queryString);
+  }
+
+  setState("seenImages", JSON.stringify(seenImages));
+}
diff --git a/parser/htmlparser/tests/mochitest/file_viewsource.html b/parser/htmlparser/tests/mochitest/file_viewsource.html
new file mode 100644
index 0000000000..3ed00150a7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_viewsource.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Test for view source</title>
+  </head>
+
+  <body>
+
+<!--
+  this is a multi-line comment
+-->
+
+    <script class="testbody" type="text/javascript">
+      // This is a script comment / text.
+    </script>
+
+  </body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/file_xml_parse_error.js b/parser/htmlparser/tests/mochitest/file_xml_parse_error.js
new file mode 100644
index 0000000000..8ab5425bce
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_xml_parse_error.js
@@ -0,0 +1 @@
+parent.ok(true, "Loaded script.");
diff --git a/parser/htmlparser/tests/mochitest/file_xml_parse_error.xml b/parser/htmlparser/tests/mochitest/file_xml_parse_error.xml
new file mode 100644
index 0000000000..d75a4525e4
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/file_xml_parse_error.xml
@@ -0,0 +1,3 @@
+<?xml version="1.0" standalone="yes" ?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<p>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <script src="file_xml_parse_error.js" />                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Not a <<b>well-formed</b> xml string</p></html>
diff --git a/parser/htmlparser/tests/mochitest/html5_tree_construction_exceptions.js b/parser/htmlparser/tests/mochitest/html5_tree_construction_exceptions.js
new file mode 100644
index 0000000000..fed7e353e2
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5_tree_construction_exceptions.js
@@ -0,0 +1,11 @@
+/*
+ * These are the tests we don't pass. The test data comes from the .dat
+ * files under html5lib_tree_construction/. Please see
+ * html5lib_tree_construction/html5lib_license.txt for the license for these
+ * tests.
+ */
+var html5Exceptions = {
+  "<select><keygen>": true, // Bug 101019
+  "<p><table></p>": true, // parser_web_testrunner.js uses srcdoc which forces quirks mode
+  "<p><table></table>": true, // parser_web_testrunner.js uses srcdoc which forces quirks mode
+};
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/README.md b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/README.md
new file mode 100644
index 0000000000..be41fa44f8
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/README.md
@@ -0,0 +1,104 @@
+Tree Construction Tests
+=======================
+
+Each file containing tree construction tests consists of any number of
+tests separated by two newlines (LF) and a single newline before the end
+of the file. For instance:
+
+    [TEST]LF
+    LF
+    [TEST]LF
+    LF
+    [TEST]LF
+
+Where [TEST] is the following format:
+
+Each test must begin with a string "\#data" followed by a newline (LF).
+All subsequent lines until a line that says "\#errors" are the test data
+and must be passed to the system being tested unchanged, except with the
+final newline (on the last line) removed.
+
+Then there must be a line that says "\#errors". It must be followed by
+one line per parse error that a conformant checker would return. It
+doesn't matter what those lines are, although they can't be
+"\#document-fragment", "\#document", "\#script-off", "\#script-on", or
+empty, the only thing that matters is that there be the right number
+of parse errors.
+
+Then there \*may\* be a line that says "\#document-fragment", which must
+be followed by a newline (LF), followed by a string of characters that
+indicates the context element, followed by a newline (LF). If the string 
+of characters starts with "svg ", the context element is in the SVG
+namespace and the substring after "svg " is the local name. If the
+string of characters starts with "math ", the context element is in the
+MathML namespace and the substring after "math " is the local name.
+Otherwise, the context element is in the HTML namespace and the string
+is the local name. If this line is present the "\#data" must be parsed
+using the HTML fragment parsing algorithm with the context element as
+context.
+
+Then there \*may\* be a line that says "\#script-off" or
+"\#script-in". If a line that says "\#script-off" is present, the
+parser must set the scripting flag to disabled. If a line that says
+"\#script-on" is present, it must set it to enabled. Otherwise, the
+test should be run in both modes.
+
+Then there must be a line that says "\#document", which must be followed
+by a dump of the tree of the parsed DOM. Each node must be represented
+by a single line. Each line must start with "| ", followed by two spaces
+per parent node that the node has before the root document node.
+
+-   Element nodes must be represented by a "`<`" then the *tag name
+    string* "`>`", and all the attributes must be given, sorted
+    lexicographically by UTF-16 code unit according to their *attribute
+    name string*, on subsequent lines, as if they were children of the
+    element node.
+-   Attribute nodes must have the *attribute name string*, then an "="
+    sign, then the attribute value in double quotes (").
+-   Text nodes must be the string, in double quotes. Newlines aren't
+    escaped.
+-   Comments must be "`<`" then "`!-- `" then the data then "` -->`".
+-   DOCTYPEs must be "`<!DOCTYPE `" then the name then if either of the
+    system id or public id is non-empty a space, public id in
+    double-quotes, another space an the system id in double-quotes, and
+    then in any case "`>`".
+-   Processing instructions must be "`<?`", then the target, then a
+    space, then the data and then "`>`". (The HTML parser cannot emit
+    processing instructions, but scripts can, and the WebVTT to DOM
+    rules can emit them.)
+-   Template contents are represented by the string "content" with the
+    children below it.
+
+The *tag name string* is the local name prefixed by a namespace
+designator. For the HTML namespace, the namespace designator is the
+empty string, i.e. there's no prefix. For the SVG namespace, the
+namespace designator is "svg ". For the MathML namespace, the namespace
+designator is "math ".
+
+The *attribute name string* is the local name prefixed by a namespace
+designator. For no namespace, the namespace designator is the empty
+string, i.e. there's no prefix. For the XLink namespace, the namespace
+designator is "xlink ". For the XML namespace, the namespace designator
+is "xml ". For the XMLNS namespace, the namespace designator is "xmlns
+". Note the difference between "xlink:href" which is an attribute in no
+namespace with the local name "xlink:href" and "xlink href" which is an
+attribute in the xlink namespace with the local name "href".
+
+If there is also a "\#document-fragment" the bit following "\#document"
+must be a representation of the HTML fragment serialization for the
+context element given by "\#document-fragment".
+
+For example:
+
+    #data
+    <p>One<p>Two
+    #errors
+    3: Missing document type declaration
+    #document
+    | <html>
+    |   <head>
+    |   <body>
+    |     <p>
+    |       "One"
+    |     <p>
+    |       "Two"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption01.dat
new file mode 100644
index 0000000000..2e1127e517
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption01.dat
@@ -0,0 +1,337 @@
+#data
+<a><p></a></p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,10): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <p>
+|       <a>
+
+#data
+<a>1<p>2</a>3</p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,12): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|     <p>
+|       <a>
+|         "2"
+|       "3"
+
+#data
+<a>1<button>2</a>3</button>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,17): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|     <button>
+|       <a>
+|         "2"
+|       "3"
+
+#data
+<a>1<b>2</a>3</b>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,12): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|       <b>
+|         "2"
+|     <b>
+|       "3"
+
+#data
+<a>1<div>2<div>3</a>4</div>5</div>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,20): adoption-agency-1.3
+(1,20): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|     <div>
+|       <a>
+|         "2"
+|       <div>
+|         <a>
+|           "3"
+|         "4"
+|       "5"
+
+#data
+<table><a>1<p>2</a>3</p>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,11): unexpected-character-implies-table-voodoo
+(1,14): unexpected-start-tag-implies-table-voodoo
+(1,15): unexpected-character-implies-table-voodoo
+(1,19): unexpected-end-tag-implies-table-voodoo
+(1,19): adoption-agency-1.3
+(1,20): unexpected-character-implies-table-voodoo
+(1,24): unexpected-end-tag-implies-table-voodoo
+(1,24): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|     <p>
+|       <a>
+|         "2"
+|       "3"
+|     <table>
+
+#data
+<b><b><a><p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): adoption-agency-1.3
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <b>
+|         <a>
+|         <p>
+|           <a>
+
+#data
+<b><a><b><p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): adoption-agency-1.3
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <a>
+|         <b>
+|       <b>
+|         <p>
+|           <a>
+
+#data
+<a><b><b><p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): adoption-agency-1.3
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|         <b>
+|     <b>
+|       <b>
+|         <p>
+|           <a>
+
+#data
+<p>1<s id="A">2<b id="B">3</p>4</s>5</b>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,30): unexpected-end-tag
+(1,35): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "1"
+|       <s>
+|         id="A"
+|         "2"
+|         <b>
+|           id="B"
+|           "3"
+|     <s>
+|       id="A"
+|       <b>
+|         id="B"
+|         "4"
+|     <b>
+|       id="B"
+|       "5"
+
+#data
+<table><a>1<td>2</td>3</table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,11): unexpected-character-implies-table-voodoo
+(1,15): unexpected-cell-in-table-body
+(1,30): unexpected-implied-end-tag-in-table-view
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "1"
+|     <a>
+|       "3"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "2"
+
+#data
+<table>A<td>B</td>C</table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,8): unexpected-character-implies-table-voodoo
+(1,12): unexpected-cell-in-table-body
+(1,22): unexpected-character-implies-table-voodoo
+#document
+| <html>
+|   <head>
+|   <body>
+|     "AC"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "B"
+
+#data
+<a><svg><tr><input></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,23): unexpected-end-tag
+(1,23): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <svg svg>
+|         <svg tr>
+|           <svg input>
+
+#data
+<div><a><b><div><div><div><div><div><div><div><div><div><div></a>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): adoption-agency-1.3
+(1,65): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <a>
+|         <b>
+|       <b>
+|         <div>
+|           <a>
+|           <div>
+|             <a>
+|             <div>
+|               <a>
+|               <div>
+|                 <a>
+|                 <div>
+|                   <a>
+|                   <div>
+|                     <a>
+|                     <div>
+|                       <a>
+|                       <div>
+|                         <a>
+|                           <div>
+|                             <div>
+
+#data
+<div><a><b><u><i><code><div></a>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,32): adoption-agency-1.3
+(1,32): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <a>
+|         <b>
+|           <u>
+|             <i>
+|               <code>
+|       <u>
+|         <i>
+|           <code>
+|             <div>
+|               <a>
+
+#data
+<b><b><b><b>x</b></b></b></b>y
+#errors
+(1,3): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <b>
+|         <b>
+|           <b>
+|             "x"
+|     "y"
+
+#data
+<p><b><b><b><b><p>x
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,18): unexpected-end-tag
+(1,19): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|         <b>
+|           <b>
+|             <b>
+|     <p>
+|       <b>
+|         <b>
+|           <b>
+|             "x"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption02.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption02.dat
new file mode 100644
index 0000000000..0502cf3021
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/adoption02.dat
@@ -0,0 +1,99 @@
+#data
+<b>1<i>2<p>3</b>4
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): adoption-agency-1.3
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "1"
+|       <i>
+|         "2"
+|     <i>
+|       <p>
+|         <b>
+|           "3"
+|         "4"
+
+#data
+<a><div><style></style><address><a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,35): unexpected-start-tag-implies-end-tag
+(1,35): adoption-agency-1.3
+(1,35): adoption-agency-1.3
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <div>
+|       <a>
+|         <style>
+|       <address>
+|         <a>
+|         <a>
+
+#data
+<b><i><a><s><tt><div></b>first</b></div></tt></s></a>second</i>
+#errors
+3: Start tag seen without seeing a doctype first. Expected "<!DOCTYPE html>".
+25: End tag "b" violates nesting rules.
+34: Stray end tag "b".
+63: Stray end tag "i".
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <i>
+|         <a>
+|           <s>
+|             <tt>
+|     <a>
+|       <s>
+|         <tt>
+|           <div>
+|             <b>
+|             "first"
+|     "second"
+
+#data
+<code foo="bar"><code><code><code><code></code></code></code></code>text</code>
+#errors
+16: Start tag seen without seeing a doctype first. Expected "<!DOCTYPE html>".
+#document
+| <html>
+|   <head>
+|   <body>
+|     <code>
+|       foo="bar"
+|       <code>
+|         <code>
+|           <code>
+|             <code>
+|       "text"
+
+#data
+<code foo="bar"><code><code><code><div><code></div></code></code></code></code>text</code>
+#errors
+16: Start tag seen without seeing a doctype first. Expected "<!DOCTYPE html>".
+51: End tag "div" seen, but there were open elements.
+45: Unclosed element "code".
+58: No "code" element in scope but a "code" end tag seen.
+#document
+| <html>
+|   <head>
+|   <body>
+|     <code>
+|       foo="bar"
+|       <code>
+|         <code>
+|           <code>
+|             <div>
+|               <code>
+|       "text"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/comments01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/comments01.dat
new file mode 100644
index 0000000000..32021e15ca
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/comments01.dat
@@ -0,0 +1,206 @@
+#data
+FOO<!-- BAR -->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR  -->
+|     "BAZ"
+
+#data
+FOO<!-- BAR --!>BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,15): unexpected-bang-after-double-dash-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR  -->
+|     "BAZ"
+
+#data
+FOO<!-- BAR --! >BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:20) eof-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR --! >BAZ -->
+
+#data
+FOO<!-- BAR --!
+>BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:20) eof-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR --!
+>BAZ -->
+
+#data
+FOO<!-- BAR --   >BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,15): unexpected-char-in-comment
+(1,21): eof-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR --   >BAZ -->
+
+#data
+FOO<!-- BAR -- <QUX> -- MUX -->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,15): unexpected-char-in-comment
+(1,24): unexpected-char-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR -- <QUX> -- MUX  -->
+|     "BAZ"
+
+#data
+FOO<!-- BAR -- <QUX> -- MUX --!>BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,15): unexpected-char-in-comment
+(1,24): unexpected-char-in-comment
+(1,31): unexpected-bang-after-double-dash-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR -- <QUX> -- MUX  -->
+|     "BAZ"
+
+#data
+FOO<!-- BAR -- <QUX> -- MUX -- >BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,15): unexpected-char-in-comment
+(1,24): unexpected-char-in-comment
+(1,31): unexpected-char-in-comment
+(1,35): eof-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  BAR -- <QUX> -- MUX -- >BAZ -->
+
+#data
+FOO<!---->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  -->
+|     "BAZ"
+
+#data
+FOO<!--->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,9): incorrect-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  -->
+|     "BAZ"
+
+#data
+FOO<!-->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,8): incorrect-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!--  -->
+|     "BAZ"
+
+#data
+<?xml version="1.0">Hi
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,22): expected-doctype-but-got-chars
+#document
+| <!-- ?xml version="1.0" -->
+| <html>
+|   <head>
+|   <body>
+|     "Hi"
+
+#data
+<?xml version="1.0">
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,20): expected-doctype-but-got-eof
+#document
+| <!-- ?xml version="1.0" -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<?xml version
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,13): expected-doctype-but-got-eof
+#document
+| <!-- ?xml version -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+FOO<!----->BAZ
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,10): unexpected-dash-after-double-dash-in-comment
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <!-- - -->
+|     "BAZ"
+
+#data
+<html><!-- comment --><title>Comment before head</title>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <!--  comment  -->
+|   <head>
+|     <title>
+|       "Comment before head"
+|   <body>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/doctype01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/doctype01.dat
new file mode 100644
index 0000000000..cec6638971
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/doctype01.dat
@@ -0,0 +1,424 @@
+#data
+<!DOCTYPE html>Hello
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!dOctYpE HtMl>Hello
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPEhtml>Hello
+#errors
+(1,9): need-space-after-doctype
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE>Hello
+#errors
+(1,9): need-space-after-doctype
+(1,10): expected-doctype-name-but-got-right-bracket
+(1,10): unknown-doctype
+#document
+| <!DOCTYPE >
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE >Hello
+#errors
+(1,11): expected-doctype-name-but-got-right-bracket
+(1,11): unknown-doctype
+#document
+| <!DOCTYPE >
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato>Hello
+#errors
+(1,17): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato >Hello
+#errors
+(1,18): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato taco>Hello
+#errors
+(1,17): expected-space-or-right-bracket-in-doctype
+(1,22): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato taco "ddd>Hello
+#errors
+(1,17): expected-space-or-right-bracket-in-doctype
+(1,27): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato sYstEM>Hello
+#errors
+(1,24): unexpected-char-in-doctype
+(1,24): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato sYstEM    >Hello
+#errors
+(1,28): unexpected-char-in-doctype
+(1,28): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE   potato       sYstEM  ggg>Hello
+#errors
+(1,34): unexpected-char-in-doctype
+(1,37): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato SYSTEM taco  >Hello
+#errors
+(1,25): unexpected-char-in-doctype
+(1,31): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato SYSTEM 'taco"'>Hello
+#errors
+(1,32): unknown-doctype
+#document
+| <!DOCTYPE potato "" "taco"">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato SYSTEM "taco">Hello
+#errors
+(1,31): unknown-doctype
+#document
+| <!DOCTYPE potato "" "taco">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato SYSTEM "tai'co">Hello
+#errors
+(1,33): unknown-doctype
+#document
+| <!DOCTYPE potato "" "tai'co">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato SYSTEMtaco "ddd">Hello
+#errors
+(1,24): unexpected-char-in-doctype
+(1,34): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato grass SYSTEM taco>Hello
+#errors
+(1,17): expected-space-or-right-bracket-in-doctype
+(1,35): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato pUbLIc>Hello
+#errors
+(1,24): unexpected-end-of-doctype
+(1,24): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato pUbLIc >Hello
+#errors
+(1,25): unexpected-end-of-doctype
+(1,25): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato pUbLIcgoof>Hello
+#errors
+(1,24): unexpected-char-in-doctype
+(1,28): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato PUBLIC goof>Hello
+#errors
+(1,25): unexpected-char-in-doctype
+(1,29): unknown-doctype
+#document
+| <!DOCTYPE potato>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato PUBLIC "go'of">Hello
+#errors
+(1,32): unknown-doctype
+#document
+| <!DOCTYPE potato "go'of" "">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato PUBLIC 'go'of'>Hello
+#errors
+(1,29): unexpected-char-in-doctype
+(1,32): unknown-doctype
+#document
+| <!DOCTYPE potato "go" "">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato PUBLIC 'go:hh   of' >Hello
+#errors
+(1,38): unknown-doctype
+#document
+| <!DOCTYPE potato "go:hh   of" "">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE potato PUBLIC "W3C-//dfdf" SYSTEM ggg>Hello
+#errors
+(1,38): unexpected-char-in-doctype
+(1,48): unknown-doctype
+#document
+| <!DOCTYPE potato "W3C-//dfdf" "">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
+   "http://www.w3.org/TR/html4/strict.dtd">Hello
+#errors
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE ...>Hello
+#errors
+(1,14): unknown-doctype
+#document
+| <!DOCTYPE ...>
+| <html>
+|   <head>
+|   <body>
+|     "Hello"
+
+#data
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+#errors
+(2,58): unknown-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
+"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
+#errors
+(2,54): unknown-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE root-element [SYSTEM OR PUBLIC FPI] "uri" [ 
+<!-- internal declarations -->
+]>
+#errors
+(1,23): expected-space-or-right-bracket-in-doctype
+(2,30): unknown-doctype
+#document
+| <!DOCTYPE root-element>
+| <html>
+|   <head>
+|   <body>
+|     "]>"
+
+#data
+<!DOCTYPE html PUBLIC
+  "-//WAPFORUM//DTD XHTML Mobile 1.0//EN"
+    "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
+#errors
+(3,53): unknown-doctype
+#document
+| <!DOCTYPE html "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE HTML SYSTEM "http://www.w3.org/DTD/HTML4-strict.dtd"><body><b>Mine!</b></body>
+#errors
+(1,63): unknown-doctype
+#document
+| <!DOCTYPE html "" "http://www.w3.org/DTD/HTML4-strict.dtd">
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "Mine!"
+
+#data
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
+#errors
+(1,50): unexpected-char-in-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"'http://www.w3.org/TR/html4/strict.dtd'>
+#errors
+(1,50): unexpected-char-in-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML 4.01//EN"'http://www.w3.org/TR/html4/strict.dtd'>
+#errors
+(1,21): unexpected-char-in-doctype
+(1,49): unexpected-char-in-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE HTML PUBLIC'-//W3C//DTD HTML 4.01//EN''http://www.w3.org/TR/html4/strict.dtd'>
+#errors
+(1,21): unexpected-char-in-doctype
+(1,49): unexpected-char-in-doctype
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+| <html>
+|   <head>
+|   <body>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/domjs-unsafe.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/domjs-unsafe.dat
new file mode 100644
index 0000000000..34b4e62716
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/domjs-unsafe.dat
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities01.dat
new file mode 100644
index 0000000000..b271f8220f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities01.dat
@@ -0,0 +1,792 @@
+#data
+FOO&gt;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO>BAR"
+
+#data
+FOO&gtBAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,6): named-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO>BAR"
+
+#data
+FOO&gt BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,6): named-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO> BAR"
+
+#data
+FOO&gt;;;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO>;;BAR"
+
+#data
+I'm &notit; I tell you
+#errors
+(1,4): expected-doctype-but-got-chars
+(1,9): named-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "I'm ¬it; I tell you"
+
+#data
+I'm &notin; I tell you
+#errors
+(1,4): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "I'm ∉ I tell you"
+
+#data
+FOO& BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO& BAR"
+
+#data
+FOO&<BAR>
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,9): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&"
+|     <bar>
+
+#data
+FOO&&&&gt;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&&&>BAR"
+
+#data
+FOO&#41;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO)BAR"
+
+#data
+FOO&#x41;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOABAR"
+
+#data
+FOO&#X41;BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOABAR"
+
+#data
+FOO&#BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,5): expected-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&#BAR"
+
+#data
+FOO&#ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,5): expected-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&#ZOO"
+
+#data
+FOO&#xBAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,7): expected-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOºR"
+
+#data
+FOO&#xZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,6): expected-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&#xZOO"
+
+#data
+FOO&#XZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,6): expected-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO&#XZOO"
+
+#data
+FOO&#41BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,7): numeric-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO)BAR"
+
+#data
+FOO&#x41BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,10): numeric-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO䆺R"
+
+#data
+FOO&#x41ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,8): numeric-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOAZOO"
+
+#data
+FOO&#x0000;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#x0078;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOxZOO"
+
+#data
+FOO&#x0079;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOyZOO"
+
+#data
+FOO&#x0080;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO€ZOO"
+
+#data
+FOO&#x0081;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x0082;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO‚ZOO"
+
+#data
+FOO&#x0083;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOƒZOO"
+
+#data
+FOO&#x0084;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO„ZOO"
+
+#data
+FOO&#x0085;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO…ZOO"
+
+#data
+FOO&#x0086;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO†ZOO"
+
+#data
+FOO&#x0087;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO‡ZOO"
+
+#data
+FOO&#x0088;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOˆZOO"
+
+#data
+FOO&#x0089;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO‰ZOO"
+
+#data
+FOO&#x008A;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOŠZOO"
+
+#data
+FOO&#x008B;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO‹ZOO"
+
+#data
+FOO&#x008C;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOŒZOO"
+
+#data
+FOO&#x008D;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x008E;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOŽZOO"
+
+#data
+FOO&#x008F;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x0090;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x0091;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO‘ZOO"
+
+#data
+FOO&#x0092;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO’ZOO"
+
+#data
+FOO&#x0093;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO“ZOO"
+
+#data
+FOO&#x0094;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO”ZOO"
+
+#data
+FOO&#x0095;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO•ZOO"
+
+#data
+FOO&#x0096;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO–ZOO"
+
+#data
+FOO&#x0097;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO—ZOO"
+
+#data
+FOO&#x0098;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO˜ZOO"
+
+#data
+FOO&#x0099;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO™ZOO"
+
+#data
+FOO&#x009A;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOšZOO"
+
+#data
+FOO&#x009B;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO›ZOO"
+
+#data
+FOO&#x009C;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOœZOO"
+
+#data
+FOO&#x009D;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x009E;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOžZOO"
+
+#data
+FOO&#x009F;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOŸZOO"
+
+#data
+FOO&#x00A0;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO ZOO"
+
+#data
+FOO&#xD7FF;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO퟿ZOO"
+
+#data
+FOO&#xD800;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#xD801;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#xDFFE;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#xDFFF;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,11): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#xE000;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOOZOO"
+
+#data
+FOO&#x10FFFE;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO􏿾ZOO"
+
+#data
+FOO&#x1087D4;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO􈟔ZOO"
+
+#data
+FOO&#x10FFFF;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO􏿿ZOO"
+
+#data
+FOO&#x110000;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#xFFFFFF;ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#11111111111
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+(1,13): eof-in-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�"
+
+#data
+FOO&#1111111111
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+(1,13): eof-in-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�"
+
+#data
+FOO&#111111111111
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+(1,13): eof-in-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�"
+
+#data
+FOO&#11111111111ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#1111111111ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
+
+#data
+FOO&#111111111111ZOO
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,13): illegal-codepoint-for-numeric-entity
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO�ZOO"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities02.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities02.dat
new file mode 100644
index 0000000000..f117f068a0
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/entities02.dat
@@ -0,0 +1,283 @@
+#data
+<div bar="ZZ&gt;YY"></div>
+#errors
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ>YY"
+
+#data
+<div bar="ZZ&"></div>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&"
+
+#data
+<div bar='ZZ&'></div>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&"
+
+#data
+<div bar=ZZ&></div>
+#errors
+(1,13): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&"
+
+#data
+<div bar="ZZ&gt=YY"></div>
+#errors
+(1,15): named-entity-without-semicolon
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&gt=YY"
+
+#data
+<div bar="ZZ&gt0YY"></div>
+#errors
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&gt0YY"
+
+#data
+<div bar="ZZ&gt9YY"></div>
+#errors
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&gt9YY"
+
+#data
+<div bar="ZZ&gtaYY"></div>
+#errors
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&gtaYY"
+
+#data
+<div bar="ZZ&gtZYY"></div>
+#errors
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&gtZYY"
+
+#data
+<div bar="ZZ&gt YY"></div>
+#errors
+(1,15): named-entity-without-semicolon
+(1,20): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ> YY"
+
+#data
+<div bar="ZZ&gt"></div>
+#errors
+(1,15): named-entity-without-semicolon
+(1,17): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ>"
+
+#data
+<div bar='ZZ&gt'></div>
+#errors
+(1,15): named-entity-without-semicolon
+(1,17): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ>"
+
+#data
+<div bar=ZZ&gt></div>
+#errors
+(1,14): named-entity-without-semicolon
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ>"
+
+#data
+<div bar="ZZ&pound_id=23"></div>
+#errors
+(1,18): named-entity-without-semicolon
+(1,26): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ£_id=23"
+
+#data
+<div bar="ZZ&prod_id=23"></div>
+#errors
+(1,25): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&prod_id=23"
+
+#data
+<div bar="ZZ&pound;_id=23"></div>
+#errors
+(1,27): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ£_id=23"
+
+#data
+<div bar="ZZ&prod;_id=23"></div>
+#errors
+(1,26): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ∏_id=23"
+
+#data
+<div bar="ZZ&pound=23"></div>
+#errors
+(1,18): named-entity-without-semicolon
+(1,23): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&pound=23"
+
+#data
+<div bar="ZZ&prod=23"></div>
+#errors
+(1,22): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       bar="ZZ&prod=23"
+
+#data
+<div>ZZ&pound_id=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,13): named-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ£_id=23"
+
+#data
+<div>ZZ&prod_id=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ&prod_id=23"
+
+#data
+<div>ZZ&pound;_id=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ£_id=23"
+
+#data
+<div>ZZ&prod;_id=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ∏_id=23"
+
+#data
+<div>ZZ&pound=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,13): named-entity-without-semicolon
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ£=23"
+
+#data
+<div>ZZ&prod=23</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "ZZ&prod=23"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/foreign-fragment.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/foreign-fragment.dat
new file mode 100644
index 0000000000..2e3cb6c6f6
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/foreign-fragment.dat
@@ -0,0 +1,550 @@
+#data
+<nobr>X
+#errors
+6: HTML start tag “nobr” in a foreign namespace context.
+7: End of file seen and there were open elements.
+6: Unclosed element “nobr”.
+#document-fragment
+svg path
+#document
+| <svg nobr>
+|   "X"
+
+#data
+<font color></font>X
+#errors
+12: HTML start tag “font” in a foreign namespace context.
+#document-fragment
+svg path
+#document
+| <svg font>
+|   color=""
+| "X"
+
+#data
+<font></font>X
+#errors
+#document-fragment
+svg path
+#document
+| <svg font>
+| "X"
+
+#data
+<g></path>X
+#errors
+10: End tag “path” did not match the name of the current open element (“g”).
+11: End of file seen and there were open elements.
+3: Unclosed element “g”.
+#document-fragment
+svg path
+#document
+| <svg g>
+|   "X"
+
+#data
+</path>X
+#errors
+5: Stray end tag “path”.
+#document-fragment
+svg path
+#document
+| "X"
+
+#data
+</foreignObject>X
+#errors
+5: Stray end tag “foreignobject”.
+#document-fragment
+svg foreignObject
+#document
+| "X"
+
+#data
+</desc>X
+#errors
+5: Stray end tag “desc”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+</title>X
+#errors
+5: Stray end tag “title”.
+#document-fragment
+svg title
+#document
+| "X"
+
+#data
+</svg>X
+#errors
+5: Stray end tag “svg”.
+#document-fragment
+svg svg
+#document
+| "X"
+
+#data
+</mfenced>X
+#errors
+5: Stray end tag “mfenced”.
+#document-fragment
+math mfenced
+#document
+| "X"
+
+#data
+</malignmark>X
+#errors
+5: Stray end tag “malignmark”.
+#document-fragment
+math malignmark
+#document
+| "X"
+
+#data
+</math>X
+#errors
+5: Stray end tag “math”.
+#document-fragment
+math math
+#document
+| "X"
+
+#data
+</annotation-xml>X
+#errors
+5: Stray end tag “annotation-xml”.
+#document-fragment
+math annotation-xml
+#document
+| "X"
+
+#data
+</mtext>X
+#errors
+5: Stray end tag “mtext”.
+#document-fragment
+math mtext
+#document
+| "X"
+
+#data
+</mi>X
+#errors
+5: Stray end tag “mi”.
+#document-fragment
+math mi
+#document
+| "X"
+
+#data
+</mo>X
+#errors
+5: Stray end tag “mo”.
+#document-fragment
+math mo
+#document
+| "X"
+
+#data
+</mn>X
+#errors
+5: Stray end tag “mn”.
+#document-fragment
+math mn
+#document
+| "X"
+
+#data
+</ms>X
+#errors
+5: Stray end tag “ms”.
+#document-fragment
+math ms
+#document
+| "X"
+
+#data
+<b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
+#errors
+51: Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+52: End of file seen and there were open elements.
+51: Unclosed element “ms”.
+#document-fragment
+math ms
+#document
+| <b>
+| <math mglyph>
+| <i>
+| <math malignmark>
+| <u>
+| <ms>
+|   "X"
+
+#data
+<malignmark></malignmark>
+#errors
+#document-fragment
+math ms
+#document
+| <math malignmark>
+
+#data
+<div></div>
+#errors
+#document-fragment
+math ms
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math ms
+#document
+| <figure>
+
+#data
+<b></b><mglyph/><i></i><malignmark/><u></u><mn/>X
+#errors
+51: Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+52: End of file seen and there were open elements.
+51: Unclosed element “mn”.
+#document-fragment
+math mn
+#document
+| <b>
+| <math mglyph>
+| <i>
+| <math malignmark>
+| <u>
+| <mn>
+|   "X"
+
+#data
+<malignmark></malignmark>
+#errors
+#document-fragment
+math mn
+#document
+| <math malignmark>
+
+#data
+<div></div>
+#errors
+#document-fragment
+math mn
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math mn
+#document
+| <figure>
+
+#data
+<b></b><mglyph/><i></i><malignmark/><u></u><mo/>X
+#errors
+51: Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+52: End of file seen and there were open elements.
+51: Unclosed element “mo”.
+#document-fragment
+math mo
+#document
+| <b>
+| <math mglyph>
+| <i>
+| <math malignmark>
+| <u>
+| <mo>
+|   "X"
+
+#data
+<malignmark></malignmark>
+#errors
+#document-fragment
+math mo
+#document
+| <math malignmark>
+
+#data
+<div></div>
+#errors
+#document-fragment
+math mo
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math mo
+#document
+| <figure>
+
+#data
+<b></b><mglyph/><i></i><malignmark/><u></u><mi/>X
+#errors
+51: Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+52: End of file seen and there were open elements.
+51: Unclosed element “mi”.
+#document-fragment
+math mi
+#document
+| <b>
+| <math mglyph>
+| <i>
+| <math malignmark>
+| <u>
+| <mi>
+|   "X"
+
+#data
+<malignmark></malignmark>
+#errors
+#document-fragment
+math mi
+#document
+| <math malignmark>
+
+#data
+<div></div>
+#errors
+#document-fragment
+math mi
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math mi
+#document
+| <figure>
+
+#data
+<b></b><mglyph/><i></i><malignmark/><u></u><mtext/>X
+#errors
+51: Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+52: End of file seen and there were open elements.
+51: Unclosed element “mtext”.
+#document-fragment
+math mtext
+#document
+| <b>
+| <math mglyph>
+| <i>
+| <math malignmark>
+| <u>
+| <mtext>
+|   "X"
+
+#data
+<malignmark></malignmark>
+#errors
+#document-fragment
+math mtext
+#document
+| <math malignmark>
+
+#data
+<div></div>
+#errors
+#document-fragment
+math mtext
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math mtext
+#document
+| <figure>
+
+#data
+<div></div>
+#errors
+5: HTML start tag “div” in a foreign namespace context.
+#document-fragment
+math annotation-xml
+#document
+| <math div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math annotation-xml
+#document
+| <math figure>
+
+#data
+<div></div>
+#errors
+5: HTML start tag “div” in a foreign namespace context.
+#document-fragment
+math math
+#document
+| <math div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+math math
+#document
+| <math figure>
+
+#data
+<div></div>
+#errors
+#document-fragment
+svg foreignObject
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+svg foreignObject
+#document
+| <figure>
+
+#data
+<div></div>
+#errors
+#document-fragment
+svg title
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+svg title
+#document
+| <figure>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+svg desc
+#document
+| <figure>
+
+#data
+<div><h1>X</h1></div>
+#errors
+5: HTML start tag “div” in a foreign namespace context.
+9: HTML start tag “h1” in a foreign namespace context.
+#document-fragment
+svg svg
+#document
+| <svg div>
+|   <svg h1>
+|     "X"
+
+#data
+<div></div>
+#errors
+5: HTML start tag “div” in a foreign namespace context.
+#document-fragment
+svg svg
+#document
+| <svg div>
+
+#data
+<div></div>
+#errors
+#document-fragment
+svg desc
+#document
+| <div>
+
+#data
+<figure></figure>
+#errors
+#document-fragment
+svg desc
+#document
+| <figure>
+
+#data
+<plaintext><foo>
+#errors
+16: End of file seen and there were open elements.
+11: Unclosed element “plaintext”.
+#document-fragment
+svg desc
+#document
+| <plaintext>
+|   "<foo>"
+
+#data
+<frameset>X
+#errors
+6: Stray start tag “frameset”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+<head>X
+#errors
+6: Stray start tag “head”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+<body>X
+#errors
+6: Stray start tag “body”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+<html>X
+#errors
+6: Stray start tag “html”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+<html class="foo">X
+#errors
+6: Stray start tag “html”.
+#document-fragment
+svg desc
+#document
+| "X"
+
+#data
+<body class="foo">X
+#errors
+6: Stray start tag “body”.
+#document-fragment
+svg desc
+#document
+| "X"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_license.txt b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_license.txt
new file mode 100644
index 0000000000..63faa963ea
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_license.txt
@@ -0,0 +1,21 @@
+Copyright (c) 2006-2010 The Authors
+
+Contributors:
+James Graham - jg307@cam.ac.uk
+Anne van Kesteren - annevankesteren@gmail.com
+Lachlan Hunt - lachlan.hunt@lachy.id.au
+Matt McDonald - kanashii@kanashii.ca
+Sam Ruby - rubys@intertwingly.net
+Ian Hickson (Google) - ian@hixie.ch
+Thomas Broyer - t.broyer@ltgt.net
+Jacques Distler - distler@golem.ph.utexas.edu
+Henri Sivonen - hsivonen@iki.fi
+Adam Barth - abarth@webkit.org
+Eric Seidel - eric@webkit.org
+The Mozilla Foundation (contributions from Henri Sivonen since 2008)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_upstream.txt b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_upstream.txt
new file mode 100644
index 0000000000..5b466c614c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5lib_upstream.txt
@@ -0,0 +1,11 @@
+The test data in this directory comes from the html5lib project
+(http://code.google.com/p/html5lib/). Please avoid making 
+mozilla-central-specific changes to these files. If Gecko doesn't pass a test,
+please add the test's input data to ../html5_tree_construction_exceptions.js
+instead of removing it.
+
+If you add or edit tests, please push the test to upstream and then 
+resynchronize this directory with the upstream.
+
+See html5lib_license.txt for the license that covers the files in this
+directory.
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5test-com.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5test-com.dat
new file mode 100644
index 0000000000..8c6ec40cd7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/html5test-com.dat
@@ -0,0 +1,291 @@
+#data
+<div<div>
+#errors
+(1,9): expected-doctype-but-got-start-tag
+(1,9): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div<div>
+
+#data
+<div foo<bar=''>
+#errors
+(1,9): invalid-character-in-attribute-name
+(1,16): expected-doctype-but-got-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       foo<bar=""
+
+#data
+<div foo=`bar`>
+#errors
+(1,10): equals-in-unquoted-attribute-value
+(1,14): unexpected-character-in-unquoted-attribute-value
+(1,15): expected-doctype-but-got-start-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       foo="`bar`"
+
+#data
+<div \"foo=''>
+#errors
+(1,7): invalid-character-in-attribute-name
+(1,14): expected-doctype-but-got-start-tag
+(1,14): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       \"foo=""
+
+#data
+<a href='\nbar'></a>
+#errors
+(1,16): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="\nbar"
+
+#data
+<!DOCTYPE html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+&lang;&rang;
+#errors
+(1,6): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "⟨⟩"
+
+#data
+&apos;
+#errors
+(1,6): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "'"
+
+#data
+&ImaginaryI;
+#errors
+(1,12): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "ⅈ"
+
+#data
+&Kopf;
+#errors
+(1,6): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "𝕂"
+
+#data
+&notinva;
+#errors
+(1,9): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "∉"
+
+#data
+<?import namespace="foo" implementation="#bar">
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,47): expected-doctype-but-got-eof
+#document
+| <!-- ?import namespace="foo" implementation="#bar" -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!--foo--bar-->
+#errors
+(1,10): unexpected-char-in-comment
+(1,15): expected-doctype-but-got-eof
+#document
+| <!-- foo--bar -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<![CDATA[x]]>
+#errors
+(1,2): expected-dashes-or-doctype
+(1,13): expected-doctype-but-got-eof
+#document
+| <!-- [CDATA[x]] -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<textarea><!--</textarea>--></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,39): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<!--"
+|     "-->"
+
+#data
+<textarea><!--</textarea>-->
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<!--"
+|     "-->"
+
+#data
+<style><!--</style>--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,30): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--"
+|   <body>
+|     "-->"
+
+#data
+<style><!--</style>-->
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--"
+|   <body>
+|     "-->"
+
+#data
+<ul><li>A </li> <li>B</li></ul>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ul>
+|       <li>
+|         "A "
+|       " "
+|       <li>
+|         "B"
+
+#data
+<table><form><input type=hidden><input></form><div></div></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,13): unexpected-form-in-table
+(1,32): unexpected-hidden-input-in-table
+(1,39): unexpected-start-tag-implies-table-voodoo
+(1,46): unexpected-end-tag-implies-table-voodoo
+(1,46): unexpected-end-tag
+(1,51): unexpected-start-tag-implies-table-voodoo
+(1,57): unexpected-end-tag-implies-table-voodoo
+#document
+| <html>
+|   <head>
+|   <body>
+|     <input>
+|     <div>
+|     <table>
+|       <form>
+|       <input>
+|         type="hidden"
+
+#data
+<i>A<b>B<p></i>C</b>D
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,15): adoption-agency-1.3
+(1,20): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "A"
+|       <b>
+|         "B"
+|     <b>
+|     <p>
+|       <b>
+|         <i>
+|         "C"
+|       "D"
+
+#data
+<div></div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+
+#data
+<svg></svg>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<math></math>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/inbody01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/inbody01.dat
new file mode 100644
index 0000000000..10f6520f6f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/inbody01.dat
@@ -0,0 +1,54 @@
+#data
+<button>1</foo>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,15): unexpected-end-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <button>
+|       "1"
+
+#data
+<foo>1<p>2</foo>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,16): unexpected-end-tag
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       "1"
+|       <p>
+|         "2"
+
+#data
+<dd>1</foo>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <dd>
+|       "1"
+
+#data
+<foo>1<dd>2</foo>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): unexpected-end-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       "1"
+|       <dd>
+|         "2"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/isindex.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/isindex.dat
new file mode 100644
index 0000000000..733f82ea8e
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/isindex.dat
@@ -0,0 +1,49 @@
+#data
+<isindex>
+#errors
+(1,9): expected-doctype-but-got-start-tag
+(1,9): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <isindex>
+
+#data
+<isindex name="A" action="B" prompt="C" foo="D">
+#errors
+(1,48): expected-doctype-but-got-start-tag
+(1,48): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <isindex>
+|       action="B"
+|       foo="D"
+|       name="A"
+|       prompt="C"
+
+#data
+<form><isindex>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <isindex>
+
+#data
+<!doctype html><isindex>x</isindex>x
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <isindex>
+|       "x"
+|     "x"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/main-element.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/main-element.dat
new file mode 100644
index 0000000000..0d2102ed3f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/main-element.dat
@@ -0,0 +1,44 @@
+#data
+<!doctype html><p>foo<main>bar<p>baz
+#errors
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "foo"
+|     <main>
+|       "bar"
+|       <p>
+|         "baz"
+
+#data
+<!doctype html><main><p>foo</main>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <main>
+|       <p>
+|         "foo"
+|     "bar"
+
+#data
+<!DOCTYPE html>xxx<svg><x><g><a><main><b>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "xxx"
+|     <svg svg>
+|       <svg x>
+|         <svg g>
+|           <svg a>
+|             <svg main>
+|     <b>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes-plain-text-unsafe.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes-plain-text-unsafe.dat
new file mode 100644
index 0000000000..3ee8cec904
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes-plain-text-unsafe.dat
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes.dat
new file mode 100644
index 0000000000..1647d7f23a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/pending-spec-changes.dat
@@ -0,0 +1,46 @@
+#data
+<input type="hidden"><frameset>
+#errors
+(1,21): expected-doctype-but-got-start-tag
+(1,31): unexpected-start-tag
+(1,31): eof-in-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><table><caption><svg>foo</table>bar
+#errors
+(1,47): unexpected-end-tag
+(1,47): end-table-tag-in-caption
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <svg svg>
+|           "foo"
+|     "bar"
+
+#data
+<table><tr><td><svg><desc><td></desc><circle>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,30): unexpected-cell-end-tag
+(1,37): unexpected-end-tag
+(1,45): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|               <svg desc>
+|           <td>
+|             <circle>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/plain-text-unsafe.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/plain-text-unsafe.dat
new file mode 100644
index 0000000000..f40dd57607
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/plain-text-unsafe.dat
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/ruby.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/ruby.dat
new file mode 100644
index 0000000000..1ca8016cf1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/ruby.dat
@@ -0,0 +1,298 @@
+#data
+<html><ruby>a<rb>b<rb></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|       <rb>
+
+#data
+<html><ruby>a<rb>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rb>b<rtc></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|       <rtc>
+
+#data
+<html><ruby>a<rb>b<rp></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|       <rp>
+
+#data
+<html><ruby>a<rb>b<span></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|         <span>
+
+#data
+<html><ruby>a<rt>b<rb></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|       <rb>
+
+#data
+<html><ruby>a<rt>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rt>b<rtc></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|       <rtc>
+
+#data
+<html><ruby>a<rt>b<rp></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|       <rp>
+
+#data
+<html><ruby>a<rt>b<span></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|         <span>
+
+#data
+<html><ruby>a<rtc>b<rb></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|       <rb>
+
+#data
+<html><ruby>a<rtc>b<rt>c<rt>d</ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|         <rt>
+|           "c"
+|         <rt>
+|           "d"
+
+#data
+<html><ruby>a<rtc>b<rtc></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|       <rtc>
+
+#data
+<html><ruby>a<rtc>b<rp></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|         <rp>
+
+#data
+<html><ruby>a<rtc>b<span></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|         <span>
+
+#data
+<html><ruby>a<rp>b<rb></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|       <rb>
+
+#data
+<html><ruby>a<rp>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rp>b<rtc></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|       <rtc>
+
+#data
+<html><ruby>a<rp>b<rp></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|       <rp>
+
+#data
+<html><ruby>a<rp>b<span></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|         <span>
+
+#data
+<html><ruby><rtc><ruby>a<rb>b<rt></ruby></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <rtc>
+|         <ruby>
+|           "a"
+|           <rb>
+|             "b"
+|           <rt>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scriptdata01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scriptdata01.dat
new file mode 100644
index 0000000000..710f5414b6
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scriptdata01.dat
@@ -0,0 +1,352 @@
+#data
+FOO<script>'Hello'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'Hello'"
+|     "BAR"
+
+#data
+FOO<script></script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|     "BAR"
+
+#data
+FOO<script></script >BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|     "BAR"
+
+#data
+FOO<script></script/>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,21): self-closing-flag-on-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|     "BAR"
+
+#data
+FOO<script></script/ >BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,20): unexpected-character-after-solidus-in-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|     "BAR"
+
+#data
+FOO<script type="text/plain"></scriptx>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,42): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "</scriptx>BAR"
+
+#data
+FOO<script></script foo=">" dd>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,31): attributes-in-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|     "BAR"
+
+#data
+FOO<script>'<'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<'"
+|     "BAR"
+
+#data
+FOO<script>'<!'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!'"
+|     "BAR"
+
+#data
+FOO<script>'<!-'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-'"
+|     "BAR"
+
+#data
+FOO<script>'<!--'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!--'"
+|     "BAR"
+
+#data
+FOO<script>'<!---'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!---'"
+|     "BAR"
+
+#data
+FOO<script>'<!-->'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-->'"
+|     "BAR"
+
+#data
+FOO<script>'<!-->'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-->'"
+|     "BAR"
+
+#data
+FOO<script>'<!-- potato'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-- potato'"
+|     "BAR"
+
+#data
+FOO<script>'<!-- <sCrIpt'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-- <sCrIpt'"
+|     "BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt>'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,56): expected-script-data-but-got-eof
+(1,56): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt>'</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt> -'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,58): expected-script-data-but-got-eof
+(1,58): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt> -'</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt> --'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,59): expected-script-data-but-got-eof
+(1,59): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt> --'</script>BAR"
+
+#data
+FOO<script>'<!-- <sCrIpt> -->'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       "'<!-- <sCrIpt> -->'"
+|     "BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt> --!>'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,61): expected-script-data-but-got-eof
+(1,61): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt> --!>'</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt> -- >'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,61): expected-script-data-but-got-eof
+(1,61): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt> -- >'</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt '</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,56): expected-script-data-but-got-eof
+(1,56): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt '</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt/'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+(1,56): expected-script-data-but-got-eof
+(1,56): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt/'</script>BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt\'</script>BAR
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt\'"
+|     "BAR"
+
+#data
+FOO<script type="text/plain">'<!-- <sCrIpt/'</script>BAR</script>QUX
+#errors
+(1,3): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "FOO"
+|     <script>
+|       type="text/plain"
+|       "'<!-- <sCrIpt/'</script>BAR"
+|     "QUX"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/adoption01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/adoption01.dat
new file mode 100644
index 0000000000..4e08d0e84a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/adoption01.dat
@@ -0,0 +1,15 @@
+#data
+<p><b id="A"><script>document.getElementById("A").id = "B"</script></p>TEXT</b>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|         id="B"
+|         <script>
+|           "document.getElementById("A").id = "B""
+|     <b>
+|       id="A"
+|       "TEXT"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/ark.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/ark.dat
new file mode 100644
index 0000000000..acbac41df1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/ark.dat
@@ -0,0 +1,26 @@
+#data
+<p><font size=4><font size=4><font size=4><script>document.getElementsByTagName("font")[2].setAttribute("size", "5");</script><font size=4><p>X
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="5"
+|             <script>
+|               "document.getElementsByTagName("font")[2].setAttribute("size", "5");"
+|             <font>
+|               size="4"
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="4"
+|             "X"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/webkit01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/webkit01.dat
new file mode 100644
index 0000000000..ef4a41ca00
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/scripted/webkit01.dat
@@ -0,0 +1,28 @@
+#data
+1<script>document.write("2")</script>3
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     "1"
+|     <script>
+|       "document.write("2")"
+|     "23"
+
+#data
+1<script>document.write("<script>document.write('2')</scr"+ "ipt><script>document.write('3')</scr" + "ipt>")</script>4
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     "1"
+|     <script>
+|       "document.write("<script>document.write('2')</scr"+ "ipt><script>document.write('3')</scr" + "ipt>")"
+|     <script>
+|       "document.write('2')"
+|     "2"
+|     <script>
+|       "document.write('3')"
+|     "34"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tables01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tables01.dat
new file mode 100644
index 0000000000..f0caaa3c5f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tables01.dat
@@ -0,0 +1,286 @@
+#data
+<table><th>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,11): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <th>
+
+#data
+<table><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,11): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><col foo='bar'>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,22): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|         <col>
+|           foo="bar"
+
+#data
+<table><colgroup></html>foo
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,24): unexpected-end-tag
+(1,27): foster-parenting-character-in-table
+(1,27): foster-parenting-character-in-table
+(1,27): foster-parenting-character-in-table
+(1,27): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     "foo"
+|     <table>
+|       <colgroup>
+
+#data
+<table></table><p>foo
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|     <p>
+|       "foo"
+
+#data
+<table></body></caption></col></colgroup></html></tbody></td></tfoot></th></thead></tr><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,14): unexpected-end-tag
+(1,24): unexpected-end-tag
+(1,30): unexpected-end-tag
+(1,41): unexpected-end-tag
+(1,48): unexpected-end-tag
+(1,56): unexpected-end-tag
+(1,61): unexpected-end-tag
+(1,69): unexpected-end-tag
+(1,74): unexpected-end-tag
+(1,82): unexpected-end-tag
+(1,87): unexpected-end-tag
+(1,91): unexpected-cell-in-table-body
+(1,91): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><select><option>3</select></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-implies-table-voodoo
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|         "3"
+|     <table>
+
+#data
+<table><select><table></table></select></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-implies-table-voodoo
+(1,22): unexpected-table-element-start-tag-in-select-in-table
+(1,22): unexpected-start-tag-implies-end-tag
+(1,39): unexpected-end-tag
+(1,47): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <table>
+|     <table>
+
+#data
+<table><select></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-implies-table-voodoo
+(1,23): unexpected-table-element-end-tag-in-select-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <table>
+
+#data
+<table><select><option>A<tr><td>B</td></tr></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-implies-table-voodoo
+(1,28): unexpected-table-element-start-tag-in-select-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|         "A"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "B"
+
+#data
+<table><td></body></caption></col></colgroup></html>foo
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,18): unexpected-end-tag
+(1,28): unexpected-end-tag
+(1,34): unexpected-end-tag
+(1,45): unexpected-end-tag
+(1,52): unexpected-end-tag
+(1,55): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "foo"
+
+#data
+<table><td>A</table>B
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "A"
+|     "B"
+
+#data
+<table><tr><caption>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|       <caption>
+
+#data
+<table><tr></body></caption></col></colgroup></html></td></th><td>foo
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,18): unexpected-end-tag-in-table-row
+(1,28): unexpected-end-tag-in-table-row
+(1,34): unexpected-end-tag-in-table-row
+(1,45): unexpected-end-tag-in-table-row
+(1,52): unexpected-end-tag-in-table-row
+(1,57): unexpected-end-tag-in-table-row
+(1,62): unexpected-end-tag-in-table-row
+(1,69): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "foo"
+
+#data
+<table><td><tr>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,15): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|         <tr>
+
+#data
+<table><td><button><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,23): unexpected-cell-end-tag
+(1,23): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <button>
+|           <td>
+
+#data
+<table><tr><td><svg><desc><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,30): unexpected-cell-end-tag
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|               <svg desc>
+|           <td>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/template.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/template.dat
new file mode 100644
index 0000000000..daf587e2d7
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/template.dat
@@ -0,0 +1,1406 @@
+#data
+<body><template>Hello</template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         "Hello"
+
+#data
+<template>Hello</template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         "Hello"
+|   <body>
+
+#data
+<template></template><div></div>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|   <body>
+|     <div>
+
+#data
+<html><template>Hello</template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         "Hello"
+|   <body>
+
+#data
+<head><template><div></div></template></head>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <div>
+|   <body>
+
+#data
+<div><template><div><span></template><b>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <template>
+|         content
+|           <div>
+|             <span>
+|       <b>
+
+#data
+<div><template></div>Hello
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <template>
+|         content
+|           "Hello"
+
+#data
+<div></template></div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+
+#data
+<table><template></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+
+#data
+<table><template></template></div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+
+#data
+<table><div><template></template></div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <template>
+|         content
+|     <table>
+
+#data
+<table><template></template><div></div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|     <table>
+|       <template>
+|         content
+
+#data
+<table>   <template></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       "   "
+|       <template>
+|         content
+
+#data
+<table><tbody><template></template></tbody>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <template>
+|           content
+
+#data
+<table><tbody><template></tbody></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <template>
+|           content
+
+#data
+<table><tbody><template></template></tbody></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <template>
+|           content
+
+#data
+<table><thead><template></template></thead>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <thead>
+|         <template>
+|           content
+
+#data
+<table><tfoot><template></template></tfoot>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tfoot>
+|         <template>
+|           content
+
+#data
+<select><template></template></select>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <template>
+|         content
+
+#data
+<select><template><option></option></template></select>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <template>
+|         content
+|           <option>
+
+#data
+<template><option></option></select><option></option></template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <option>
+|         <option>
+|   <body>
+
+#data
+<select><template></template><option></select>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <template>
+|         content
+|       <option>
+
+#data
+<select><option><template></template></select>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|         <template>
+|           content
+
+#data
+<select><template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <template>
+|         content
+
+#data
+<select><option></option><template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|       <template>
+|         content
+
+#data
+<select><option></option><template><option>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|       <template>
+|         content
+|           <option>
+
+#data
+<table><thead><template><td></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <thead>
+|         <template>
+|           content
+|             <td>
+
+#data
+<table><template><thead></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <thead>
+
+#data
+<body><table><template><td></tr><div></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <td>
+|             <div>
+
+#data
+<table><template><thead></template></thead></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <thead>
+
+#data
+<table><thead><template><tr></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <thead>
+|         <template>
+|           content
+|             <tr>
+
+#data
+<table><template><tr></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <tr>
+
+#data
+<table><tr><template><td>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <template>
+|             content
+|               <td>
+
+#data
+<table><template><tr><template><td></template></tr></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <tr>
+|             <template>
+|               content
+|                 <td>
+
+#data
+<table><template><tr><template><td></td></template></tr></template></table>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <tr>
+|             <template>
+|               content
+|                 <td>
+
+#data
+<table><template><td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <template>
+|         content
+|           <td>
+
+#data
+<body><template><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+
+#data
+<body><template><template><tr></tr></template><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <tr>
+|         <td>
+
+#data
+<table><colgroup><template><col>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|         <template>
+|           content
+|             <col>
+
+#data
+<frameset><template><frame></frame></template></frameset>
+#errors
+#document
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<template><frame></frame></frameset><frame></frame></template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|   <body>
+
+#data
+<template><div><frameset><span></span></div><span></span></template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <div>
+|           <span>
+|         <span>
+|   <body>
+
+#data
+<body><template><div><frameset><span></span></div><span></span></template></body>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <div>
+|           <span>
+|         <span>
+
+#data
+<body><template><script>var i = 1;</script><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <script>
+|           "var i = 1;"
+|         <td>
+
+#data
+<body><template><tr><div></div></tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <div>
+
+#data
+<body><template><tr>Foo</tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         "Foo"
+
+#data
+<body><template><tr></tr><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <tr>
+|           <td>
+
+#data
+<body><template><td></td></tr><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+|         <td>
+
+#data
+<body><template><td></td><tbody><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+|         <td>
+
+#data
+<body><template><td></td><caption></caption><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+|         <td>
+
+#data
+<body><template><td></td><colgroup></caption><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+|         <td>
+
+#data
+<body><template><td></td></table><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <td>
+|         <td>
+
+#data
+<body><template><tr></tr><tbody><tr></tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <tr>
+
+#data
+<body><template><tr></tr><caption><tr></tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <tr>
+
+#data
+<body><template><tr></tr></table><tr></tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <tr>
+
+#data
+<body><template><thead></thead><caption></caption><tbody></tbody></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <thead>
+|         <caption>
+|         <tbody>
+
+#data
+<body><template><thead></thead></table><tbody></tbody></template></body>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <thead>
+|         <tbody>
+
+#data
+<body><template><div><tr></tr></div></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <div>
+
+#data
+<body><template><em>Hello</em></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <em>
+|           "Hello"
+
+#data
+<body><template><!--comment--></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <!-- comment -->
+
+#data
+<body><template><style></style><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <style>
+|         <td>
+
+#data
+<body><template><meta><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <meta>
+|         <td>
+
+#data
+<body><template><link><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <link>
+|         <td>
+
+#data
+<body><template><template><tr></tr></template><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <tr>
+|         <td>
+
+#data
+<body><table><colgroup><template><col></col></template></colgroup></table></body>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|         <template>
+|           content
+|             <col>
+
+#data
+<body a=b><template><div></div><body c=d><div></div></body></template></body>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     a="b"
+|     <template>
+|       content
+|         <div>
+|         <div>
+
+#data
+<html a=b><template><div><html b=c><span></template>
+#errors
+#document
+| <html>
+|   a="b"
+|   <head>
+|     <template>
+|       content
+|         <div>
+|           <span>
+|   <body>
+
+#data
+<html a=b><template><col></col><html b=c><col></col></template>
+#errors
+#document
+| <html>
+|   a="b"
+|   <head>
+|     <template>
+|       content
+|         <col>
+|         <col>
+|   <body>
+
+#data
+<html a=b><template><frame></frame><html b=c><frame></frame></template>
+#errors
+#document
+| <html>
+|   a="b"
+|   <head>
+|     <template>
+|       content
+|   <body>
+
+#data
+<body><template><tr></tr><template></template><td></td></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <tr>
+|         <template>
+|           content
+|         <tr>
+|           <td>
+
+#data
+<body><template><thead></thead><template><tr></tr></template><tr></tr><tfoot></tfoot></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <thead>
+|         <template>
+|           content
+|             <tr>
+|         <tbody>
+|           <tr>
+|         <tfoot>
+
+#data
+<body><template><template><b><template></template></template>text</template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <b>
+|               <template>
+|                 content
+|         "text"
+
+#data
+<body><template><col><colgroup>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><col></colgroup>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><col><colgroup></template></body>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><col><div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><col></div>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><col>Hello
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <col>
+
+#data
+<body><template><i><menu>Foo</i>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <i>
+|         <menu>
+|           <i>
+|             "Foo"
+
+#data
+<body><template></div><div>Foo</div><template></template><tr></tr>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <div>
+|           "Foo"
+|         <template>
+|           content
+
+#data
+<body><div><template></div><tr><td>Foo</td></tr></template>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <template>
+|         content
+|           <tr>
+|             <td>
+|               "Foo"
+
+#data
+<template></figcaption><sub><table></table>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <sub>
+|           <table>
+|   <body>
+
+#data
+<template><template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|   <body>
+
+#data
+<template><div>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <div>
+|   <body>
+
+#data
+<template><template><div>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <div>
+|   <body>
+
+#data
+<template><template><table>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <table>
+|   <body>
+
+#data
+<template><template><tbody>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <tbody>
+|   <body>
+
+#data
+<template><template><tr>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <tr>
+|   <body>
+
+#data
+<template><template><td>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <td>
+|   <body>
+
+#data
+<template><template><caption>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <caption>
+|   <body>
+
+#data
+<template><template><colgroup>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <colgroup>
+|   <body>
+
+#data
+<template><template><col>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <col>
+|   <body>
+
+#data
+<template><template><tbody><select>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <tbody>
+|             <select>
+|   <body>
+
+#data
+<template><template><table>Foo
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             "Foo"
+|             <table>
+|   <body>
+
+#data
+<template><template><table><div>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <div>
+|             <table>
+|   <body>
+
+#data
+<template><template><frame>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|   <body>
+
+#data
+<template><template><script>var i
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <script>
+|               "var i"
+|   <body>
+
+#data
+<template><template><style>var i
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <template>
+|           content
+|             <style>
+|               "var i"
+|   <body>
+
+#data
+<template><table></template><body><span>Foo
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <table>
+|   <body>
+|     <span>
+|       "Foo"
+
+#data
+<template><td></template><body><span>Foo
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <td>
+|   <body>
+|     <span>
+|       "Foo"
+
+#data
+<template><object></template><body><span>Foo
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <object>
+|   <body>
+|     <span>
+|       "Foo"
+
+#data
+<template><svg><template>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <svg svg>
+|           <svg template>
+|   <body>
+
+#data
+<template><svg><foo><template><foreignObject><div></template><div>
+#errors
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         <svg svg>
+|           <svg foo>
+|             <svg template>
+|               <svg foreignObject>
+|                 <div>
+|   <body>
+|     <div>
+
+#data
+<dummy><template><span></dummy>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <dummy>
+|       <template>
+|         content
+|           <span>
+
+#data
+<body><table><tr><td><select><template>Foo</template><caption>A</table>
+#errors
+(1,62): unexpected-caption-in-select-in-table
+(1,71): unexpected-table-end-in-caption
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <select>
+|               <template>
+|                 content
+|                   "Foo"
+|       <caption>
+|         "A"
+
+#data
+<body></body><template>
+#errors
+(1,23): template-after-body
+(1,24): eof-in-template
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+
+#data
+<head></head><template>
+#errors
+(1,23): template-after-head
+(1,24): eof-in-template
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|   <body>
+
+#data
+<head></head><template>Foo</template>
+#errors
+(1,23): template-after-head
+#document
+| <html>
+|   <head>
+|     <template>
+|       content
+|         "Foo"
+|   <body>
+
+#data
+<body><form><template><form>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <template>
+|         content
+|           <form>
+
+#data
+<body><template><table><form>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <table>
+
+#data
+<body><template><form><form>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <template>
+|       content
+|         <form>
+|           <form>
+
+#data
+<body><form><template><isindex>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <template>
+|         content
+|           <isindex>
+
+#data
+<body><form><template><isindex><form>
+#errors
+#document
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <template>
+|         content
+|           <isindex>
+|             <form>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests1.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests1.dat
new file mode 100644
index 0000000000..f12e87178c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests1.dat
@@ -0,0 +1,1959 @@
+#data
+Test
+#errors
+(1,0): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "Test"
+
+#data
+<p>One<p>Two
+#errors
+(1,3): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "One"
+|     <p>
+|       "Two"
+
+#data
+Line1<br>Line2<br>Line3<br>Line4
+#errors
+(1,0): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "Line1"
+|     <br>
+|     "Line2"
+|     <br>
+|     "Line3"
+|     <br>
+|     "Line4"
+
+#data
+<html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<head>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head></head>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head></head><body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head></head><body></body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head><body></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><head><body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<html><body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<head></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+</head>
+#errors
+(1,7): expected-doctype-but-got-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+</body>
+#errors
+(1,7): expected-doctype-but-got-end-tag element.
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+</html>
+#errors
+(1,7): expected-doctype-but-got-end-tag element.
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<b><table><td><i></table>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,25): unexpected-cell-end-tag
+(1,25): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <i>
+
+#data
+<b><table><td></b><i></table>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,18): unexpected-end-tag
+(1,29): unexpected-cell-end-tag
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <i>
+|       "X"
+
+#data
+<h1>Hello<h2>World
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,13): unexpected-start-tag
+(1,18): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <h1>
+|       "Hello"
+|     <h2>
+|       "World"
+
+#data
+<a><p>X<a>Y</a>Z</p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,10): unexpected-start-tag-implies-end-tag
+(1,10): adoption-agency-1.3
+(1,24): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <p>
+|       <a>
+|         "X"
+|       <a>
+|         "Y"
+|       "Z"
+
+#data
+<b><button>foo</b>bar
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,18): adoption-agency-1.3
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|     <button>
+|       <b>
+|         "foo"
+|       "bar"
+
+#data
+<!DOCTYPE html><span><button>foo</span>bar
+#errors
+(1,39): unexpected-end-tag
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <span>
+|       <button>
+|         "foobar"
+
+#data
+<p><b><div><marquee></p></b></div>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+(1,24): unexpected-end-tag
+(1,28): unexpected-end-tag
+(1,34): end-tag-too-early
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|     <div>
+|       <b>
+|         <marquee>
+|           <p>
+|           "X"
+
+#data
+<script><div></script></div><title><p></title><p><p>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,28): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<div>"
+|     <title>
+|       "<p>"
+|   <body>
+|     <p>
+|     <p>
+
+#data
+<!--><div>--<!-->
+#errors
+(1,5): incorrect-comment
+(1,10): expected-doctype-but-got-start-tag
+(1,17): incorrect-comment
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <!--  -->
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "--"
+|       <!--  -->
+
+#data
+<p><hr></p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <hr>
+|     <p>
+
+#data
+<select><b><option><select><option></b></select>X
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): unexpected-start-tag-in-select
+(1,27): unexpected-select-in-select
+(1,39): unexpected-end-tag
+(1,48): unexpected-end-tag
+(1,49): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|     <option>
+|       "X"
+
+#data
+<a><table><td><a><table></table><a></tr><a></table><b>X</b>C<a>Y
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,35): unexpected-start-tag-implies-end-tag
+(1,40): unexpected-cell-end-tag
+(1,43): unexpected-start-tag-implies-table-voodoo
+(1,43): unexpected-start-tag-implies-end-tag
+(1,43): unexpected-end-tag
+(1,63): unexpected-start-tag-implies-end-tag
+(1,64): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <a>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <a>
+|                 <table>
+|               <a>
+|     <a>
+|       <b>
+|         "X"
+|       "C"
+|     <a>
+|       "Y"
+
+#data
+<a X>0<b>1<a Y>2
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-implies-end-tag
+(1,15): adoption-agency-1.3
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       x=""
+|       "0"
+|       <b>
+|         "1"
+|     <b>
+|       <a>
+|         y=""
+|         "2"
+
+#data
+<!-----><font><div>hello<table>excite!<b>me!<th><i>please!</tr><!--X-->
+#errors
+(1,7): unexpected-dash-after-double-dash-in-comment
+(1,14): expected-doctype-but-got-start-tag
+(1,41): unexpected-start-tag-implies-table-voodoo
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-start-tag-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): foster-parenting-character-in-table
+(1,48): unexpected-cell-in-table-body
+(1,63): unexpected-cell-end-tag
+(1,71): eof-in-table
+#document
+| <!-- - -->
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|       <div>
+|         "helloexcite!"
+|         <b>
+|           "me!"
+|         <table>
+|           <tbody>
+|             <tr>
+|               <th>
+|                 <i>
+|                   "please!"
+|             <!-- X -->
+
+#data
+<!DOCTYPE html><li>hello<li>world<ul>how<li>do</ul>you</body><!--do-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <li>
+|       "hello"
+|     <li>
+|       "world"
+|       <ul>
+|         "how"
+|         <li>
+|           "do"
+|       "you"
+|   <!-- do -->
+
+#data
+<!DOCTYPE html>A<option>B<optgroup>C<select>D</option>E
+#errors
+(1,54): unexpected-end-tag-in-select
+(1,55): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "A"
+|     <option>
+|       "B"
+|     <optgroup>
+|       "C"
+|       <select>
+|         "DE"
+
+#data
+<
+#errors
+(1,1): expected-tag-name
+(1,1): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "<"
+
+#data
+<#
+#errors
+(1,1): expected-tag-name
+(1,1): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "<#"
+
+#data
+</
+#errors
+(1,2): expected-closing-tag-but-got-eof
+(1,2): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "</"
+
+#data
+</#
+#errors
+(1,2): expected-closing-tag-but-got-char
+(1,3): expected-doctype-but-got-eof
+#document
+| <!-- # -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<?
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,2): expected-doctype-but-got-eof
+#document
+| <!-- ? -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<?#
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,3): expected-doctype-but-got-eof
+#document
+| <!-- ?# -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!
+#errors
+(1,2): expected-dashes-or-doctype
+(1,2): expected-doctype-but-got-eof
+#document
+| <!--  -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!#
+#errors
+(1,2): expected-dashes-or-doctype
+(1,3): expected-doctype-but-got-eof
+#document
+| <!-- # -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<?COMMENT?>
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,11): expected-doctype-but-got-eof
+#document
+| <!-- ?COMMENT? -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!COMMENT>
+#errors
+(1,2): expected-dashes-or-doctype
+(1,10): expected-doctype-but-got-eof
+#document
+| <!-- COMMENT -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+</ COMMENT >
+#errors
+(1,2): expected-closing-tag-but-got-char
+(1,12): expected-doctype-but-got-eof
+#document
+| <!--  COMMENT  -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<?COM--MENT?>
+#errors
+(1,1): expected-tag-name-but-got-question-mark
+(1,13): expected-doctype-but-got-eof
+#document
+| <!-- ?COM--MENT? -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!COM--MENT>
+#errors
+(1,2): expected-dashes-or-doctype
+(1,12): expected-doctype-but-got-eof
+#document
+| <!-- COM--MENT -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+</ COM--MENT >
+#errors
+(1,2): expected-closing-tag-but-got-char
+(1,14): expected-doctype-but-got-eof
+#document
+| <!--  COM--MENT  -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><style> EOF
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       " EOF"
+|   <body>
+
+#data
+<!DOCTYPE html><script> <!-- </script> --> </script> EOF
+#errors
+(1,52): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       " <!-- "
+|     " "
+|   <body>
+|     "-->  EOF"
+
+#data
+<b><p></b>TEST
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,10): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|     <p>
+|       <b>
+|       "TEST"
+
+#data
+<p id=a><b><p id=b></b>TEST
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,19): unexpected-end-tag
+(1,23): adoption-agency-1.2
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       id="a"
+|       <b>
+|     <p>
+|       id="b"
+|       "TEST"
+
+#data
+<b id=a><p><b id=b></p></b>TEST
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): unexpected-end-tag
+(1,27): adoption-agency-1.2
+(1,31): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       id="a"
+|       <p>
+|         <b>
+|           id="b"
+|       "TEST"
+
+#data
+<!DOCTYPE html><title>U-test</title><body><div><p>Test<u></p></div></body>
+#errors
+(1,61): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "U-test"
+|   <body>
+|     <div>
+|       <p>
+|         "Test"
+|         <u>
+
+#data
+<!DOCTYPE html><font><table></font></table></font>
+#errors
+(1,35): unexpected-end-tag-implies-table-voodoo
+(1,35): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|       <table>
+
+#data
+<font><p>hello<b>cruel</font>world
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,29): adoption-agency-1.3
+(1,29): adoption-agency-1.3
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|     <p>
+|       <font>
+|         "hello"
+|         <b>
+|           "cruel"
+|       <b>
+|         "world"
+
+#data
+<b>Test</i>Test
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "TestTest"
+
+#data
+<b>A<cite>B<div>C
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "A"
+|       <cite>
+|         "B"
+|         <div>
+|           "C"
+
+#data
+<b>A<cite>B<div>C</cite>D
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,24): unexpected-end-tag
+(1,25): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "A"
+|       <cite>
+|         "B"
+|         <div>
+|           "CD"
+
+#data
+<b>A<cite>B<div>C</b>D
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,21): adoption-agency-1.3
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "A"
+|       <cite>
+|         "B"
+|     <div>
+|       <b>
+|         "C"
+|       "D"
+
+#data
+
+#errors
+(1,0): expected-doctype-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<DIV>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,5): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+
+#data
+<DIV> abc
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,9): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc"
+
+#data
+<DIV> abc <B>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,13): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+
+#data
+<DIV> abc <B> def
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def"
+
+#data
+<DIV> abc <B> def <I>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+
+#data
+<DIV> abc <B> def <I> ghi
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,25): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi"
+
+#data
+<DIV> abc <B> def <I> ghi <P>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|           <p>
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|           <p>
+|             " jkl"
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|         <p>
+|           <b>
+|             " jkl "
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B> mno
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|         <p>
+|           <b>
+|             " jkl "
+|           " mno"
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B> mno </I>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,47): adoption-agency-1.3
+(1,47): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|       <p>
+|         <i>
+|           <b>
+|             " jkl "
+|           " mno "
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B> mno </I> pqr
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,47): adoption-agency-1.3
+(1,51): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|       <p>
+|         <i>
+|           <b>
+|             " jkl "
+|           " mno "
+|         " pqr"
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B> mno </I> pqr </P>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,47): adoption-agency-1.3
+(1,56): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|       <p>
+|         <i>
+|           <b>
+|             " jkl "
+|           " mno "
+|         " pqr "
+
+#data
+<DIV> abc <B> def <I> ghi <P> jkl </B> mno </I> pqr </P> stu
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,38): adoption-agency-1.3
+(1,47): adoption-agency-1.3
+(1,60): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       " abc "
+|       <b>
+|         " def "
+|         <i>
+|           " ghi "
+|       <i>
+|       <p>
+|         <i>
+|           <b>
+|             " jkl "
+|           " mno "
+|         " pqr "
+|       " stu"
+
+#data
+<test attribute---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------->
+#errors
+(1,1040): expected-doctype-but-got-start-tag
+(1,1040): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <test>
+|       attribute----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------=""
+
+#data
+<a href="blah">aba<table><a href="foo">br<tr><td></td></tr>x</table>aoe
+#errors
+(1,15): expected-doctype-but-got-start-tag
+(1,39): unexpected-start-tag-implies-table-voodoo
+(1,39): unexpected-start-tag-implies-end-tag
+(1,39): unexpected-end-tag
+(1,45): foster-parenting-character-in-table
+(1,45): foster-parenting-character-in-table
+(1,68): foster-parenting-character-in-table
+(1,71): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="blah"
+|       "aba"
+|       <a>
+|         href="foo"
+|         "br"
+|       <a>
+|         href="foo"
+|         "x"
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|     <a>
+|       href="foo"
+|       "aoe"
+
+#data
+<a href="blah">aba<table><tr><td><a href="foo">br</td></tr>x</table>aoe
+#errors
+(1,15): expected-doctype-but-got-start-tag
+(1,54): unexpected-cell-end-tag
+(1,71): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="blah"
+|       "abax"
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <a>
+|                 href="foo"
+|                 "br"
+|       "aoe"
+
+#data
+<table><a href="blah">aba<tr><td><a href="foo">br</td></tr>x</table>aoe
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,22): unexpected-start-tag-implies-table-voodoo
+(1,29): foster-parenting-character-in-table
+(1,29): foster-parenting-character-in-table
+(1,29): foster-parenting-character-in-table
+(1,54): unexpected-cell-end-tag
+(1,68): foster-parenting-character-in-table
+(1,71): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="blah"
+|       "aba"
+|     <a>
+|       href="blah"
+|       "x"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <a>
+|               href="foo"
+|               "br"
+|     <a>
+|       href="blah"
+|       "aoe"
+
+#data
+<a href=a>aa<marquee>aa<a href=b>bb</marquee>aa
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,45): end-tag-too-early
+(1,47): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="a"
+|       "aa"
+|       <marquee>
+|         "aa"
+|         <a>
+|           href="b"
+|           "bb"
+|       "aa"
+
+#data
+<wbr><strike><code></strike><code><strike></code>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,28): adoption-agency-1.3
+(1,49): adoption-agency-1.3
+(1,49): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <wbr>
+|     <strike>
+|       <code>
+|     <code>
+|       <code>
+|         <strike>
+
+#data
+<!DOCTYPE html><spacer>foo
+#errors
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <spacer>
+|       "foo"
+
+#data
+<title><meta></title><link><title><meta></title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "<meta>"
+|     <link>
+|     <title>
+|       "<meta>"
+|   <body>
+
+#data
+<style><!--</style><meta><script>--><link></script>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--"
+|     <meta>
+|     <script>
+|       "--><link>"
+|   <body>
+
+#data
+<head><meta></head><link>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,25): unexpected-start-tag-out-of-my-head
+#document
+| <html>
+|   <head>
+|     <meta>
+|     <link>
+|   <body>
+
+#data
+<table><tr><tr><td><td><span><th><span>X</table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,33): unexpected-cell-end-tag
+(1,48): unexpected-cell-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|         <tr>
+|           <td>
+|           <td>
+|             <span>
+|           <th>
+|             <span>
+|               "X"
+
+#data
+<body><body><base><link><meta><title><p></title><body><p></body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,12): unexpected-start-tag
+(1,54): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <base>
+|     <link>
+|     <meta>
+|     <title>
+|       "<p>"
+|     <p>
+
+#data
+<textarea><p></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<p>"
+
+#data
+<p><image></p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,10): unexpected-start-tag-treated-as
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <img>
+
+#data
+<a><table><a></table><p><a><div><a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,13): unexpected-start-tag-implies-table-voodoo
+(1,13): unexpected-start-tag-implies-end-tag
+(1,13): adoption-agency-1.3
+(1,27): unexpected-start-tag-implies-end-tag
+(1,27): adoption-agency-1.2
+(1,32): unexpected-end-tag
+(1,35): unexpected-start-tag-implies-end-tag
+(1,35): adoption-agency-1.2
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <a>
+|       <table>
+|     <p>
+|       <a>
+|     <div>
+|       <a>
+
+#data
+<head></p><meta><p>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,10): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <meta>
+|   <body>
+|     <p>
+
+#data
+<head></html><meta><p>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,19): expected-eof-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <meta>
+|     <p>
+
+#data
+<b><table><td><i></table>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,25): unexpected-cell-end-tag
+(1,25): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <i>
+
+#data
+<b><table><td></b><i></table>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,18): unexpected-end-tag
+(1,29): unexpected-cell-end-tag
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <i>
+
+#data
+<h1><h2>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,8): unexpected-start-tag
+(1,8): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <h1>
+|     <h2>
+
+#data
+<a><p><a></a></p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,9): unexpected-start-tag-implies-end-tag
+(1,9): adoption-agency-1.3
+(1,21): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <p>
+|       <a>
+|       <a>
+
+#data
+<b><button></b></button></b>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,15): adoption-agency-1.3
+(1,28): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|     <button>
+|       <b>
+
+#data
+<p><b><div><marquee></p></b></div>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+(1,24): unexpected-end-tag
+(1,28): unexpected-end-tag
+(1,34): end-tag-too-early
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|     <div>
+|       <b>
+|         <marquee>
+|           <p>
+
+#data
+<script></script></div><title></title><p><p>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|     <title>
+|   <body>
+|     <p>
+|     <p>
+
+#data
+<p><hr></p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <hr>
+|     <p>
+
+#data
+<select><b><option><select><option></b></select>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): unexpected-start-tag-in-select
+(1,27): unexpected-select-in-select
+(1,39): unexpected-end-tag
+(1,48): unexpected-end-tag
+(1,48): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|     <option>
+
+#data
+<html><head><title></title><body></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|   <body>
+
+#data
+<a><table><td><a><table></table><a></tr><a></table><a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-cell-in-table-body
+(1,35): unexpected-start-tag-implies-end-tag
+(1,40): unexpected-cell-end-tag
+(1,43): unexpected-start-tag-implies-table-voodoo
+(1,43): unexpected-start-tag-implies-end-tag
+(1,43): unexpected-end-tag
+(1,54): unexpected-start-tag-implies-end-tag
+(1,54): adoption-agency-1.2
+(1,54): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <a>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <a>
+|                 <table>
+|               <a>
+|     <a>
+
+#data
+<ul><li></li><div><li></div><li><li><div><li><address><li><b><em></b><li></ul>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,45): end-tag-too-early
+(1,58): end-tag-too-early
+(1,69): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ul>
+|       <li>
+|       <div>
+|         <li>
+|       <li>
+|       <li>
+|         <div>
+|       <li>
+|         <address>
+|       <li>
+|         <b>
+|           <em>
+|       <li>
+
+#data
+<ul><li><ul></li><li>a</li></ul></li></ul>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,17): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ul>
+|       <li>
+|         <ul>
+|           <li>
+|             "a"
+
+#data
+<frameset><frame><frameset><frame></frameset><noframes></noframes></frameset>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+|     <frameset>
+|       <frame>
+|     <noframes>
+
+#data
+<h1><table><td><h3></table><h3></h1>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,15): unexpected-cell-in-table-body
+(1,27): unexpected-cell-end-tag
+(1,31): unexpected-start-tag
+(1,36): end-tag-too-early
+#document
+| <html>
+|   <head>
+|   <body>
+|     <h1>
+|       <table>
+|         <tbody>
+|           <tr>
+|             <td>
+|               <h3>
+|     <h3>
+
+#data
+<table><colgroup><col><colgroup><col><col><col><colgroup><col><col><thead><tr><td></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|         <col>
+|       <colgroup>
+|         <col>
+|         <col>
+|         <col>
+|       <colgroup>
+|         <col>
+|         <col>
+|       <thead>
+|         <tr>
+|           <td>
+
+#data
+<table><col><tbody><col><tr><col><td><col></table><col>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): unexpected-cell-in-table-body
+(1,55): unexpected-start-tag-ignored
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|         <col>
+|       <tbody>
+|       <colgroup>
+|         <col>
+|       <tbody>
+|         <tr>
+|       <colgroup>
+|         <col>
+|       <tbody>
+|         <tr>
+|           <td>
+|       <colgroup>
+|         <col>
+
+#data
+<table><colgroup><tbody><colgroup><tr><colgroup><td><colgroup></table><colgroup>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,52): unexpected-cell-in-table-body
+(1,80): unexpected-start-tag-ignored
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+|       <tbody>
+|       <colgroup>
+|       <tbody>
+|         <tr>
+|       <colgroup>
+|       <tbody>
+|         <tr>
+|           <td>
+|       <colgroup>
+
+#data
+</strong></b></em></i></u></strike></s></blink></tt></pre></big></small></font></select></h1></h2></h3></h4></h5></h6></body></br></a></img></title></span></style></script></table></th></td></tr></frame></area></link></param></hr></input></col></base></meta></basefont></bgsound></embed></spacer></p></dd></dt></caption></colgroup></tbody></tfoot></thead></address></blockquote></center></dir></div></dl></fieldset></listing></menu></ol></ul></li></nobr></wbr></form></button></marquee></object></html></frameset></head></iframe></image></isindex></noembed></noframes></noscript></optgroup></option></plaintext></textarea>
+#errors
+(1,9): expected-doctype-but-got-end-tag
+(1,9): unexpected-end-tag-before-html
+(1,13): unexpected-end-tag-before-html
+(1,18): unexpected-end-tag-before-html
+(1,22): unexpected-end-tag-before-html
+(1,26): unexpected-end-tag-before-html
+(1,35): unexpected-end-tag-before-html
+(1,39): unexpected-end-tag-before-html
+(1,47): unexpected-end-tag-before-html
+(1,52): unexpected-end-tag-before-html
+(1,58): unexpected-end-tag-before-html
+(1,64): unexpected-end-tag-before-html
+(1,72): unexpected-end-tag-before-html
+(1,79): unexpected-end-tag-before-html
+(1,88): unexpected-end-tag-before-html
+(1,93): unexpected-end-tag-before-html
+(1,98): unexpected-end-tag-before-html
+(1,103): unexpected-end-tag-before-html
+(1,108): unexpected-end-tag-before-html
+(1,113): unexpected-end-tag-before-html
+(1,118): unexpected-end-tag-before-html
+(1,130): unexpected-end-tag-after-body
+(1,130): unexpected-end-tag-treated-as
+(1,134): unexpected-end-tag
+(1,140): unexpected-end-tag
+(1,148): unexpected-end-tag
+(1,155): unexpected-end-tag
+(1,163): unexpected-end-tag
+(1,172): unexpected-end-tag
+(1,180): unexpected-end-tag
+(1,185): unexpected-end-tag
+(1,190): unexpected-end-tag
+(1,195): unexpected-end-tag
+(1,203): unexpected-end-tag
+(1,210): unexpected-end-tag
+(1,217): unexpected-end-tag
+(1,225): unexpected-end-tag
+(1,230): unexpected-end-tag
+(1,238): unexpected-end-tag
+(1,244): unexpected-end-tag
+(1,251): unexpected-end-tag
+(1,258): unexpected-end-tag
+(1,269): unexpected-end-tag
+(1,279): unexpected-end-tag
+(1,287): unexpected-end-tag
+(1,296): unexpected-end-tag
+(1,300): unexpected-end-tag
+(1,305): unexpected-end-tag
+(1,310): unexpected-end-tag
+(1,320): unexpected-end-tag
+(1,331): unexpected-end-tag
+(1,339): unexpected-end-tag
+(1,347): unexpected-end-tag
+(1,355): unexpected-end-tag
+(1,365): end-tag-too-early
+(1,378): end-tag-too-early
+(1,387): end-tag-too-early
+(1,393): end-tag-too-early
+(1,399): end-tag-too-early
+(1,404): end-tag-too-early
+(1,415): end-tag-too-early
+(1,425): end-tag-too-early
+(1,432): end-tag-too-early
+(1,437): end-tag-too-early
+(1,442): end-tag-too-early
+(1,447): unexpected-end-tag
+(1,454): unexpected-end-tag
+(1,460): unexpected-end-tag
+(1,467): unexpected-end-tag
+(1,476): end-tag-too-early
+(1,486): end-tag-too-early
+(1,495): end-tag-too-early
+(1,513): expected-eof-but-got-end-tag
+(1,513): unexpected-end-tag
+(1,520): unexpected-end-tag
+(1,529): unexpected-end-tag
+(1,537): unexpected-end-tag
+(1,547): unexpected-end-tag
+(1,557): unexpected-end-tag
+(1,568): unexpected-end-tag
+(1,579): unexpected-end-tag
+(1,590): unexpected-end-tag
+(1,599): unexpected-end-tag
+(1,611): unexpected-end-tag
+(1,622): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <br>
+|     <p>
+
+#data
+<table><tr></strong></b></em></i></u></strike></s></blink></tt></pre></big></small></font></select></h1></h2></h3></h4></h5></h6></body></br></a></img></title></span></style></script></table></th></td></tr></frame></area></link></param></hr></input></col></base></meta></basefont></bgsound></embed></spacer></p></dd></dt></caption></colgroup></tbody></tfoot></thead></address></blockquote></center></dir></div></dl></fieldset></listing></menu></ol></ul></li></nobr></wbr></form></button></marquee></object></html></frameset></head></iframe></image></isindex></noembed></noframes></noscript></optgroup></option></plaintext></textarea>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): unexpected-end-tag-implies-table-voodoo
+(1,20): unexpected-end-tag
+(1,24): unexpected-end-tag-implies-table-voodoo
+(1,24): unexpected-end-tag
+(1,29): unexpected-end-tag-implies-table-voodoo
+(1,29): unexpected-end-tag
+(1,33): unexpected-end-tag-implies-table-voodoo
+(1,33): unexpected-end-tag
+(1,37): unexpected-end-tag-implies-table-voodoo
+(1,37): unexpected-end-tag
+(1,46): unexpected-end-tag-implies-table-voodoo
+(1,46): unexpected-end-tag
+(1,50): unexpected-end-tag-implies-table-voodoo
+(1,50): unexpected-end-tag
+(1,58): unexpected-end-tag-implies-table-voodoo
+(1,58): unexpected-end-tag
+(1,63): unexpected-end-tag-implies-table-voodoo
+(1,63): unexpected-end-tag
+(1,69): unexpected-end-tag-implies-table-voodoo
+(1,69): end-tag-too-early
+(1,75): unexpected-end-tag-implies-table-voodoo
+(1,75): unexpected-end-tag
+(1,83): unexpected-end-tag-implies-table-voodoo
+(1,83): unexpected-end-tag
+(1,90): unexpected-end-tag-implies-table-voodoo
+(1,90): unexpected-end-tag
+(1,99): unexpected-end-tag-implies-table-voodoo
+(1,99): unexpected-end-tag
+(1,104): unexpected-end-tag-implies-table-voodoo
+(1,104): end-tag-too-early
+(1,109): unexpected-end-tag-implies-table-voodoo
+(1,109): end-tag-too-early
+(1,114): unexpected-end-tag-implies-table-voodoo
+(1,114): end-tag-too-early
+(1,119): unexpected-end-tag-implies-table-voodoo
+(1,119): end-tag-too-early
+(1,124): unexpected-end-tag-implies-table-voodoo
+(1,124): end-tag-too-early
+(1,129): unexpected-end-tag-implies-table-voodoo
+(1,129): end-tag-too-early
+(1,136): unexpected-end-tag-in-table-row
+(1,141): unexpected-end-tag-implies-table-voodoo
+(1,141): unexpected-end-tag-treated-as
+(1,145): unexpected-end-tag-implies-table-voodoo
+(1,145): unexpected-end-tag
+(1,151): unexpected-end-tag-implies-table-voodoo
+(1,151): unexpected-end-tag
+(1,159): unexpected-end-tag-implies-table-voodoo
+(1,159): unexpected-end-tag
+(1,166): unexpected-end-tag-implies-table-voodoo
+(1,166): unexpected-end-tag
+(1,174): unexpected-end-tag-implies-table-voodoo
+(1,174): unexpected-end-tag
+(1,183): unexpected-end-tag-implies-table-voodoo
+(1,183): unexpected-end-tag
+(1,196): unexpected-end-tag
+(1,201): unexpected-end-tag
+(1,206): unexpected-end-tag
+(1,214): unexpected-end-tag
+(1,221): unexpected-end-tag
+(1,228): unexpected-end-tag
+(1,236): unexpected-end-tag
+(1,241): unexpected-end-tag
+(1,249): unexpected-end-tag
+(1,255): unexpected-end-tag
+(1,262): unexpected-end-tag
+(1,269): unexpected-end-tag
+(1,280): unexpected-end-tag
+(1,290): unexpected-end-tag
+(1,298): unexpected-end-tag
+(1,307): unexpected-end-tag
+(1,311): unexpected-end-tag
+(1,316): unexpected-end-tag
+(1,321): unexpected-end-tag
+(1,331): unexpected-end-tag
+(1,342): unexpected-end-tag
+(1,350): unexpected-end-tag
+(1,358): unexpected-end-tag
+(1,366): unexpected-end-tag
+(1,376): end-tag-too-early
+(1,389): end-tag-too-early
+(1,398): end-tag-too-early
+(1,404): end-tag-too-early
+(1,410): end-tag-too-early
+(1,415): end-tag-too-early
+(1,426): end-tag-too-early
+(1,436): end-tag-too-early
+(1,443): end-tag-too-early
+(1,448): end-tag-too-early
+(1,453): end-tag-too-early
+(1,458): unexpected-end-tag
+(1,465): unexpected-end-tag
+(1,471): unexpected-end-tag
+(1,478): unexpected-end-tag
+(1,487): end-tag-too-early
+(1,497): end-tag-too-early
+(1,506): end-tag-too-early
+(1,524): expected-eof-but-got-end-tag
+(1,524): unexpected-end-tag
+(1,531): unexpected-end-tag
+(1,540): unexpected-end-tag
+(1,548): unexpected-end-tag
+(1,558): unexpected-end-tag
+(1,568): unexpected-end-tag
+(1,579): unexpected-end-tag
+(1,590): unexpected-end-tag
+(1,601): unexpected-end-tag
+(1,610): unexpected-end-tag
+(1,622): unexpected-end-tag
+(1,633): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <br>
+|     <table>
+|       <tbody>
+|         <tr>
+|     <p>
+
+#data
+<frameset>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,10): eof-in-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests10.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests10.dat
new file mode 100644
index 0000000000..87d94786b1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests10.dat
@@ -0,0 +1,847 @@
+#data
+<!DOCTYPE html><svg></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<!DOCTYPE html><svg></svg><![CDATA[a]]>
+#errors
+(1,28) expected-dashes-or-doctype
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|     <!-- [CDATA[a]] -->
+
+#data
+<!DOCTYPE html><body><svg></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<!DOCTYPE html><body><select><svg></svg></select>
+#errors
+(1,34) unexpected-start-tag-in-select
+(1,40) unexpected-end-tag-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!DOCTYPE html><body><select><option><svg></svg></option></select>
+#errors
+(1,42) unexpected-start-tag-in-select
+(1,48) unexpected-end-tag-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+
+#data
+<!DOCTYPE html><body><table><svg></svg></table>
+#errors
+(1,33) foster-parenting-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><svg><g>foo</g></svg></table>
+#errors
+(1,33) foster-parenting-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><svg><g>foo</g><g>bar</g></svg></table>
+#errors
+(1,33) foster-parenting-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><tbody><svg><g>foo</g><g>bar</g></svg></tbody></table>
+#errors
+(1,40) foster-parenting-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <table>
+|       <tbody>
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><svg><g>foo</g><g>bar</g></svg></tr></tbody></table>
+#errors
+(1,44) foster-parenting-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><td><svg><g>foo</g><g>bar</g></svg></td></tr></tbody></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|               <svg g>
+|                 "foo"
+|               <svg g>
+|                 "bar"
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><td><svg><g>foo</g><g>bar</g></svg><p>baz</td></tr></tbody></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|               <svg g>
+|                 "foo"
+|               <svg g>
+|                 "bar"
+|             <p>
+|               "baz"
+
+#data
+<!DOCTYPE html><body><table><caption><svg><g>foo</g><g>bar</g></svg><p>baz</caption></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <svg svg>
+|           <svg g>
+|             "foo"
+|           <svg g>
+|             "bar"
+|         <p>
+|           "baz"
+
+#data
+<!DOCTYPE html><body><table><caption><svg><g>foo</g><g>bar</g><p>baz</table><p>quux
+#errors
+(1,65) unexpected-html-element-in-foreign-content
+(1,76) XXX-undefined-error
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <svg svg>
+|           <svg g>
+|             "foo"
+|           <svg g>
+|             "bar"
+|         <p>
+|           "baz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><caption><svg><g>foo</g><g>bar</g>baz</table><p>quux
+#errors
+(1,73) unexpected-end-tag
+(1,73) expected-one-end-tag-but-got-another
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <svg svg>
+|           <svg g>
+|             "foo"
+|           <svg g>
+|             "bar"
+|           "baz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><colgroup><svg><g>foo</g><g>bar</g><p>baz</table><p>quux
+#errors
+(1,43) foster-parenting-start-tag
+(1,66) foster-parenting-start-tag
+(1,67) foster-parenting-character
+(1,68) foster-parenting-character
+(1,69) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <p>
+|       "baz"
+|     <table>
+|       <colgroup>
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><tr><td><select><svg><g>foo</g><g>bar</g><p>baz</table><p>quux
+#errors
+(1,49) unexpected-start-tag-in-select
+(1,52) unexpected-start-tag-in-select
+(1,59) unexpected-end-tag-in-select
+(1,62) unexpected-start-tag-in-select
+(1,69) unexpected-end-tag-in-select
+(1,72) unexpected-start-tag-in-select
+(1,83) unexpected-table-element-end-tag-in-select-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <select>
+|               "foobarbaz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><select><svg><g>foo</g><g>bar</g><p>baz</table><p>quux
+#errors
+(1,36) unexpected-start-tag-implies-table-voodoo
+(1,41) unexpected-start-tag-in-select
+(1,44) unexpected-start-tag-in-select
+(1,51) unexpected-end-tag-in-select
+(1,54) unexpected-start-tag-in-select
+(1,61) unexpected-end-tag-in-select
+(1,64) unexpected-start-tag-in-select
+(1,75) unexpected-table-element-end-tag-in-select-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       "foobarbaz"
+|     <table>
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body></body></html><svg><g>foo</g><g>bar</g><p>baz
+#errors
+(1,40) expected-eof-but-got-start-tag
+(1,63) unexpected-html-element-in-foreign-content
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <p>
+|       "baz"
+
+#data
+<!DOCTYPE html><body></body><svg><g>foo</g><g>bar</g><p>baz
+#errors
+(1,33) unexpected-start-tag-after-body
+(1,56) unexpected-html-element-in-foreign-content
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg g>
+|         "foo"
+|       <svg g>
+|         "bar"
+|     <p>
+|       "baz"
+
+#data
+<!DOCTYPE html><frameset><svg><g></g><g></g><p><span>
+#errors
+(1,30) unexpected-start-tag-in-frameset
+(1,33) unexpected-start-tag-in-frameset
+(1,37) unexpected-end-tag-in-frameset
+(1,40) unexpected-start-tag-in-frameset
+(1,44) unexpected-end-tag-in-frameset
+(1,47) unexpected-start-tag-in-frameset
+(1,53) unexpected-start-tag-in-frameset
+(1,53) eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><frameset></frameset><svg><g></g><g></g><p><span>
+#errors
+(1,41) unexpected-start-tag-after-frameset
+(1,44) unexpected-start-tag-after-frameset
+(1,48) unexpected-end-tag-after-frameset
+(1,51) unexpected-start-tag-after-frameset
+(1,55) unexpected-end-tag-after-frameset
+(1,58) unexpected-start-tag-after-frameset
+(1,64) unexpected-start-tag-after-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><body xlink:href=foo><svg xlink:href=foo></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     <svg svg>
+|       xlink href="foo"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><svg><g xml:lang=en xlink:href=foo></g></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <svg svg>
+|       <svg g>
+|         xlink href="foo"
+|         xml lang="en"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><svg><g xml:lang=en xlink:href=foo /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <svg svg>
+|       <svg g>
+|         xlink href="foo"
+|         xml lang="en"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><svg><g xml:lang=en xlink:href=foo />bar</svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <svg svg>
+|       <svg g>
+|         xlink href="foo"
+|         xml lang="en"
+|       "bar"
+
+#data
+<svg></path>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,12) unexpected-end-tag
+(1,12) unexpected-end-tag
+(1,12) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<div><svg></div>a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,16) unexpected-end-tag
+(1,16) end-tag-too-early
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|     "a"
+
+#data
+<div><svg><path></div>a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,22) unexpected-end-tag
+(1,22) end-tag-too-early
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|         <svg path>
+|     "a"
+
+#data
+<div><svg><path></svg><path>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,22) unexpected-end-tag
+(1,28) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|         <svg path>
+|       <path>
+
+#data
+<div><svg><path><foreignObject><math></div>a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,43) unexpected-end-tag
+(1,43) end-tag-too-early
+(1,44) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|         <svg path>
+|           <svg foreignObject>
+|             <math math>
+|               "a"
+
+#data
+<div><svg><path><foreignObject><p></div>a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,40) end-tag-too-early
+(1,41) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|         <svg path>
+|           <svg foreignObject>
+|             <p>
+|               "a"
+
+#data
+<!DOCTYPE html><svg><desc><div><svg><ul>a
+#errors
+(1,40) unexpected-html-element-in-foreign-content
+(1,41) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg desc>
+|         <div>
+|           <svg svg>
+|           <ul>
+|             "a"
+
+#data
+<!DOCTYPE html><svg><desc><svg><ul>a
+#errors
+(1,35) unexpected-html-element-in-foreign-content
+(1,36) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg desc>
+|         <svg svg>
+|         <ul>
+|           "a"
+
+#data
+<!DOCTYPE html><p><svg><desc><p>
+#errors
+(1,32) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <svg svg>
+|         <svg desc>
+|           <p>
+
+#data
+<!DOCTYPE html><p><svg><title><p>
+#errors
+(1,33) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <svg svg>
+|         <svg title>
+|           <p>
+
+#data
+<div><svg><path><foreignObject><p></foreignObject><p>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,50) unexpected-end-tag
+(1,53) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <svg svg>
+|         <svg path>
+|           <svg foreignObject>
+|             <p>
+|             <p>
+
+#data
+<math><mi><div><object><div><span></span></div></object></div></mi><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,71) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         <div>
+|           <object>
+|             <div>
+|               <span>
+|       <math mi>
+
+#data
+<math><mi><svg><foreignObject><div><div></div></div></foreignObject></svg></mi><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,83) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         <svg svg>
+|           <svg foreignObject>
+|             <div>
+|               <div>
+|       <math mi>
+
+#data
+<svg><script></script><path>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,28) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg script>
+|       <svg path>
+
+#data
+<table><svg></svg><tr>
+#errors
+(1,7) expected-doctype-but-got-start-tag
+(1,12) unexpected-start-tag-implies-table-voodoo
+(1,22) eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<math><mi><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         <math mglyph>
+
+#data
+<math><mi><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         <math malignmark>
+
+#data
+<math><mo><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mo>
+|         <math mglyph>
+
+#data
+<math><mo><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mo>
+|         <math malignmark>
+
+#data
+<math><mn><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mn>
+|         <math mglyph>
+
+#data
+<math><mn><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mn>
+|         <math malignmark>
+
+#data
+<math><ms><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math ms>
+|         <math mglyph>
+
+#data
+<math><ms><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math ms>
+|         <math malignmark>
+
+#data
+<math><mtext><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,21) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mtext>
+|         <math mglyph>
+
+#data
+<math><mtext><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,25) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mtext>
+|         <math malignmark>
+
+#data
+<math><annotation-xml><svg></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,54) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         <svg svg>
+|       <math mi>
+
+#data
+<math><annotation-xml><svg><foreignObject><div><math><mi></mi></math><span></span></div></foreignObject><path></path></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,144) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         <svg svg>
+|           <svg foreignObject>
+|             <div>
+|               <math math>
+|                 <math mi>
+|               <span>
+|           <svg path>
+|       <math mi>
+
+#data
+<math><annotation-xml><svg><foreignObject><math><mi><svg></svg></mi><mo></mo></math><span></span></foreignObject><path></path></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,153) expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         <svg svg>
+|           <svg foreignObject>
+|             <math math>
+|               <math mi>
+|                 <svg svg>
+|               <math mo>
+|             <span>
+|           <svg path>
+|       <math mi>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests11.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests11.dat
new file mode 100644
index 0000000000..ad62cdf659
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests11.dat
@@ -0,0 +1,482 @@
+#data
+<!DOCTYPE html><body><svg attributeName='' attributeType='' baseFrequency='' baseProfile='' calcMode='' clipPathUnits='' contentScriptType='' contentStyleType='' diffuseConstant='' edgeMode='' externalResourcesRequired='' filterRes='' filterUnits='' glyphRef='' gradientTransform='' gradientUnits='' kernelMatrix='' kernelUnitLength='' keyPoints='' keySplines='' keyTimes='' lengthAdjust='' limitingConeAngle='' markerHeight='' markerUnits='' markerWidth='' maskContentUnits='' maskUnits='' numOctaves='' pathLength='' patternContentUnits='' patternTransform='' patternUnits='' pointsAtX='' pointsAtY='' pointsAtZ='' preserveAlpha='' preserveAspectRatio='' primitiveUnits='' refX='' refY='' repeatCount='' repeatDur='' requiredExtensions='' requiredFeatures='' specularConstant='' specularExponent='' spreadMethod='' startOffset='' stdDeviation='' stitchTiles='' surfaceScale='' systemLanguage='' tableValues='' targetX='' targetY='' textLength='' viewBox='' viewTarget='' xChannelSelector='' yChannelSelector='' zoomAndPan=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       attributeName=""
+|       attributeType=""
+|       baseFrequency=""
+|       baseProfile=""
+|       calcMode=""
+|       clipPathUnits=""
+|       contentscripttype=""
+|       contentstyletype=""
+|       diffuseConstant=""
+|       edgeMode=""
+|       externalresourcesrequired=""
+|       filterUnits=""
+|       filterres=""
+|       glyphRef=""
+|       gradientTransform=""
+|       gradientUnits=""
+|       kernelMatrix=""
+|       kernelUnitLength=""
+|       keyPoints=""
+|       keySplines=""
+|       keyTimes=""
+|       lengthAdjust=""
+|       limitingConeAngle=""
+|       markerHeight=""
+|       markerUnits=""
+|       markerWidth=""
+|       maskContentUnits=""
+|       maskUnits=""
+|       numOctaves=""
+|       pathLength=""
+|       patternContentUnits=""
+|       patternTransform=""
+|       patternUnits=""
+|       pointsAtX=""
+|       pointsAtY=""
+|       pointsAtZ=""
+|       preserveAlpha=""
+|       preserveAspectRatio=""
+|       primitiveUnits=""
+|       refX=""
+|       refY=""
+|       repeatCount=""
+|       repeatDur=""
+|       requiredExtensions=""
+|       requiredFeatures=""
+|       specularConstant=""
+|       specularExponent=""
+|       spreadMethod=""
+|       startOffset=""
+|       stdDeviation=""
+|       stitchTiles=""
+|       surfaceScale=""
+|       systemLanguage=""
+|       tableValues=""
+|       targetX=""
+|       targetY=""
+|       textLength=""
+|       viewBox=""
+|       viewTarget=""
+|       xChannelSelector=""
+|       yChannelSelector=""
+|       zoomAndPan=""
+
+#data
+<!DOCTYPE html><BODY><SVG ATTRIBUTENAME='' ATTRIBUTETYPE='' BASEFREQUENCY='' BASEPROFILE='' CALCMODE='' CLIPPATHUNITS='' CONTENTSCRIPTTYPE='' CONTENTSTYLETYPE='' DIFFUSECONSTANT='' EDGEMODE='' EXTERNALRESOURCESREQUIRED='' FILTERRES='' FILTERUNITS='' GLYPHREF='' GRADIENTTRANSFORM='' GRADIENTUNITS='' KERNELMATRIX='' KERNELUNITLENGTH='' KEYPOINTS='' KEYSPLINES='' KEYTIMES='' LENGTHADJUST='' LIMITINGCONEANGLE='' MARKERHEIGHT='' MARKERUNITS='' MARKERWIDTH='' MASKCONTENTUNITS='' MASKUNITS='' NUMOCTAVES='' PATHLENGTH='' PATTERNCONTENTUNITS='' PATTERNTRANSFORM='' PATTERNUNITS='' POINTSATX='' POINTSATY='' POINTSATZ='' PRESERVEALPHA='' PRESERVEASPECTRATIO='' PRIMITIVEUNITS='' REFX='' REFY='' REPEATCOUNT='' REPEATDUR='' REQUIREDEXTENSIONS='' REQUIREDFEATURES='' SPECULARCONSTANT='' SPECULAREXPONENT='' SPREADMETHOD='' STARTOFFSET='' STDDEVIATION='' STITCHTILES='' SURFACESCALE='' SYSTEMLANGUAGE='' TABLEVALUES='' TARGETX='' TARGETY='' TEXTLENGTH='' VIEWBOX='' VIEWTARGET='' XCHANNELSELECTOR='' YCHANNELSELECTOR='' ZOOMANDPAN=''></SVG>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       attributeName=""
+|       attributeType=""
+|       baseFrequency=""
+|       baseProfile=""
+|       calcMode=""
+|       clipPathUnits=""
+|       contentscripttype=""
+|       contentstyletype=""
+|       diffuseConstant=""
+|       edgeMode=""
+|       externalresourcesrequired=""
+|       filterUnits=""
+|       filterres=""
+|       glyphRef=""
+|       gradientTransform=""
+|       gradientUnits=""
+|       kernelMatrix=""
+|       kernelUnitLength=""
+|       keyPoints=""
+|       keySplines=""
+|       keyTimes=""
+|       lengthAdjust=""
+|       limitingConeAngle=""
+|       markerHeight=""
+|       markerUnits=""
+|       markerWidth=""
+|       maskContentUnits=""
+|       maskUnits=""
+|       numOctaves=""
+|       pathLength=""
+|       patternContentUnits=""
+|       patternTransform=""
+|       patternUnits=""
+|       pointsAtX=""
+|       pointsAtY=""
+|       pointsAtZ=""
+|       preserveAlpha=""
+|       preserveAspectRatio=""
+|       primitiveUnits=""
+|       refX=""
+|       refY=""
+|       repeatCount=""
+|       repeatDur=""
+|       requiredExtensions=""
+|       requiredFeatures=""
+|       specularConstant=""
+|       specularExponent=""
+|       spreadMethod=""
+|       startOffset=""
+|       stdDeviation=""
+|       stitchTiles=""
+|       surfaceScale=""
+|       systemLanguage=""
+|       tableValues=""
+|       targetX=""
+|       targetY=""
+|       textLength=""
+|       viewBox=""
+|       viewTarget=""
+|       xChannelSelector=""
+|       yChannelSelector=""
+|       zoomAndPan=""
+
+#data
+<!DOCTYPE html><body><svg attributename='' attributetype='' basefrequency='' baseprofile='' calcmode='' clippathunits='' contentscripttype='' contentstyletype='' diffuseconstant='' edgemode='' externalresourcesrequired='' filterres='' filterunits='' glyphref='' gradienttransform='' gradientunits='' kernelmatrix='' kernelunitlength='' keypoints='' keysplines='' keytimes='' lengthadjust='' limitingconeangle='' markerheight='' markerunits='' markerwidth='' maskcontentunits='' maskunits='' numoctaves='' pathlength='' patterncontentunits='' patterntransform='' patternunits='' pointsatx='' pointsaty='' pointsatz='' preservealpha='' preserveaspectratio='' primitiveunits='' refx='' refy='' repeatcount='' repeatdur='' requiredextensions='' requiredfeatures='' specularconstant='' specularexponent='' spreadmethod='' startoffset='' stddeviation='' stitchtiles='' surfacescale='' systemlanguage='' tablevalues='' targetx='' targety='' textlength='' viewbox='' viewtarget='' xchannelselector='' ychannelselector='' zoomandpan=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       attributeName=""
+|       attributeType=""
+|       baseFrequency=""
+|       baseProfile=""
+|       calcMode=""
+|       clipPathUnits=""
+|       contentscripttype=""
+|       contentstyletype=""
+|       diffuseConstant=""
+|       edgeMode=""
+|       externalresourcesrequired=""
+|       filterUnits=""
+|       filterres=""
+|       glyphRef=""
+|       gradientTransform=""
+|       gradientUnits=""
+|       kernelMatrix=""
+|       kernelUnitLength=""
+|       keyPoints=""
+|       keySplines=""
+|       keyTimes=""
+|       lengthAdjust=""
+|       limitingConeAngle=""
+|       markerHeight=""
+|       markerUnits=""
+|       markerWidth=""
+|       maskContentUnits=""
+|       maskUnits=""
+|       numOctaves=""
+|       pathLength=""
+|       patternContentUnits=""
+|       patternTransform=""
+|       patternUnits=""
+|       pointsAtX=""
+|       pointsAtY=""
+|       pointsAtZ=""
+|       preserveAlpha=""
+|       preserveAspectRatio=""
+|       primitiveUnits=""
+|       refX=""
+|       refY=""
+|       repeatCount=""
+|       repeatDur=""
+|       requiredExtensions=""
+|       requiredFeatures=""
+|       specularConstant=""
+|       specularExponent=""
+|       spreadMethod=""
+|       startOffset=""
+|       stdDeviation=""
+|       stitchTiles=""
+|       surfaceScale=""
+|       systemLanguage=""
+|       tableValues=""
+|       targetX=""
+|       targetY=""
+|       textLength=""
+|       viewBox=""
+|       viewTarget=""
+|       xChannelSelector=""
+|       yChannelSelector=""
+|       zoomAndPan=""
+
+#data
+<!DOCTYPE html><body><math attributeName='' attributeType='' baseFrequency='' baseProfile='' calcMode='' clipPathUnits='' contentScriptType='' contentStyleType='' diffuseConstant='' edgeMode='' externalResourcesRequired='' filterRes='' filterUnits='' glyphRef='' gradientTransform='' gradientUnits='' kernelMatrix='' kernelUnitLength='' keyPoints='' keySplines='' keyTimes='' lengthAdjust='' limitingConeAngle='' markerHeight='' markerUnits='' markerWidth='' maskContentUnits='' maskUnits='' numOctaves='' pathLength='' patternContentUnits='' patternTransform='' patternUnits='' pointsAtX='' pointsAtY='' pointsAtZ='' preserveAlpha='' preserveAspectRatio='' primitiveUnits='' refX='' refY='' repeatCount='' repeatDur='' requiredExtensions='' requiredFeatures='' specularConstant='' specularExponent='' spreadMethod='' startOffset='' stdDeviation='' stitchTiles='' surfaceScale='' systemLanguage='' tableValues='' targetX='' targetY='' textLength='' viewBox='' viewTarget='' xChannelSelector='' yChannelSelector='' zoomAndPan=''></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       attributename=""
+|       attributetype=""
+|       basefrequency=""
+|       baseprofile=""
+|       calcmode=""
+|       clippathunits=""
+|       contentscripttype=""
+|       contentstyletype=""
+|       diffuseconstant=""
+|       edgemode=""
+|       externalresourcesrequired=""
+|       filterres=""
+|       filterunits=""
+|       glyphref=""
+|       gradienttransform=""
+|       gradientunits=""
+|       kernelmatrix=""
+|       kernelunitlength=""
+|       keypoints=""
+|       keysplines=""
+|       keytimes=""
+|       lengthadjust=""
+|       limitingconeangle=""
+|       markerheight=""
+|       markerunits=""
+|       markerwidth=""
+|       maskcontentunits=""
+|       maskunits=""
+|       numoctaves=""
+|       pathlength=""
+|       patterncontentunits=""
+|       patterntransform=""
+|       patternunits=""
+|       pointsatx=""
+|       pointsaty=""
+|       pointsatz=""
+|       preservealpha=""
+|       preserveaspectratio=""
+|       primitiveunits=""
+|       refx=""
+|       refy=""
+|       repeatcount=""
+|       repeatdur=""
+|       requiredextensions=""
+|       requiredfeatures=""
+|       specularconstant=""
+|       specularexponent=""
+|       spreadmethod=""
+|       startoffset=""
+|       stddeviation=""
+|       stitchtiles=""
+|       surfacescale=""
+|       systemlanguage=""
+|       tablevalues=""
+|       targetx=""
+|       targety=""
+|       textlength=""
+|       viewbox=""
+|       viewtarget=""
+|       xchannelselector=""
+|       ychannelselector=""
+|       zoomandpan=""
+
+#data
+<!DOCTYPE html><body><svg><altGlyph /><altGlyphDef /><altGlyphItem /><animateColor /><animateMotion /><animateTransform /><clipPath /><feBlend /><feColorMatrix /><feComponentTransfer /><feComposite /><feConvolveMatrix /><feDiffuseLighting /><feDisplacementMap /><feDistantLight /><feFlood /><feFuncA /><feFuncB /><feFuncG /><feFuncR /><feGaussianBlur /><feImage /><feMerge /><feMergeNode /><feMorphology /><feOffset /><fePointLight /><feSpecularLighting /><feSpotLight /><feTile /><feTurbulence /><foreignObject /><glyphRef /><linearGradient /><radialGradient /><textPath /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg altGlyph>
+|       <svg altGlyphDef>
+|       <svg altGlyphItem>
+|       <svg animateColor>
+|       <svg animateMotion>
+|       <svg animateTransform>
+|       <svg clipPath>
+|       <svg feBlend>
+|       <svg feColorMatrix>
+|       <svg feComponentTransfer>
+|       <svg feComposite>
+|       <svg feConvolveMatrix>
+|       <svg feDiffuseLighting>
+|       <svg feDisplacementMap>
+|       <svg feDistantLight>
+|       <svg feFlood>
+|       <svg feFuncA>
+|       <svg feFuncB>
+|       <svg feFuncG>
+|       <svg feFuncR>
+|       <svg feGaussianBlur>
+|       <svg feImage>
+|       <svg feMerge>
+|       <svg feMergeNode>
+|       <svg feMorphology>
+|       <svg feOffset>
+|       <svg fePointLight>
+|       <svg feSpecularLighting>
+|       <svg feSpotLight>
+|       <svg feTile>
+|       <svg feTurbulence>
+|       <svg foreignObject>
+|       <svg glyphRef>
+|       <svg linearGradient>
+|       <svg radialGradient>
+|       <svg textPath>
+
+#data
+<!DOCTYPE html><body><svg><altglyph /><altglyphdef /><altglyphitem /><animatecolor /><animatemotion /><animatetransform /><clippath /><feblend /><fecolormatrix /><fecomponenttransfer /><fecomposite /><feconvolvematrix /><fediffuselighting /><fedisplacementmap /><fedistantlight /><feflood /><fefunca /><fefuncb /><fefuncg /><fefuncr /><fegaussianblur /><feimage /><femerge /><femergenode /><femorphology /><feoffset /><fepointlight /><fespecularlighting /><fespotlight /><fetile /><feturbulence /><foreignobject /><glyphref /><lineargradient /><radialgradient /><textpath /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg altGlyph>
+|       <svg altGlyphDef>
+|       <svg altGlyphItem>
+|       <svg animateColor>
+|       <svg animateMotion>
+|       <svg animateTransform>
+|       <svg clipPath>
+|       <svg feBlend>
+|       <svg feColorMatrix>
+|       <svg feComponentTransfer>
+|       <svg feComposite>
+|       <svg feConvolveMatrix>
+|       <svg feDiffuseLighting>
+|       <svg feDisplacementMap>
+|       <svg feDistantLight>
+|       <svg feFlood>
+|       <svg feFuncA>
+|       <svg feFuncB>
+|       <svg feFuncG>
+|       <svg feFuncR>
+|       <svg feGaussianBlur>
+|       <svg feImage>
+|       <svg feMerge>
+|       <svg feMergeNode>
+|       <svg feMorphology>
+|       <svg feOffset>
+|       <svg fePointLight>
+|       <svg feSpecularLighting>
+|       <svg feSpotLight>
+|       <svg feTile>
+|       <svg feTurbulence>
+|       <svg foreignObject>
+|       <svg glyphRef>
+|       <svg linearGradient>
+|       <svg radialGradient>
+|       <svg textPath>
+
+#data
+<!DOCTYPE html><BODY><SVG><ALTGLYPH /><ALTGLYPHDEF /><ALTGLYPHITEM /><ANIMATECOLOR /><ANIMATEMOTION /><ANIMATETRANSFORM /><CLIPPATH /><FEBLEND /><FECOLORMATRIX /><FECOMPONENTTRANSFER /><FECOMPOSITE /><FECONVOLVEMATRIX /><FEDIFFUSELIGHTING /><FEDISPLACEMENTMAP /><FEDISTANTLIGHT /><FEFLOOD /><FEFUNCA /><FEFUNCB /><FEFUNCG /><FEFUNCR /><FEGAUSSIANBLUR /><FEIMAGE /><FEMERGE /><FEMERGENODE /><FEMORPHOLOGY /><FEOFFSET /><FEPOINTLIGHT /><FESPECULARLIGHTING /><FESPOTLIGHT /><FETILE /><FETURBULENCE /><FOREIGNOBJECT /><GLYPHREF /><LINEARGRADIENT /><RADIALGRADIENT /><TEXTPATH /></SVG>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg altGlyph>
+|       <svg altGlyphDef>
+|       <svg altGlyphItem>
+|       <svg animateColor>
+|       <svg animateMotion>
+|       <svg animateTransform>
+|       <svg clipPath>
+|       <svg feBlend>
+|       <svg feColorMatrix>
+|       <svg feComponentTransfer>
+|       <svg feComposite>
+|       <svg feConvolveMatrix>
+|       <svg feDiffuseLighting>
+|       <svg feDisplacementMap>
+|       <svg feDistantLight>
+|       <svg feFlood>
+|       <svg feFuncA>
+|       <svg feFuncB>
+|       <svg feFuncG>
+|       <svg feFuncR>
+|       <svg feGaussianBlur>
+|       <svg feImage>
+|       <svg feMerge>
+|       <svg feMergeNode>
+|       <svg feMorphology>
+|       <svg feOffset>
+|       <svg fePointLight>
+|       <svg feSpecularLighting>
+|       <svg feSpotLight>
+|       <svg feTile>
+|       <svg feTurbulence>
+|       <svg foreignObject>
+|       <svg glyphRef>
+|       <svg linearGradient>
+|       <svg radialGradient>
+|       <svg textPath>
+
+#data
+<!DOCTYPE html><body><math><altGlyph /><altGlyphDef /><altGlyphItem /><animateColor /><animateMotion /><animateTransform /><clipPath /><feBlend /><feColorMatrix /><feComponentTransfer /><feComposite /><feConvolveMatrix /><feDiffuseLighting /><feDisplacementMap /><feDistantLight /><feFlood /><feFuncA /><feFuncB /><feFuncG /><feFuncR /><feGaussianBlur /><feImage /><feMerge /><feMergeNode /><feMorphology /><feOffset /><fePointLight /><feSpecularLighting /><feSpotLight /><feTile /><feTurbulence /><foreignObject /><glyphRef /><linearGradient /><radialGradient /><textPath /></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math altglyph>
+|       <math altglyphdef>
+|       <math altglyphitem>
+|       <math animatecolor>
+|       <math animatemotion>
+|       <math animatetransform>
+|       <math clippath>
+|       <math feblend>
+|       <math fecolormatrix>
+|       <math fecomponenttransfer>
+|       <math fecomposite>
+|       <math feconvolvematrix>
+|       <math fediffuselighting>
+|       <math fedisplacementmap>
+|       <math fedistantlight>
+|       <math feflood>
+|       <math fefunca>
+|       <math fefuncb>
+|       <math fefuncg>
+|       <math fefuncr>
+|       <math fegaussianblur>
+|       <math feimage>
+|       <math femerge>
+|       <math femergenode>
+|       <math femorphology>
+|       <math feoffset>
+|       <math fepointlight>
+|       <math fespecularlighting>
+|       <math fespotlight>
+|       <math fetile>
+|       <math feturbulence>
+|       <math foreignobject>
+|       <math glyphref>
+|       <math lineargradient>
+|       <math radialgradient>
+|       <math textpath>
+
+#data
+<!DOCTYPE html><body><svg><solidColor /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg solidcolor>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests12.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests12.dat
new file mode 100644
index 0000000000..63107d277b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests12.dat
@@ -0,0 +1,62 @@
+#data
+<!DOCTYPE html><body><p>foo<math><mtext><i>baz</i></mtext><annotation-xml><svg><desc><b>eggs</b></desc><g><foreignObject><P>spam<TABLE><tr><td><img></td></table></foreignObject></g><g>quux</g></svg></annotation-xml></math>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "foo"
+|       <math math>
+|         <math mtext>
+|           <i>
+|             "baz"
+|         <math annotation-xml>
+|           <svg svg>
+|             <svg desc>
+|               <b>
+|                 "eggs"
+|             <svg g>
+|               <svg foreignObject>
+|                 <p>
+|                   "spam"
+|                 <table>
+|                   <tbody>
+|                     <tr>
+|                       <td>
+|                         <img>
+|             <svg g>
+|               "quux"
+|       "bar"
+
+#data
+<!DOCTYPE html><body>foo<math><mtext><i>baz</i></mtext><annotation-xml><svg><desc><b>eggs</b></desc><g><foreignObject><P>spam<TABLE><tr><td><img></td></table></foreignObject></g><g>quux</g></svg></annotation-xml></math>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "foo"
+|     <math math>
+|       <math mtext>
+|         <i>
+|           "baz"
+|       <math annotation-xml>
+|         <svg svg>
+|           <svg desc>
+|             <b>
+|               "eggs"
+|           <svg g>
+|             <svg foreignObject>
+|               <p>
+|                 "spam"
+|               <table>
+|                 <tbody>
+|                   <tr>
+|                     <td>
+|                       <img>
+|           <svg g>
+|             "quux"
+|     "bar"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests14.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests14.dat
new file mode 100644
index 0000000000..a08b7649eb
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests14.dat
@@ -0,0 +1,75 @@
+#data
+<!DOCTYPE html><html><body><xyz:abc></xyz:abc>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <xyz:abc>
+
+#data
+<!DOCTYPE html><html><body><xyz:abc></xyz:abc><span></span>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <xyz:abc>
+|     <span>
+
+#data
+<!DOCTYPE html><html><html abc:def=gh><xyz:abc></xyz:abc>
+#errors
+(1,38): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   abc:def="gh"
+|   <head>
+|   <body>
+|     <xyz:abc>
+
+#data
+<!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
+#errors
+(1,53): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   xml:lang="bar"
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><html 123=456>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   123="456"
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><html 123=456><html 789=012>
+#errors
+(1,43): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   123="456"
+|   789="012"
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><html><body 789=012>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     789="012"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests15.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests15.dat
new file mode 100644
index 0000000000..93d06a8717
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests15.dat
@@ -0,0 +1,216 @@
+#data
+<!DOCTYPE html><p><b><i><u></p> <p>X
+#errors
+(1,31): unexpected-end-tag
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|         <i>
+|           <u>
+|     <b>
+|       <i>
+|         <u>
+|           " "
+|           <p>
+|             "X"
+
+#data
+<p><b><i><u></p>
+<p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): unexpected-end-tag
+(2,4): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|         <i>
+|           <u>
+|     <b>
+|       <i>
+|         <u>
+|           "
+"
+|           <p>
+|             "X"
+
+#data
+<!doctype html></html> <head>
+#errors
+(1,29): expected-eof-but-got-start-tag
+(1,29): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " "
+
+#data
+<!doctype html></body><meta>
+#errors
+(1,28): unexpected-start-tag-after-body
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <meta>
+
+#data
+<html></html><!-- foo -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+| <!--  foo  -->
+
+#data
+<!doctype html></body><title>X</title>
+#errors
+(1,29): unexpected-start-tag-after-body
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <title>
+|       "X"
+
+#data
+<!doctype html><table> X<meta></table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,30): foster-parenting-start-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " X"
+|     <meta>
+|     <table>
+
+#data
+<!doctype html><table> x</table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " x"
+|     <table>
+
+#data
+<!doctype html><table> x </table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " x "
+|     <table>
+
+#data
+<!doctype html><table><tr> x</table>
+#errors
+(1,27): foster-parenting-character
+(1,28): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " x"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><table>X<style> <tr>x </style> </table>
+#errors
+(1,23): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+|     <table>
+|       <style>
+|         " <tr>x "
+|       " "
+
+#data
+<!doctype html><div><table><a>foo</a> <tr><td>bar</td> </tr></table></div>
+#errors
+(1,30): foster-parenting-start-tag
+(1,31): foster-parenting-character
+(1,32): foster-parenting-character
+(1,33): foster-parenting-character
+(1,37): foster-parenting-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <a>
+|         "foo"
+|       <table>
+|         " "
+|         <tbody>
+|           <tr>
+|             <td>
+|               "bar"
+|             " "
+
+#data
+<frame></frame></frame><frameset><frame><frameset><frame></frameset><noframes></frameset><noframes>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,7): unexpected-start-tag-ignored
+(1,15): unexpected-end-tag
+(1,23): unexpected-end-tag
+(1,33): unexpected-start-tag
+(1,99): expected-named-closing-tag-but-got-eof
+(1,99): eof-in-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+|     <frameset>
+|       <frame>
+|     <noframes>
+|       "</frameset><noframes>"
+
+#data
+<!DOCTYPE html><object></html>
+#errors
+(1,30): expected-body-in-scope
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <object>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests16.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests16.dat
new file mode 100644
index 0000000000..1c57f14a32
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests16.dat
@@ -0,0 +1,2396 @@
+#data
+<!doctype html><script>
+#errors
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<!doctype html><script>a
+#errors
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "a"
+|   <body>
+
+#data
+<!doctype html><script><
+#errors
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<"
+|   <body>
+
+#data
+<!doctype html><script></
+#errors
+(1,25): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</"
+|   <body>
+
+#data
+<!doctype html><script></S
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</S"
+|   <body>
+
+#data
+<!doctype html><script></SC
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</SC"
+|   <body>
+
+#data
+<!doctype html><script></SCR
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</SCR"
+|   <body>
+
+#data
+<!doctype html><script></SCRI
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</SCRI"
+|   <body>
+
+#data
+<!doctype html><script></SCRIP
+#errors
+(1,30): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</SCRIP"
+|   <body>
+
+#data
+<!doctype html><script></SCRIPT
+#errors
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</SCRIPT"
+|   <body>
+
+#data
+<!doctype html><script></SCRIPT 
+#errors
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<!doctype html><script></s
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</s"
+|   <body>
+
+#data
+<!doctype html><script></sc
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</sc"
+|   <body>
+
+#data
+<!doctype html><script></scr
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</scr"
+|   <body>
+
+#data
+<!doctype html><script></scri
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</scri"
+|   <body>
+
+#data
+<!doctype html><script></scrip
+#errors
+(1,30): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</scrip"
+|   <body>
+
+#data
+<!doctype html><script></script
+#errors
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "</script"
+|   <body>
+
+#data
+<!doctype html><script></script 
+#errors
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<!doctype html><script><!
+#errors
+(1,25): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!"
+|   <body>
+
+#data
+<!doctype html><script><!a
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!a"
+|   <body>
+
+#data
+<!doctype html><script><!-
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!-"
+|   <body>
+
+#data
+<!doctype html><script><!-a
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!-a"
+|   <body>
+
+#data
+<!doctype html><script><!--
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+(1,27): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--"
+|   <body>
+
+#data
+<!doctype html><script><!--a
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+(1,28): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--a"
+|   <body>
+
+#data
+<!doctype html><script><!--<
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+(1,28): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<"
+|   <body>
+
+#data
+<!doctype html><script><!--<a
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<a"
+|   <body>
+
+#data
+<!doctype html><script><!--</
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--</"
+|   <body>
+
+#data
+<!doctype html><script><!--</script
+#errors
+(1,35): expected-named-closing-tag-but-got-eof
+(1,35): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--</script"
+|   <body>
+
+#data
+<!doctype html><script><!--</script 
+#errors
+(1,36): expected-attribute-name-but-got-eof
+(1,36): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--"
+|   <body>
+
+#data
+<!doctype html><script><!--<s
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<s"
+|   <body>
+
+#data
+<!doctype html><script><!--<script
+#errors
+(1,34): expected-named-closing-tag-but-got-eof
+(1,34): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script"
+|   <body>
+
+#data
+<!doctype html><script><!--<script 
+#errors
+(1,35): eof-in-script-in-script
+(1,35): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script "
+|   <body>
+
+#data
+<!doctype html><script><!--<script <
+#errors
+(1,36): eof-in-script-in-script
+(1,36): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script <"
+|   <body>
+
+#data
+<!doctype html><script><!--<script <a
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script <a"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </s
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </s"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script
+#errors
+(1,43): eof-in-script-in-script
+(1,43): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </scripta
+#errors
+(1,44): eof-in-script-in-script
+(1,44): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </scripta"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script 
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script>
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script>"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script/
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script/"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script <
+#errors
+(1,45): expected-named-closing-tag-but-got-eof
+(1,45): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script <"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script <a
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+(1,46): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script <a"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script </
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+(1,46): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script </"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script </script
+#errors
+(1,52): expected-named-closing-tag-but-got-eof
+(1,52): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script </script"
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script </script 
+#errors
+(1,53): expected-attribute-name-but-got-eof
+(1,53): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script </script/
+#errors
+(1,53): unexpected-EOF-after-solidus-in-tag
+(1,53): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<!doctype html><script><!--<script </script </script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<!doctype html><script><!--<script -
+#errors
+(1,36): eof-in-script-in-script
+(1,36): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -"
+|   <body>
+
+#data
+<!doctype html><script><!--<script -a
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -a"
+|   <body>
+
+#data
+<!doctype html><script><!--<script -<
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -<"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --a
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --a"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --<
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --<"
+|   <body>
+
+#data
+<!doctype html><script><!--<script -->
+#errors
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --><
+#errors
+(1,39): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --><"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --></
+#errors
+(1,40): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --></"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --></script
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --></script"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --></script 
+#errors
+(1,47): expected-attribute-name-but-got-eof
+(1,47): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --></script/
+#errors
+(1,47): unexpected-EOF-after-solidus-in-tag
+(1,47): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script --></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script><\/script>--></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script><\/script>-->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></scr'+'ipt>--></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></scr'+'ipt>-->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>--><!--</script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>--><!--"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>-- ></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>-- >"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>- -></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>- ->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>- - ></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>- - >"
+|   <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>-></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>->"
+|   <body>
+
+#data
+<!doctype html><script><!--<script>--!></script>X
+#errors
+(1,49): expected-named-closing-tag-but-got-eof
+(1,49): unexpected-EOF-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script>--!></script>X"
+|   <body>
+
+#data
+<!doctype html><script><!--<scr'+'ipt></script>--></script>
+#errors
+(1,59): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<scr'+'ipt>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><script><!--<script></scr'+'ipt></script>X
+#errors
+(1,57): expected-named-closing-tag-but-got-eof
+(1,57): unexpected-eof-in-text-mode
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></scr'+'ipt></script>X"
+|   <body>
+
+#data
+<!doctype html><style><!--<style></style>--></style>
+#errors
+(1,52): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--<style>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><style><!--</style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--"
+|   <body>
+|     "X"
+
+#data
+<!doctype html><style><!--...</style>...--></style>
+#errors
+(1,51): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--..."
+|   <body>
+|     "...-->"
+
+#data
+<!doctype html><style><!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style></style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style>"
+|   <body>
+|     "X"
+
+#data
+<!doctype html><style><!--...<style><!--...--!></style>--></style>
+#errors
+(1,66): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--...<style><!--...--!>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><style><!--...</style><!-- --><style>@import ...</style>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "<!--..."
+|     <!--   -->
+|     <style>
+|       "@import ..."
+|   <body>
+
+#data
+<!doctype html><style>...<style><!--...</style><!-- --></style>
+#errors
+(1,63): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "...<style><!--..."
+|     <!--   -->
+|   <body>
+
+#data
+<!doctype html><style>...<!--[if IE]><style>...</style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "...<!--[if IE]><style>..."
+|   <body>
+|     "X"
+
+#data
+<!doctype html><title><!--<title></title>--></title>
+#errors
+(1,52): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "<!--<title>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><title>&lt;/title></title>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "</title>"
+|   <body>
+
+#data
+<!doctype html><title>foo/title><link></head><body>X
+#errors
+(1,52): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "foo/title><link></head><body>X"
+|   <body>
+
+#data
+<!doctype html><noscript><!--<noscript></noscript>--></noscript>
+#errors
+(1,64): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <noscript>
+|       "<!--<noscript>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <noscript>
+|       "<!--"
+|   <body>
+|     "X"
+|     <noscript>
+|       "-->"
+
+#data
+<!doctype html><noscript><iframe></noscript>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <noscript>
+|       "<iframe>"
+|   <body>
+|     "X"
+
+#data
+<!doctype html><noframes><!--<noframes></noframes>--></noframes>
+#errors
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+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <noframes>
+|       "<!--<noframes>"
+|   <body>
+|     "-->"
+
+#data
+<!doctype html><noframes><body><script><!--...</script></body></noframes></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <noframes>
+|       "<body><script><!--...</script></body>"
+|   <body>
+
+#data
+<!doctype html><textarea><!--<textarea></textarea>--></textarea>
+#errors
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+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<!--<textarea>"
+|     "-->"
+
+#data
+<!doctype html><textarea>&lt;/textarea></textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "</textarea>"
+
+#data
+<!doctype html><textarea>&lt;</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<"
+
+#data
+<!doctype html><textarea>a&lt;b</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "a<b"
+
+#data
+<!doctype html><iframe><!--<iframe></iframe>--></iframe>
+#errors
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+#document
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+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       "<!--<iframe>"
+|     "-->"
+
+#data
+<!doctype html><iframe>...<!--X->...<!--/X->...</iframe>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       "...<!--X->...<!--/X->..."
+
+#data
+<!doctype html><xmp><!--<xmp></xmp>--></xmp>
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+#document
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+| <html>
+|   <head>
+|   <body>
+|     <xmp>
+|       "<!--<xmp>"
+|     "-->"
+
+#data
+<!doctype html><style></style</style>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "</style"
+|   <body>
+
+#data
+<!doctype html><style></stylee</style>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <style>
+|       "</stylee"
+|   <body>
+
+#data
+<!doctype html><noembed><!--<noembed></noembed>--></noembed>
+#errors
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+#document
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+| <html>
+|   <head>
+|   <body>
+|     <noembed>
+|       "<!--<noembed>"
+|     "-->"
+
+#data
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+
+#data
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+|     <script>
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+|   <body>
+
+#data
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+|     <script>
+|       "<"
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+
+#data
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+|     <script>
+|       "</"
+|   <body>
+
+#data
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+|   <head>
+|     <script>
+|       "</S"
+|   <body>
+
+#data
+<script></SC
+#errors
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+#document
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+|   <head>
+|     <script>
+|       "</SC"
+|   <body>
+
+#data
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+|   <head>
+|     <script>
+|       "</SCR"
+|   <body>
+
+#data
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+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</SCRI"
+|   <body>
+
+#data
+<script></SCRIP
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</SCRIP"
+|   <body>
+
+#data
+<script></SCRIPT
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</SCRIPT"
+|   <body>
+
+#data
+<script></SCRIPT 
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+#document
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<script></s
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+#document
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+|   <head>
+|     <script>
+|       "</s"
+|   <body>
+
+#data
+<script></sc
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</sc"
+|   <body>
+
+#data
+<script></scr
+#errors
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+(1,13): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "</scr"
+|   <body>
+
+#data
+<script></scri
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</scri"
+|   <body>
+
+#data
+<script></scrip
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</scrip"
+|   <body>
+
+#data
+<script></script
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "</script"
+|   <body>
+
+#data
+<script></script 
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+#document
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<script><!
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!"
+|   <body>
+
+#data
+<script><!a
+#errors
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+| <html>
+|   <head>
+|     <script>
+|       "<!a"
+|   <body>
+
+#data
+<script><!-
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+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!-"
+|   <body>
+
+#data
+<script><!-a
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!-a"
+|   <body>
+
+#data
+<script><!--
+#errors
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+(1,12): expected-named-closing-tag-but-got-eof
+(1,12): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--"
+|   <body>
+
+#data
+<script><!--a
+#errors
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+(1,13): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--a"
+|   <body>
+
+#data
+<script><!--<
+#errors
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<"
+|   <body>
+
+#data
+<script><!--<a
+#errors
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+(1,14): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<a"
+|   <body>
+
+#data
+<script><!--</
+#errors
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+(1,14): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--</"
+|   <body>
+
+#data
+<script><!--</script
+#errors
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+(1,20): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--</script"
+|   <body>
+
+#data
+<script><!--</script 
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+(1,21): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--"
+|   <body>
+
+#data
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+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<s"
+|   <body>
+
+#data
+<script><!--<script
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+(1,19): expected-named-closing-tag-but-got-eof
+(1,19): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script"
+|   <body>
+
+#data
+<script><!--<script 
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+(1,20): eof-in-script-in-script
+(1,20): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script "
+|   <body>
+
+#data
+<script><!--<script <
+#errors
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+(1,21): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script <"
+|   <body>
+
+#data
+<script><!--<script <a
+#errors
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+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script <a"
+|   <body>
+
+#data
+<script><!--<script </
+#errors
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+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </"
+|   <body>
+
+#data
+<script><!--<script </s
+#errors
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+(1,23): eof-in-script-in-script
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </s"
+|   <body>
+
+#data
+<script><!--<script </script
+#errors
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+(1,28): eof-in-script-in-script
+(1,28): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script"
+|   <body>
+
+#data
+<script><!--<script </scripta
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+(1,29): eof-in-script-in-script
+(1,29): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </scripta"
+|   <body>
+
+#data
+<script><!--<script </script 
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+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<script><!--<script </script>
+#errors
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+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script>"
+|   <body>
+
+#data
+<script><!--<script </script/
+#errors
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+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script/"
+|   <body>
+
+#data
+<script><!--<script </script <
+#errors
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+(1,30): expected-named-closing-tag-but-got-eof
+(1,30): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script <"
+|   <body>
+
+#data
+<script><!--<script </script <a
+#errors
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+(1,31): expected-named-closing-tag-but-got-eof
+(1,31): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script <a"
+|   <body>
+
+#data
+<script><!--<script </script </
+#errors
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+(1,31): expected-named-closing-tag-but-got-eof
+(1,31): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script </"
+|   <body>
+
+#data
+<script><!--<script </script </script
+#errors
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+(1,37): expected-named-closing-tag-but-got-eof
+(1,37): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script </script"
+|   <body>
+
+#data
+<script><!--<script </script </script 
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+(1,38): expected-attribute-name-but-got-eof
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<script><!--<script </script </script/
+#errors
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+(1,38): unexpected-EOF-after-solidus-in-tag
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<script><!--<script </script </script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script </script "
+|   <body>
+
+#data
+<script><!--<script -
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+(1,21): eof-in-script-in-script
+(1,21): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -"
+|   <body>
+
+#data
+<script><!--<script -a
+#errors
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+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -a"
+|   <body>
+
+#data
+<script><!--<script --
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --"
+|   <body>
+
+#data
+<script><!--<script --a
+#errors
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+(1,23): eof-in-script-in-script
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --a"
+|   <body>
+
+#data
+<script><!--<script -->
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<script><!--<script --><
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --><"
+|   <body>
+
+#data
+<script><!--<script --></
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,25): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --></"
+|   <body>
+
+#data
+<script><!--<script --></script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script --></script"
+|   <body>
+
+#data
+<script><!--<script --></script 
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<script><!--<script --></script/
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,32): unexpected-EOF-after-solidus-in-tag
+(1,32): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<script><!--<script --></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script -->"
+|   <body>
+
+#data
+<script><!--<script><\/script>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script><\/script>-->"
+|   <body>
+
+#data
+<script><!--<script></scr'+'ipt>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></scr'+'ipt>-->"
+|   <body>
+
+#data
+<script><!--<script></script><script></script></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>"
+|   <body>
+
+#data
+<script><!--<script></script><script></script>--><!--</script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>--><!--"
+|   <body>
+
+#data
+<script><!--<script></script><script></script>-- ></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>-- >"
+|   <body>
+
+#data
+<script><!--<script></script><script></script>- -></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>- ->"
+|   <body>
+
+#data
+<script><!--<script></script><script></script>- - ></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>- - >"
+|   <body>
+
+#data
+<script><!--<script></script><script></script>-></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></script><script></script>->"
+|   <body>
+
+#data
+<script><!--<script>--!></script>X
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,34): expected-named-closing-tag-but-got-eof
+(1,34): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script>--!></script>X"
+|   <body>
+
+#data
+<script><!--<scr'+'ipt></script>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,44): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<scr'+'ipt>"
+|   <body>
+|     "-->"
+
+#data
+<script><!--<script></scr'+'ipt></script>X
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,42): expected-named-closing-tag-but-got-eof
+(1,42): unexpected-eof-in-text-mode
+#document
+| <html>
+|   <head>
+|     <script>
+|       "<!--<script></scr'+'ipt></script>X"
+|   <body>
+
+#data
+<style><!--<style></style>--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--<style>"
+|   <body>
+|     "-->"
+
+#data
+<style><!--</style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--"
+|   <body>
+|     "X"
+
+#data
+<style><!--...</style>...--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,36): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--..."
+|   <body>
+|     "...-->"
+
+#data
+<style><!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style></style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style>"
+|   <body>
+|     "X"
+
+#data
+<style><!--...<style><!--...--!></style>--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,51): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--...<style><!--...--!>"
+|   <body>
+|     "-->"
+
+#data
+<style><!--...</style><!-- --><style>@import ...</style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "<!--..."
+|     <!--   -->
+|     <style>
+|       "@import ..."
+|   <body>
+
+#data
+<style>...<style><!--...</style><!-- --></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,48): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "...<style><!--..."
+|     <!--   -->
+|   <body>
+
+#data
+<style>...<!--[if IE]><style>...</style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       "...<!--[if IE]><style>..."
+|   <body>
+|     "X"
+
+#data
+<title><!--<title></title>--></title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "<!--<title>"
+|   <body>
+|     "-->"
+
+#data
+<title>&lt;/title></title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "</title>"
+|   <body>
+
+#data
+<title>foo/title><link></head><body>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <title>
+|       "foo/title><link></head><body>X"
+|   <body>
+
+#data
+<noscript><!--<noscript></noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <noscript>
+|       "<!--<noscript>"
+|   <body>
+|     "-->"
+
+#data
+<noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <noscript>
+|       "<!--"
+|   <body>
+|     "X"
+|     <noscript>
+|       "-->"
+
+#data
+<noscript><iframe></noscript>X
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <noscript>
+|       "<iframe>"
+|   <body>
+|     "X"
+
+#data
+<noframes><!--<noframes></noframes>--></noframes>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <noframes>
+|       "<!--<noframes>"
+|   <body>
+|     "-->"
+
+#data
+<noframes><body><script><!--...</script></body></noframes></html>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <noframes>
+|       "<body><script><!--...</script></body>"
+|   <body>
+
+#data
+<textarea><!--<textarea></textarea>--></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "<!--<textarea>"
+|     "-->"
+
+#data
+<textarea>&lt;/textarea></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "</textarea>"
+
+#data
+<iframe><!--<iframe></iframe>--></iframe>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,41): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       "<!--<iframe>"
+|     "-->"
+
+#data
+<iframe>...<!--X->...<!--/X->...</iframe>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       "...<!--X->...<!--/X->..."
+
+#data
+<xmp><!--<xmp></xmp>--></xmp>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,29): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <xmp>
+|       "<!--<xmp>"
+|     "-->"
+
+#data
+<noembed><!--<noembed></noembed>--></noembed>
+#errors
+(1,9): expected-doctype-but-got-start-tag
+(1,45): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <noembed>
+|       "<!--<noembed>"
+|     "-->"
+
+#data
+<!doctype html><table>
+
+#errors
+(2,0): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       "
+"
+
+#data
+<!doctype html><table><td><span><font></span><span>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,45): unexpected-end-tag
+(1,51): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <span>
+|               <font>
+|             <font>
+|               <span>
+
+#data
+<!doctype html><form><table></form><form></table></form>
+#errors
+(1,35): unexpected-end-tag-implies-table-voodoo
+(1,35): unexpected-end-tag
+(1,41): unexpected-form-in-table
+(1,56): unexpected-end-tag
+(1,56): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <table>
+|         <form>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests17.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests17.dat
new file mode 100644
index 0000000000..37a7be4187
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests17.dat
@@ -0,0 +1,180 @@
+#data
+<!doctype html><table><tbody><select><tr>
+#errors
+(1,37): unexpected-start-tag-implies-table-voodoo
+(1,41): unexpected-table-element-start-tag-in-select-in-table
+(1,41): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><table><tr><select><td>
+#errors
+(1,34): unexpected-start-tag-implies-table-voodoo
+(1,38): unexpected-table-element-start-tag-in-select-in-table
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<!doctype html><table><tr><td><select><td>
+#errors
+(1,42): unexpected-table-element-start-tag-in-select-in-table
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <select>
+|           <td>
+
+#data
+<!doctype html><table><tr><th><select><td>
+#errors
+(1,42): unexpected-table-element-start-tag-in-select-in-table
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <th>
+|             <select>
+|           <td>
+
+#data
+<!doctype html><table><caption><select><tr>
+#errors
+(1,43): unexpected-table-element-start-tag-in-select-in-table
+(1,43): XXX-undefined-error
+(1,43): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <select>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><select><tr>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><td>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><th>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><tbody>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><thead>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><tfoot>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><select><caption>
+#errors
+(1,32): unexpected-start-tag-in-select
+(1,32): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><table><tr></table>a
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|     "a"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests18.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests18.dat
new file mode 100644
index 0000000000..926bccb387
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests18.dat
@@ -0,0 +1,322 @@
+#data
+<!doctype html><plaintext></plaintext>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "</plaintext>"
+
+#data
+<!doctype html><table><plaintext></plaintext>
+#errors
+(1,33): foster-parenting-start-tag
+(1,34): foster-parenting-character
+(1,35): foster-parenting-character
+(1,36): foster-parenting-character
+(1,37): foster-parenting-character
+(1,38): foster-parenting-character
+(1,39): foster-parenting-character
+(1,40): foster-parenting-character
+(1,41): foster-parenting-character
+(1,42): foster-parenting-character
+(1,43): foster-parenting-character
+(1,44): foster-parenting-character
+(1,45): foster-parenting-character
+(1,45): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "</plaintext>"
+|     <table>
+
+#data
+<!doctype html><table><tbody><plaintext></plaintext>
+#errors
+(1,40): foster-parenting-start-tag
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,41): foster-parenting-character
+(1,52): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "</plaintext>"
+|     <table>
+|       <tbody>
+
+#data
+<!doctype html><table><tbody><tr><plaintext></plaintext>
+#errors
+(1,44): foster-parenting-start-tag
+(1,45): foster-parenting-character
+(1,46): foster-parenting-character
+(1,47): foster-parenting-character
+(1,48): foster-parenting-character
+(1,49): foster-parenting-character
+(1,50): foster-parenting-character
+(1,51): foster-parenting-character
+(1,52): foster-parenting-character
+(1,53): foster-parenting-character
+(1,54): foster-parenting-character
+(1,55): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "</plaintext>"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><table><td><plaintext></plaintext>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,49): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <plaintext>
+|               "</plaintext>"
+
+#data
+<!doctype html><table><caption><plaintext></plaintext>
+#errors
+(1,54): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <plaintext>
+|           "</plaintext>"
+
+#data
+<!doctype html><table><tr><style></script></style>abc
+#errors
+(1,51): foster-parenting-character
+(1,52): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "abc"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <style>
+|             "</script>"
+
+#data
+<!doctype html><table><tr><script></style></script>abc
+#errors
+(1,52): foster-parenting-character
+(1,53): foster-parenting-character
+(1,54): foster-parenting-character
+(1,54): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "abc"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <script>
+|             "</style>"
+
+#data
+<!doctype html><table><caption><style></script></style>abc
+#errors
+(1,58): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <style>
+|           "</script>"
+|         "abc"
+
+#data
+<!doctype html><table><td><style></script></style>abc
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,53): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <style>
+|               "</script>"
+|             "abc"
+
+#data
+<!doctype html><select><script></style></script>abc
+#errors
+(1,51): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <script>
+|         "</style>"
+|       "abc"
+
+#data
+<!doctype html><table><select><script></style></script>abc
+#errors
+(1,30): unexpected-start-tag-implies-table-voodoo
+(1,58): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <script>
+|         "</style>"
+|       "abc"
+|     <table>
+
+#data
+<!doctype html><table><tr><select><script></style></script>abc
+#errors
+(1,34): unexpected-start-tag-implies-table-voodoo
+(1,62): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <script>
+|         "</style>"
+|       "abc"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><frameset></frameset><noframes>abc
+#errors
+(1,49): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   <noframes>
+|     "abc"
+
+#data
+<!doctype html><frameset></frameset><noframes>abc</noframes><!--abc-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   <noframes>
+|     "abc"
+|   <!-- abc -->
+
+#data
+<!doctype html><frameset></frameset></html><noframes>abc
+#errors
+(1,56): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   <noframes>
+|     "abc"
+
+#data
+<!doctype html><frameset></frameset></html><noframes>abc</noframes><!--abc-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   <noframes>
+|     "abc"
+| <!-- abc -->
+
+#data
+<!doctype html><table><tr></tbody><tfoot>
+#errors
+(1,41): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|       <tfoot>
+
+#data
+<!doctype html><table><td><svg></svg>abc<td>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,44): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|             "abc"
+|           <td>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests19.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests19.dat
new file mode 100644
index 0000000000..a1897774df
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests19.dat
@@ -0,0 +1,1454 @@
+#data
+<!doctype html><math><mn DefinitionUrl="foo">
+#errors
+(1,45): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mn>
+|         definitionURL="foo"
+
+#data
+<!doctype html><html></p><!--foo-->
+#errors
+(1,25): end-tag-after-implied-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   <!-- foo -->
+|   <head>
+|   <body>
+
+#data
+<!doctype html><head></head></p><!--foo-->
+#errors
+(1,32): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <!-- foo -->
+|   <body>
+
+#data
+<!doctype html><body><p><pre>
+#errors
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <pre>
+
+#data
+<!doctype html><body><p><listing>
+#errors
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <listing>
+
+#data
+<!doctype html><p><plaintext>
+#errors
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <plaintext>
+
+#data
+<!doctype html><p><h1>
+#errors
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <h1>
+
+#data
+<!doctype html><isindex type="hidden">
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <isindex>
+|       type="hidden"
+
+#data
+<!doctype html><ruby><p><rp>
+#errors
+(1,28): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <p>
+|       <rp>
+
+#data
+<!doctype html><ruby><div><span><rp>
+#errors
+(1,36): XXX-undefined-error
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <span>
+|           <rp>
+
+#data
+<!doctype html><ruby><div><p><rp>
+#errors
+(1,33): XXX-undefined-error
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <p>
+|         <rp>
+
+#data
+<!doctype html><ruby><p><rt>
+#errors
+(1,28): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <p>
+|       <rt>
+
+#data
+<!doctype html><ruby><div><span><rt>
+#errors
+(1,36): XXX-undefined-error
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <span>
+|           <rt>
+
+#data
+<!doctype html><ruby><div><p><rt>
+#errors
+(1,33): XXX-undefined-error
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <p>
+|         <rt>
+
+#data
+<html><ruby>a<rb>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rb>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rp>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rp>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rt>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rt>
+|         "b"
+|       <rt>
+
+#data
+<html><ruby>a<rtc>b<rt>c<rb>d</ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       "a"
+|       <rtc>
+|         "b"
+|         <rt>
+|           "c"
+|       <rb>
+|         "d"
+
+#data
+<!doctype html><math/><foo>
+#errors
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|     <foo>
+
+#data
+<!doctype html><svg/><foo>
+#errors
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|     <foo>
+
+#data
+<!doctype html><div></body><!--foo-->
+#errors
+(1,27): expected-one-end-tag-but-got-another
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|   <!-- foo -->
+
+#data
+<!doctype html><h1><div><h3><span></h1>foo
+#errors
+(1,39): end-tag-too-early
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <h1>
+|       <div>
+|         <h3>
+|           <span>
+|         "foo"
+
+#data
+<!doctype html><p></h3>foo
+#errors
+(1,23): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "foo"
+
+#data
+<!doctype html><h3><li>abc</h2>foo
+#errors
+(1,31): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <h3>
+|       <li>
+|         "abc"
+|     "foo"
+
+#data
+<!doctype html><table>abc<!--foo-->
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+(1,35): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "abc"
+|     <table>
+|       <!-- foo -->
+
+#data
+<!doctype html><table>  <!--foo-->
+#errors
+(1,34): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       "  "
+|       <!-- foo -->
+
+#data
+<!doctype html><table> b <!--foo-->
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+(1,35): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     " b "
+|     <table>
+|       <!-- foo -->
+
+#data
+<!doctype html><select><option><option>
+#errors
+(1,39): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|       <option>
+
+#data
+<!doctype html><select><option></optgroup>
+#errors
+(1,42): unexpected-end-tag-in-select
+(1,42): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+
+#data
+<!doctype html><select><option></optgroup>
+#errors
+(1,42): unexpected-end-tag-in-select
+(1,42): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+
+#data
+<!doctype html><dd><optgroup><dd>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <dd>
+|       <optgroup>
+|     <dd>
+
+#data
+<!doctype html><p><math><mi><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math mi>
+|           <p>
+|           <h1>
+
+#data
+<!doctype html><p><math><mo><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math mo>
+|           <p>
+|           <h1>
+
+#data
+<!doctype html><p><math><mn><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math mn>
+|           <p>
+|           <h1>
+
+#data
+<!doctype html><p><math><ms><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math ms>
+|           <p>
+|           <h1>
+
+#data
+<!doctype html><p><math><mtext><p><h1>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math mtext>
+|           <p>
+|           <h1>
+
+#data
+<!doctype html><frameset></noframes>
+#errors
+(1,36): unexpected-end-tag-in-frameset
+(1,36): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><html c=d><body></html><html a=b>
+#errors
+(1,48): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   a="b"
+|   c="d"
+|   <head>
+|   <body>
+
+#data
+<!doctype html><html c=d><frameset></frameset></html><html a=b>
+#errors
+(1,63): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   a="b"
+|   c="d"
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html><!--foo-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+| <!-- foo -->
+
+#data
+<!doctype html><html><frameset></frameset></html>  
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   "  "
+
+#data
+<!doctype html><html><frameset></frameset></html>abc
+#errors
+(1,50): expected-eof-but-got-char
+(1,51): expected-eof-but-got-char
+(1,52): expected-eof-but-got-char
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html><p>
+#errors
+(1,52): expected-eof-but-got-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html></p>
+#errors
+(1,53): expected-eof-but-got-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<html><frameset></frameset></html><!doctype html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,49): unexpected-doctype
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><body><frameset>
+#errors
+(1,31): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!doctype html><p><frameset><frame>
+#errors
+(1,28): unexpected-start-tag
+(1,35): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<!doctype html><p>a<frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "a"
+
+#data
+<!doctype html><p> <frameset><frame>
+#errors
+(1,29): unexpected-start-tag
+(1,36): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<!doctype html><pre><frameset>
+#errors
+(1,30): unexpected-start-tag
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+
+#data
+<!doctype html><listing><frameset>
+#errors
+(1,34): unexpected-start-tag
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <listing>
+
+#data
+<!doctype html><li><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <li>
+
+#data
+<!doctype html><dd><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <dd>
+
+#data
+<!doctype html><dt><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <dt>
+
+#data
+<!doctype html><button><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <button>
+
+#data
+<!doctype html><applet><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <applet>
+
+#data
+<!doctype html><marquee><frameset>
+#errors
+(1,34): unexpected-start-tag
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <marquee>
+
+#data
+<!doctype html><object><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <object>
+
+#data
+<!doctype html><table><frameset>
+#errors
+(1,32): unexpected-start-tag-implies-table-voodoo
+(1,32): unexpected-start-tag
+(1,32): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+
+#data
+<!doctype html><area><frameset>
+#errors
+(1,31): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <area>
+
+#data
+<!doctype html><basefont><frameset>
+#errors
+(1,35): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <basefont>
+|   <frameset>
+
+#data
+<!doctype html><bgsound><frameset>
+#errors
+(1,34): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <bgsound>
+|   <frameset>
+
+#data
+<!doctype html><br><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <br>
+
+#data
+<!doctype html><embed><frameset>
+#errors
+(1,32): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <embed>
+
+#data
+<!doctype html><img><frameset>
+#errors
+(1,30): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <img>
+
+#data
+<!doctype html><input><frameset>
+#errors
+(1,32): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <input>
+
+#data
+<!doctype html><keygen><frameset>
+#errors
+(1,33): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <keygen>
+
+#data
+<!doctype html><wbr><frameset>
+#errors
+(1,30): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <wbr>
+
+#data
+<!doctype html><hr><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <hr>
+
+#data
+<!doctype html><textarea></textarea><frameset>
+#errors
+(1,46): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+
+#data
+<!doctype html><xmp></xmp><frameset>
+#errors
+(1,36): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <xmp>
+
+#data
+<!doctype html><iframe></iframe><frameset>
+#errors
+(1,42): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+
+#data
+<!doctype html><select></select><frameset>
+#errors
+(1,42): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!doctype html><svg></svg><frameset><frame>
+#errors
+(1,36): unexpected-start-tag
+(1,43): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<!doctype html><math></math><frameset><frame>
+#errors
+(1,38): unexpected-start-tag
+(1,45): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<!doctype html><svg><foreignObject><div> <frameset><frame>
+#errors
+(1,51): unexpected-start-tag
+(1,58): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<!doctype html><svg>a</svg><frameset><frame>
+#errors
+(1,37): unexpected-start-tag
+(1,44): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "a"
+
+#data
+<!doctype html><svg> </svg><frameset><frame>
+#errors
+(1,37): unexpected-start-tag
+(1,44): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     <frame>
+
+#data
+<html>aaa<frameset></frameset>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,19): unexpected-start-tag
+(1,30): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "aaa"
+
+#data
+<html> a <frameset></frameset>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,19): unexpected-start-tag
+(1,30): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "a "
+
+#data
+<!doctype html><div><frameset>
+#errors
+(1,30): unexpected-start-tag
+(1,30): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><div><body><frameset>
+#errors
+(1,26): unexpected-start-tag
+(1,36): unexpected-start-tag
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+
+#data
+<!doctype html><p><math></p>a
+#errors
+(1,28): unexpected-end-tag
+(1,28): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|     "a"
+
+#data
+<!doctype html><p><math><mn><span></p>a
+#errors
+(1,38): unexpected-end-tag
+(1,39): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <math math>
+|         <math mn>
+|           <span>
+|             <p>
+|             "a"
+
+#data
+<!doctype html><math></html>
+#errors
+(1,28): unexpected-end-tag
+(1,28): expected-one-end-tag-but-got-another
+(1,28): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+
+#data
+<!doctype html><meta charset="ascii">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <meta>
+|       charset="ascii"
+|   <body>
+
+#data
+<!doctype html><meta http-equiv="content-type" content="text/html;charset=ascii">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <meta>
+|       content="text/html;charset=ascii"
+|       http-equiv="content-type"
+|   <body>
+
+#data
+<!doctype html><head><!--aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa--><meta charset="utf8">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <!-- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa -->
+|     <meta>
+|       charset="utf8"
+|   <body>
+
+#data
+<!doctype html><html a=b><head></head><html c=d>
+#errors
+(1,48): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   a="b"
+|   c="d"
+|   <head>
+|   <body>
+
+#data
+<!doctype html><image/>
+#errors
+(1,23): image-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <img>
+
+#data
+<!doctype html>a<i>b<table>c<b>d</i>e</b>f
+#errors
+(1,28): foster-parenting-character
+(1,31): foster-parenting-start-tag
+(1,32): foster-parenting-character
+(1,36): foster-parenting-end-tag
+(1,36): adoption-agency-1.3
+(1,37): foster-parenting-character
+(1,41): foster-parenting-end-tag
+(1,42): foster-parenting-character
+(1,42): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "a"
+|     <i>
+|       "bc"
+|       <b>
+|         "de"
+|       "f"
+|       <table>
+
+#data
+<!doctype html><table><i>a<b>b<div>c<a>d</i>e</b>f
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,29): foster-parenting-start-tag
+(1,30): foster-parenting-character
+(1,35): foster-parenting-start-tag
+(1,36): foster-parenting-character
+(1,39): foster-parenting-start-tag
+(1,40): foster-parenting-character
+(1,44): foster-parenting-end-tag
+(1,44): adoption-agency-1.3
+(1,44): adoption-agency-1.3
+(1,45): foster-parenting-character
+(1,49): foster-parenting-end-tag
+(1,49): adoption-agency-1.3
+(1,49): adoption-agency-1.3
+(1,50): foster-parenting-character
+(1,50): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "a"
+|       <b>
+|         "b"
+|     <b>
+|     <div>
+|       <b>
+|         <i>
+|           "c"
+|           <a>
+|             "d"
+|         <a>
+|           "e"
+|       <a>
+|         "f"
+|     <table>
+
+#data
+<!doctype html><i>a<b>b<div>c<a>d</i>e</b>f
+#errors
+(1,37): adoption-agency-1.3
+(1,37): adoption-agency-1.3
+(1,42): adoption-agency-1.3
+(1,42): adoption-agency-1.3
+(1,43): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "a"
+|       <b>
+|         "b"
+|     <b>
+|     <div>
+|       <b>
+|         <i>
+|           "c"
+|           <a>
+|             "d"
+|         <a>
+|           "e"
+|       <a>
+|         "f"
+
+#data
+<!doctype html><table><i>a<b>b<div>c</i>
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,29): foster-parenting-start-tag
+(1,30): foster-parenting-character
+(1,35): foster-parenting-start-tag
+(1,36): foster-parenting-character
+(1,40): foster-parenting-end-tag
+(1,40): adoption-agency-1.3
+(1,40): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "a"
+|       <b>
+|         "b"
+|     <b>
+|       <div>
+|         <i>
+|           "c"
+|     <table>
+
+#data
+<!doctype html><table><i>a<b>b<div>c<a>d</i>e</b>f
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,29): foster-parenting-start-tag
+(1,30): foster-parenting-character
+(1,35): foster-parenting-start-tag
+(1,36): foster-parenting-character
+(1,39): foster-parenting-start-tag
+(1,40): foster-parenting-character
+(1,44): foster-parenting-end-tag
+(1,44): adoption-agency-1.3
+(1,44): adoption-agency-1.3
+(1,45): foster-parenting-character
+(1,49): foster-parenting-end-tag
+(1,44): adoption-agency-1.3
+(1,44): adoption-agency-1.3
+(1,50): foster-parenting-character
+(1,50): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "a"
+|       <b>
+|         "b"
+|     <b>
+|     <div>
+|       <b>
+|         <i>
+|           "c"
+|           <a>
+|             "d"
+|         <a>
+|           "e"
+|       <a>
+|         "f"
+|     <table>
+
+#data
+<!doctype html><table><i>a<div>b<tr>c<b>d</i>e
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,31): foster-parenting-start-tag
+(1,32): foster-parenting-character
+(1,37): foster-parenting-character
+(1,40): foster-parenting-start-tag
+(1,41): foster-parenting-character
+(1,45): foster-parenting-end-tag
+(1,45): adoption-agency-1.3
+(1,46): foster-parenting-character
+(1,46): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <i>
+|       "a"
+|       <div>
+|         "b"
+|     <i>
+|       "c"
+|       <b>
+|         "d"
+|     <b>
+|       "e"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><table><td><table><i>a<div>b<b>c</i>d
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,36): foster-parenting-start-tag
+(1,37): foster-parenting-character
+(1,42): foster-parenting-start-tag
+(1,43): foster-parenting-character
+(1,46): foster-parenting-start-tag
+(1,47): foster-parenting-character
+(1,51): foster-parenting-end-tag
+(1,51): adoption-agency-1.3
+(1,51): adoption-agency-1.3
+(1,52): foster-parenting-character
+(1,52): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <i>
+|               "a"
+|             <div>
+|               <i>
+|                 "b"
+|                 <b>
+|                   "c"
+|               <b>
+|                 "d"
+|             <table>
+
+#data
+<!doctype html><body><bgsound>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <bgsound>
+
+#data
+<!doctype html><body><basefont>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <basefont>
+
+#data
+<!doctype html><a><b></a><basefont>
+#errors
+(1,25): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|     <basefont>
+
+#data
+<!doctype html><a><b></a><bgsound>
+#errors
+(1,25): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|     <bgsound>
+
+#data
+<!doctype html><figcaption><article></figcaption>a
+#errors
+(1,49): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <figcaption>
+|       <article>
+|     "a"
+
+#data
+<!doctype html><summary><article></summary>a
+#errors
+(1,43): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <summary>
+|       <article>
+|     "a"
+
+#data
+<!doctype html><p><a><plaintext>b
+#errors
+(1,32): unexpected-end-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <a>
+|     <plaintext>
+|       <a>
+|         "b"
+
+#data
+<!DOCTYPE html><div>a<a></div>b<p>c</p>d
+#errors
+(1,30): end-tag-too-early
+(1,40): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "a"
+|       <a>
+|     <a>
+|       "b"
+|       <p>
+|         "c"
+|       "d"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests2.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests2.dat
new file mode 100644
index 0000000000..b44fec4d76
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests2.dat
@@ -0,0 +1,821 @@
+#data
+<!DOCTYPE html>Test
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "Test"
+
+#data
+<textarea>test</div>test
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,24): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "test</div>test"
+
+#data
+<table><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,11): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><td>test</tbody></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "test"
+
+#data
+<frame>test
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,7): unexpected-start-tag-ignored
+#document
+| <html>
+|   <head>
+|   <body>
+|     "test"
+
+#data
+<!DOCTYPE html><frameset>test
+#errors
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><frameset> te st
+#errors
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|     "  "
+
+#data
+<!DOCTYPE html><frameset></frameset> te st
+#errors
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+|   "  "
+
+#data
+<!DOCTYPE html><frameset><!DOCTYPE html>
+#errors
+(1,40): unexpected-doctype
+(1,40): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><font><p><b>test</font>
+#errors
+(1,38): adoption-agency-1.3
+(1,38): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|     <p>
+|       <font>
+|         <b>
+|           "test"
+
+#data
+<!DOCTYPE html><dt><div><dd>
+#errors
+(1,28): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <dt>
+|       <div>
+|     <dd>
+
+#data
+<script></x
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <script>
+|       "</x"
+|   <body>
+
+#data
+<table><plaintext><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,18): unexpected-start-tag-implies-table-voodoo
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "<td>"
+|     <table>
+
+#data
+<plaintext></plaintext>
+#errors
+(1,11): expected-doctype-but-got-start-tag
+(1,23): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <plaintext>
+|       "</plaintext>"
+
+#data
+<!DOCTYPE html><table><tr>TEST
+#errors
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "TEST"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!DOCTYPE html><body t1=1><body t2=2><body t3=3 t4=4>
+#errors
+(1,37): unexpected-start-tag
+(1,53): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     t1="1"
+|     t2="2"
+|     t3="3"
+|     t4="4"
+
+#data
+</b test
+#errors
+(1,8): eof-in-attribute-name
+(1,8): expected-doctype-but-got-eof
+#new-errors
+(1:9) eof-in-tag
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html></b test<b &=&amp>X
+#errors
+(1,24): invalid-character-in-attribute-name
+(1,32): named-entity-without-semicolon
+(1,33): attributes-in-end-tag
+(1,33): unexpected-end-tag-before-html
+#new-errors
+(1:24) unexpected-character-in-attribute-name
+(1:33) missing-semicolon-after-character-reference
+(1:33) end-tag-with-attributes
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+
+#data
+<!doctypehtml><scrIPt type=text/x-foobar;baz>X</SCRipt
+#errors
+(1,9): need-space-after-doctype
+(1,54): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       type="text/x-foobar;baz"
+|       "X</SCRipt"
+|   <body>
+
+#data
+&
+#errors
+(1,1): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&"
+
+#data
+&#
+#errors
+(1,2): expected-numeric-entity
+(1,2): expected-doctype-but-got-chars
+#new-errors
+(1:3) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&#"
+
+#data
+&#X
+#errors
+(1,3): expected-numeric-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:4) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&#X"
+
+#data
+&#x
+#errors
+(1,3): expected-numeric-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:4) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&#x"
+
+#data
+&#45
+#errors
+(1,4): numeric-entity-without-semicolon
+(1,4): expected-doctype-but-got-chars
+#new-errors
+(1:5) missing-semicolon-after-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "-"
+
+#data
+&x-test
+#errors
+(1,2): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&x-test"
+
+#data
+<!doctypehtml><p><li>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <li>
+
+#data
+<!doctypehtml><p><dt>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <dt>
+
+#data
+<!doctypehtml><p><dd>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <dd>
+
+#data
+<!doctypehtml><p><form>
+#errors
+(1,9): need-space-after-doctype
+(1,23): expected-closing-tag-but-got-eof
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <form>
+
+#data
+<!DOCTYPE html><p></P>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     "X"
+
+#data
+&AMP
+#errors
+(1,4): named-entity-without-semicolon
+(1,4): expected-doctype-but-got-chars
+#new-errors
+(1:5) missing-semicolon-after-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&"
+
+#data
+&AMp;
+#errors
+(1,3): expected-named-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:5) unknown-named-character-reference
+#document
+| <html>
+|   <head>
+|   <body>
+|     "&AMp;"
+
+#data
+<!DOCTYPE html><html><head></head><body><thisISasillyTESTelementNameToMakeSureCrazyTagNamesArePARSEDcorrectLY>
+#errors
+(1,110): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <thisisasillytestelementnametomakesurecrazytagnamesareparsedcorrectly>
+
+#data
+<!DOCTYPE html>X</body>X
+#errors
+(1,24): unexpected-char-after-body
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "XX"
+
+#data
+<!DOCTYPE html><!-- X
+#errors
+(1,21): eof-in-comment
+#new-errors
+(1:22) eof-in-comment
+#document
+| <!DOCTYPE html>
+| <!--  X -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><table><caption>test TEST</caption><td>test
+#errors
+(1,54): unexpected-cell-in-table-body
+(1,58): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         "test TEST"
+|       <tbody>
+|         <tr>
+|           <td>
+|             "test"
+
+#data
+<!DOCTYPE html><select><option><optgroup>
+#errors
+(1,41): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|       <optgroup>
+
+#data
+<!DOCTYPE html><select><optgroup><option></optgroup><option><select><option>
+#errors
+(1,68): unexpected-select-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <optgroup>
+|         <option>
+|       <option>
+|     <option>
+
+#data
+<!DOCTYPE html><select><optgroup><option><optgroup>
+#errors
+(1,51): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <optgroup>
+|         <option>
+|       <optgroup>
+
+#data
+<!DOCTYPE html><datalist><option>foo</datalist>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <datalist>
+|       <option>
+|         "foo"
+|     "bar"
+
+#data
+<!DOCTYPE html><font><input><input></font>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|       <input>
+|       <input>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX -->
+#errors
+#document
+| <!DOCTYPE html>
+| <!--  XXX - XXX  -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX
+#errors
+(1,29): eof-in-comment
+#new-errors
+(1:30) eof-in-comment
+#document
+| <!DOCTYPE html>
+| <!--  XXX - XXX -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX - XXX -->
+#errors
+#document
+| <!DOCTYPE html>
+| <!--  XXX - XXX - XXX  -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+test
+test
+#errors
+(2,4): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "test
+test"
+
+#data
+<!DOCTYPE html><body><title>test</body></title>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <title>
+|       "test</body>"
+
+#data
+<!DOCTYPE html><body><title>X</title><meta name=z><link rel=foo><style>
+x { content:"</style" } </style>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <title>
+|       "X"
+|     <meta>
+|       name="z"
+|     <link>
+|       rel="foo"
+|     <style>
+|       "
+x { content:"</style" } "
+
+#data
+<!DOCTYPE html><select><optgroup></optgroup></select>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <optgroup>
+
+#data
+ 
+ 
+#errors
+(2,1): expected-doctype-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html>  <html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><script>
+</script>  <title>x</title>  </head>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <script>
+|       "
+"
+|     "  "
+|     <title>
+|       "x"
+|     "  "
+|   <body>
+
+#data
+<!DOCTYPE html><html><body><html id=x>
+#errors
+(1,38): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   id="x"
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html>X</body><html id="x">
+#errors
+(1,36): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   id="x"
+|   <head>
+|   <body>
+|     "X"
+
+#data
+<!DOCTYPE html><head><html id=x>
+#errors
+(1,32): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+|   id="x"
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html>X</html>X
+#errors
+(1,24): expected-eof-but-got-char
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "XX"
+
+#data
+<!DOCTYPE html>X</html> 
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X "
+
+#data
+<!DOCTYPE html>X</html><p>X
+#errors
+(1,26): expected-eof-but-got-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+|     <p>
+|       "X"
+
+#data
+<!DOCTYPE html>X<p/x/y/z>
+#errors
+(1,19): unexpected-character-after-solidus-in-tag
+(1,21): unexpected-character-after-solidus-in-tag
+(1,23): unexpected-character-after-solidus-in-tag
+#new-errors
+(1:20) unexpected-solidus-in-tag
+(1:22) unexpected-solidus-in-tag
+(1:24) unexpected-solidus-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+|     <p>
+|       x=""
+|       y=""
+|       z=""
+
+#data
+<!DOCTYPE html><!--x--
+#errors
+(1,22): eof-in-comment-double-dash
+#new-errors
+(1:23) eof-in-comment
+#document
+| <!DOCTYPE html>
+| <!-- x -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE html><table><tr><td></p></table>
+#errors
+(1,34): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <p>
+
+#data
+<!DOCTYPE <!DOCTYPE HTML>><!--<!--x-->-->
+#errors
+(1,20): expected-space-or-right-bracket-in-doctype
+(1,25): unknown-doctype
+(1,35): unexpected-char-in-comment
+#new-errors
+(1:21) invalid-character-sequence-after-doctype-name
+(1:35) nested-comment
+#document
+| <!DOCTYPE <!doctype>
+| <html>
+|   <head>
+|   <body>
+|     ">"
+|     <!-- <!--x -->
+|     "-->"
+
+#data
+<!doctype html><div><form></form><div></div></div>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <form>
+|       <div>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests20.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests20.dat
new file mode 100644
index 0000000000..52c5acdc6e
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests20.dat
@@ -0,0 +1,516 @@
+#data
+<!doctype html><p><button><button>
+#errors
+(1,34): unexpected-start-tag-implies-end-tag
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|       <button>
+
+#data
+<!doctype html><p><button><address>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <address>
+
+#data
+<!doctype html><p><button><blockquote>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <blockquote>
+
+#data
+<!doctype html><p><button><menu>
+#errors
+(1,32): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <menu>
+
+#data
+<!doctype html><p><button><p>
+#errors
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <p>
+
+#data
+<!doctype html><p><button><ul>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <ul>
+
+#data
+<!doctype html><p><button><h1>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <h1>
+
+#data
+<!doctype html><p><button><h6>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <h6>
+
+#data
+<!doctype html><p><button><listing>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <listing>
+
+#data
+<!doctype html><p><button><pre>
+#errors
+(1,31): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <pre>
+
+#data
+<!doctype html><p><button><form>
+#errors
+(1,32): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <form>
+
+#data
+<!doctype html><p><button><li>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <li>
+
+#data
+<!doctype html><p><button><dd>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <dd>
+
+#data
+<!doctype html><p><button><dt>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <dt>
+
+#data
+<!doctype html><p><button><plaintext>
+#errors
+(1,37): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <plaintext>
+
+#data
+<!doctype html><p><button><table>
+#errors
+(1,33): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <table>
+
+#data
+<!doctype html><p><button><hr>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <hr>
+
+#data
+<!doctype html><p><button><xmp>
+#errors
+(1,31): expected-named-closing-tag-but-got-eof
+(1,31): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <xmp>
+
+#data
+<!doctype html><p><button></p>
+#errors
+(1,30): unexpected-end-tag
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <button>
+|         <p>
+
+#data
+<!doctype html><address><button></address>a
+#errors
+(1,42): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <address>
+|       <button>
+|     "a"
+
+#data
+<!doctype html><address><button></address>a
+#errors
+(1,42): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <address>
+|       <button>
+|     "a"
+
+#data
+<p><table></p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,14): unexpected-end-tag-implies-table-voodoo
+(1,14): unexpected-end-tag
+(1,14): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <p>
+|       <table>
+
+#data
+<!doctype html><svg>
+#errors
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<!doctype html><p><figcaption>
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <figcaption>
+
+#data
+<!doctype html><p><summary>
+#errors
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <summary>
+
+#data
+<!doctype html><form><table><form>
+#errors
+(1,34): unexpected-form-in-table
+(1,34): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <table>
+
+#data
+<!doctype html><table><form><form>
+#errors
+(1,28): unexpected-form-in-table
+(1,34): unexpected-form-in-table
+(1,34): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <form>
+
+#data
+<!doctype html><table><form></table><form>
+#errors
+(1,28): unexpected-form-in-table
+(1,42): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <form>
+
+#data
+<!doctype html><svg><foreignObject><p>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg foreignObject>
+|         <p>
+
+#data
+<!doctype html><svg><title>abc
+#errors
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg title>
+|         "abc"
+
+#data
+<option><span><option>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <option>
+|       <span>
+|         <option>
+
+#data
+<option><option>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <option>
+|     <option>
+
+#data
+<math><annotation-xml><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): unexpected-html-element-in-foreign-content
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|     <div>
+
+#data
+<math><annotation-xml encoding="application/svg+xml"><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,58): unexpected-html-element-in-foreign-content
+(1,58): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding="application/svg+xml"
+|     <div>
+
+#data
+<math><annotation-xml encoding="application/xhtml+xml"><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,60): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding="application/xhtml+xml"
+|         <div>
+
+#data
+<math><annotation-xml encoding="aPPlication/xhtmL+xMl"><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,60): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding="aPPlication/xhtmL+xMl"
+|         <div>
+
+#data
+<math><annotation-xml encoding="text/html"><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,48): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding="text/html"
+|         <div>
+
+#data
+<math><annotation-xml encoding="Text/htmL"><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,48): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding="Text/htmL"
+|         <div>
+
+#data
+<math><annotation-xml encoding=" text/html "><div>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,50): unexpected-html-element-in-foreign-content
+(1,50): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         encoding=" text/html "
+|     <div>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests21.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests21.dat
new file mode 100644
index 0000000000..d384a55564
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests21.dat
@@ -0,0 +1,305 @@
+#data
+<svg><![CDATA[foo]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo"
+
+#data
+<math><![CDATA[foo]]>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       "foo"
+
+#data
+<div><![CDATA[foo]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,7): expected-dashes-or-doctype
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <!-- [CDATA[foo]] -->
+
+#data
+<svg><![CDATA[foo
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo"
+
+#data
+<svg><![CDATA[foo
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo"
+
+#data
+<svg><![CDATA[
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,14): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<svg><![CDATA[]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+
+#data
+<svg><![CDATA[]] >]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "]] >"
+
+#data
+<svg><![CDATA[]] >]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "]] >"
+
+#data
+<svg><![CDATA[]]
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "]]"
+
+#data
+<svg><![CDATA[]
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "]"
+
+#data
+<svg><![CDATA[]>a
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "]>a"
+
+#data
+<!DOCTYPE html><svg><![CDATA[foo]]]>
+#errors
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo]"
+
+#data
+<!DOCTYPE html><svg><![CDATA[foo]]]]>
+#errors
+(1,37): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo]]"
+
+#data
+<!DOCTYPE html><svg><![CDATA[foo]]]]]>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "foo]]]"
+
+#data
+<svg><foreignObject><div><![CDATA[foo]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,27): expected-dashes-or-doctype
+(1,40): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg foreignObject>
+|         <div>
+|           <!-- [CDATA[foo]] -->
+
+#data
+<svg><![CDATA[<svg>]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>"
+
+#data
+<svg><![CDATA[</svg>a]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,24): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "</svg>a"
+
+#data
+<svg><![CDATA[<svg>a
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>a"
+
+#data
+<svg><![CDATA[</svg>a
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "</svg>a"
+
+#data
+<svg><![CDATA[<svg>]]><path>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,28): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>"
+|       <svg path>
+
+#data
+<svg><![CDATA[<svg>]]></path>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,29): unexpected-end-tag
+(1,29): unexpected-end-tag
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>"
+
+#data
+<svg><![CDATA[<svg>]]><!--path-->
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>"
+|       <!-- path -->
+
+#data
+<svg><![CDATA[<svg>]]>path
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<svg>path"
+
+#data
+<svg><![CDATA[<!--svg-->]]>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       "<!--svg-->"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests22.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests22.dat
new file mode 100644
index 0000000000..31e6d9e331
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests22.dat
@@ -0,0 +1,190 @@
+#data
+<a><b><big><em><strong><div>X</a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,33): adoption-agency-1.3
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|         <big>
+|           <em>
+|             <strong>
+|     <big>
+|       <em>
+|         <strong>
+|           <div>
+|             <a>
+|               "X"
+
+#data
+<a><b><div id=1><div id=2><div id=3><div id=4><div id=5><div id=6><div id=7><div id=8>A</a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): adoption-agency-1.3
+(1,91): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|     <b>
+|       <div>
+|         id="1"
+|         <a>
+|         <div>
+|           id="2"
+|           <a>
+|           <div>
+|             id="3"
+|             <a>
+|             <div>
+|               id="4"
+|               <a>
+|               <div>
+|                 id="5"
+|                 <a>
+|                 <div>
+|                   id="6"
+|                   <a>
+|                   <div>
+|                     id="7"
+|                     <a>
+|                     <div>
+|                       id="8"
+|                       <a>
+|                         "A"
+
+#data
+<a><b><div id=1><div id=2><div id=3><div id=4><div id=5><div id=6><div id=7><div id=8><div id=9>A</a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): adoption-agency-1.3
+(1,101): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|     <b>
+|       <div>
+|         id="1"
+|         <a>
+|         <div>
+|           id="2"
+|           <a>
+|           <div>
+|             id="3"
+|             <a>
+|             <div>
+|               id="4"
+|               <a>
+|               <div>
+|                 id="5"
+|                 <a>
+|                 <div>
+|                   id="6"
+|                   <a>
+|                   <div>
+|                     id="7"
+|                     <a>
+|                     <div>
+|                       id="8"
+|                       <a>
+|                         <div>
+|                           id="9"
+|                           "A"
+
+#data
+<a><b><div id=1><div id=2><div id=3><div id=4><div id=5><div id=6><div id=7><div id=8><div id=9><div id=10>A</a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): adoption-agency-1.3
+(1,112): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       <b>
+|     <b>
+|       <div>
+|         id="1"
+|         <a>
+|         <div>
+|           id="2"
+|           <a>
+|           <div>
+|             id="3"
+|             <a>
+|             <div>
+|               id="4"
+|               <a>
+|               <div>
+|                 id="5"
+|                 <a>
+|                 <div>
+|                   id="6"
+|                   <a>
+|                   <div>
+|                     id="7"
+|                     <a>
+|                     <div>
+|                       id="8"
+|                       <a>
+|                         <div>
+|                           id="9"
+|                           <div>
+|                             id="10"
+|                             "A"
+
+#data
+<cite><b><cite><i><cite><i><cite><i><div>X</b>TEST
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,46): adoption-agency-1.3
+(1,50): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <cite>
+|       <b>
+|         <cite>
+|           <i>
+|             <cite>
+|               <i>
+|                 <cite>
+|                   <i>
+|       <i>
+|         <i>
+|           <div>
+|             <b>
+|               "X"
+|             "TEST"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests23.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests23.dat
new file mode 100644
index 0000000000..49e4a4ace5
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests23.dat
@@ -0,0 +1,168 @@
+#data
+<p><font size=4><font color=red><font size=4><font size=4><font size=4><font size=4><font size=4><font color=red><p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,116): unexpected-end-tag
+(1,117): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           color="red"
+|           <font>
+|             size="4"
+|             <font>
+|               size="4"
+|               <font>
+|                 size="4"
+|                 <font>
+|                   size="4"
+|                   <font>
+|                     size="4"
+|                     <font>
+|                       color="red"
+|     <p>
+|       <font>
+|         color="red"
+|         <font>
+|           size="4"
+|           <font>
+|             size="4"
+|             <font>
+|               size="4"
+|               <font>
+|                 color="red"
+|                 "X"
+
+#data
+<p><font size=4><font size=4><font size=4><font size=4><p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,58): unexpected-end-tag
+(1,59): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="4"
+|             <font>
+|               size="4"
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="4"
+|             "X"
+
+#data
+<p><font size=4><font size=4><font size=4><font size="5"><font size=4><p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,73): unexpected-end-tag
+(1,74): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="4"
+|             <font>
+|               size="5"
+|               <font>
+|                 size="4"
+|     <p>
+|       <font>
+|         size="4"
+|         <font>
+|           size="4"
+|           <font>
+|             size="5"
+|             <font>
+|               size="4"
+|               "X"
+
+#data
+<p><font size=4 id=a><font size=4 id=b><font size=4><font size=4><p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,68): unexpected-end-tag
+(1,69): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <font>
+|         id="a"
+|         size="4"
+|         <font>
+|           id="b"
+|           size="4"
+|           <font>
+|             size="4"
+|             <font>
+|               size="4"
+|     <p>
+|       <font>
+|         id="a"
+|         size="4"
+|         <font>
+|           id="b"
+|           size="4"
+|           <font>
+|             size="4"
+|             <font>
+|               size="4"
+|               "X"
+
+#data
+<p><b id=a><b id=a><b id=a><b><object><b id=a><b id=a>X</object><p>Y
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,64): end-tag-too-early
+(1,67): unexpected-end-tag
+(1,68): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <b>
+|         id="a"
+|         <b>
+|           id="a"
+|           <b>
+|             id="a"
+|             <b>
+|               <object>
+|                 <b>
+|                   id="a"
+|                   <b>
+|                     id="a"
+|                     "X"
+|     <p>
+|       <b>
+|         id="a"
+|         <b>
+|           id="a"
+|           <b>
+|             id="a"
+|             <b>
+|               "Y"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests24.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests24.dat
new file mode 100644
index 0000000000..f6dc7eb48a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests24.dat
@@ -0,0 +1,79 @@
+#data
+<!DOCTYPE html>&NotEqualTilde;
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "≂̸"
+
+#data
+<!DOCTYPE html>&NotEqualTilde;A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "≂̸A"
+
+#data
+<!DOCTYPE html>&ThickSpace;
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "  "
+
+#data
+<!DOCTYPE html>&ThickSpace;A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "  A"
+
+#data
+<!DOCTYPE html>&NotSubset;
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "⊂⃒"
+
+#data
+<!DOCTYPE html>&NotSubset;A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "⊂⃒A"
+
+#data
+<!DOCTYPE html>&Gopf;
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "𝔾"
+
+#data
+<!DOCTYPE html>&Gopf;A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "𝔾A"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests25.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests25.dat
new file mode 100644
index 0000000000..cbc00512b1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests25.dat
@@ -0,0 +1,220 @@
+#data
+<!DOCTYPE html><body><foo>A
+#errors
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       "A"
+
+#data
+<!DOCTYPE html><body><area>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <area>
+|     "A"
+
+#data
+<!DOCTYPE html><body><base>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <base>
+|     "A"
+
+#data
+<!DOCTYPE html><body><basefont>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <basefont>
+|     "A"
+
+#data
+<!DOCTYPE html><body><bgsound>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <bgsound>
+|     "A"
+
+#data
+<!DOCTYPE html><body><br>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <br>
+|     "A"
+
+#data
+<!DOCTYPE html><body><col>A
+#errors
+(1,26): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "A"
+
+#data
+<!DOCTYPE html><body><command>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <command>
+|       "A"
+
+#data
+<!DOCTYPE html><body><embed>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <embed>
+|     "A"
+
+#data
+<!DOCTYPE html><body><frame>A
+#errors
+(1,28): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "A"
+
+#data
+<!DOCTYPE html><body><hr>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <hr>
+|     "A"
+
+#data
+<!DOCTYPE html><body><img>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <img>
+|     "A"
+
+#data
+<!DOCTYPE html><body><input>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <input>
+|     "A"
+
+#data
+<!DOCTYPE html><body><keygen>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <keygen>
+|     "A"
+
+#data
+<!DOCTYPE html><body><link>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <link>
+|     "A"
+
+#data
+<!DOCTYPE html><body><meta>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <meta>
+|     "A"
+
+#data
+<!DOCTYPE html><body><param>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <param>
+|     "A"
+
+#data
+<!DOCTYPE html><body><source>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <source>
+|     "A"
+
+#data
+<!DOCTYPE html><body><track>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <track>
+|     "A"
+
+#data
+<!DOCTYPE html><body><wbr>A
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <wbr>
+|     "A"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests26.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests26.dat
new file mode 100644
index 0000000000..867bbeecd5
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests26.dat
@@ -0,0 +1,411 @@
+#data
+<!DOCTYPE html><body><a href='#1'><nobr>1<nobr></a><br><a href='#2'><nobr>2<nobr></a><br><a href='#3'><nobr>3<nobr></a>
+#errors
+(1,47): unexpected-start-tag-implies-end-tag
+(1,51): adoption-agency-1.3
+(1,74): unexpected-start-tag-implies-end-tag
+(1,74): adoption-agency-1.3
+(1,81): unexpected-start-tag-implies-end-tag
+(1,85): adoption-agency-1.3
+(1,108): unexpected-start-tag-implies-end-tag
+(1,108): adoption-agency-1.3
+(1,115): unexpected-start-tag-implies-end-tag
+(1,119): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       href="#1"
+|       <nobr>
+|         "1"
+|       <nobr>
+|     <nobr>
+|       <br>
+|       <a>
+|         href="#2"
+|     <a>
+|       href="#2"
+|       <nobr>
+|         "2"
+|       <nobr>
+|     <nobr>
+|       <br>
+|       <a>
+|         href="#3"
+|     <a>
+|       href="#3"
+|       <nobr>
+|         "3"
+|       <nobr>
+
+#data
+<!DOCTYPE html><body><b><nobr>1<nobr></b><i><nobr>2<nobr></i>3
+#errors
+(1,37): unexpected-start-tag-implies-end-tag
+(1,41): adoption-agency-1.3
+(1,50): unexpected-start-tag-implies-end-tag
+(1,50): adoption-agency-1.3
+(1,57): unexpected-start-tag-implies-end-tag
+(1,61): adoption-agency-1.3
+(1,62): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|       <nobr>
+|     <nobr>
+|       <i>
+|     <i>
+|       <nobr>
+|         "2"
+|       <nobr>
+|     <nobr>
+|       "3"
+
+#data
+<!DOCTYPE html><body><b><nobr>1<table><nobr></b><i><nobr>2<nobr></i>3
+#errors
+(1,44): foster-parenting-start-tag
+(1,48): foster-parenting-end-tag
+(1,48): adoption-agency-1.3
+(1,51): foster-parenting-start-tag
+(1,57): foster-parenting-start-tag
+(1,57): nobr-already-in-scope
+(1,57): adoption-agency-1.2
+(1,58): foster-parenting-character
+(1,64): foster-parenting-start-tag
+(1,64): nobr-already-in-scope
+(1,68): foster-parenting-end-tag
+(1,68): adoption-agency-1.2
+(1,69): foster-parenting-character
+(1,69): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|         <nobr>
+|           <i>
+|         <i>
+|           <nobr>
+|             "2"
+|           <nobr>
+|         <nobr>
+|           "3"
+|         <table>
+
+#data
+<!DOCTYPE html><body><b><nobr>1<table><tr><td><nobr></b><i><nobr>2<nobr></i>3
+#errors
+(1,56): unexpected-end-tag
+(1,65): unexpected-start-tag-implies-end-tag
+(1,65): adoption-agency-1.3
+(1,72): unexpected-start-tag-implies-end-tag
+(1,76): adoption-agency-1.3
+(1,77): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|         <table>
+|           <tbody>
+|             <tr>
+|               <td>
+|                 <nobr>
+|                   <i>
+|                 <i>
+|                   <nobr>
+|                     "2"
+|                   <nobr>
+|                 <nobr>
+|                   "3"
+
+#data
+<!DOCTYPE html><body><b><nobr>1<div><nobr></b><i><nobr>2<nobr></i>3
+#errors
+(1,42): unexpected-start-tag-implies-end-tag
+(1,42): adoption-agency-1.3
+(1,46): adoption-agency-1.3
+(1,46): adoption-agency-1.3
+(1,55): unexpected-start-tag-implies-end-tag
+(1,55): adoption-agency-1.3
+(1,62): unexpected-start-tag-implies-end-tag
+(1,66): adoption-agency-1.3
+(1,67): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|     <div>
+|       <b>
+|         <nobr>
+|         <nobr>
+|       <nobr>
+|         <i>
+|       <i>
+|         <nobr>
+|           "2"
+|         <nobr>
+|       <nobr>
+|         "3"
+
+#data
+<!DOCTYPE html><body><b><nobr>1<nobr></b><div><i><nobr>2<nobr></i>3
+#errors
+(1,37): unexpected-start-tag-implies-end-tag
+(1,41): adoption-agency-1.3
+(1,55): unexpected-start-tag-implies-end-tag
+(1,55): adoption-agency-1.3
+(1,62): unexpected-start-tag-implies-end-tag
+(1,66): adoption-agency-1.3
+(1,67): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|       <nobr>
+|     <div>
+|       <nobr>
+|         <i>
+|       <i>
+|         <nobr>
+|           "2"
+|         <nobr>
+|       <nobr>
+|         "3"
+
+#data
+<!DOCTYPE html><body><b><nobr>1<nobr><ins></b><i><nobr>
+#errors
+(1,37): unexpected-start-tag-implies-end-tag
+(1,46): adoption-agency-1.3
+(1,55): unexpected-start-tag-implies-end-tag
+(1,55): adoption-agency-1.3
+(1,55): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|       <nobr>
+|         <ins>
+|     <nobr>
+|       <i>
+|     <i>
+|       <nobr>
+
+#data
+<!DOCTYPE html><body><b><nobr>1<ins><nobr></b><i>2
+#errors
+(1,42): unexpected-start-tag-implies-end-tag
+(1,42): adoption-agency-1.3
+(1,46): adoption-agency-1.3
+(1,50): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       <nobr>
+|         "1"
+|         <ins>
+|       <nobr>
+|     <nobr>
+|       <i>
+|         "2"
+
+#data
+<!DOCTYPE html><body><b>1<nobr></b><i><nobr>2</i>
+#errors
+(1,35): adoption-agency-1.3
+(1,44): unexpected-start-tag-implies-end-tag
+(1,44): adoption-agency-1.3
+(1,49): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "1"
+|       <nobr>
+|     <nobr>
+|       <i>
+|     <i>
+|       <nobr>
+|         "2"
+
+#data
+<p><code x</code></p>
+
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,11): invalid-character-in-attribute-name
+(1,12): unexpected-character-after-solidus-in-tag
+(1,21): unexpected-end-tag
+(2,0): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <code>
+|         code=""
+|         x<=""
+|     <code>
+|       code=""
+|       x<=""
+|       "
+"
+
+#data
+<!DOCTYPE html><svg><foreignObject><p><i></p>a
+#errors
+(1,45): unexpected-end-tag
+(1,46): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg foreignObject>
+|         <p>
+|           <i>
+|         <i>
+|           "a"
+
+#data
+<!DOCTYPE html><table><tr><td><svg><foreignObject><p><i></p>a
+#errors
+(1,60): unexpected-end-tag
+(1,61): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <svg svg>
+|               <svg foreignObject>
+|                 <p>
+|                   <i>
+|                 <i>
+|                   "a"
+
+#data
+<!DOCTYPE html><math><mtext><p><i></p>a
+#errors
+(1,38): unexpected-end-tag
+(1,39): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mtext>
+|         <p>
+|           <i>
+|         <i>
+|           "a"
+
+#data
+<!DOCTYPE html><table><tr><td><math><mtext><p><i></p>a
+#errors
+(1,53): unexpected-end-tag
+(1,54): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <math math>
+|               <math mtext>
+|                 <p>
+|                   <i>
+|                 <i>
+|                   "a"
+
+#data
+<!DOCTYPE html><body><div><!/div>a
+#errors
+(1,28): expected-dashes-or-doctype
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <!-- /div -->
+|       "a"
+
+#data
+<button><p><button>
+#errors
+Line 1 Col 8 Unexpected start tag (button). Expected DOCTYPE.
+Line 1 Col 19 Unexpected start tag (button) implies end tag (button).
+Line 1 Col 19 Expected closing tag. Unexpected end of file.
+#document
+| <html>
+|   <head>
+|   <body>
+|     <button>
+|       <p>
+|     <button>
+
+#data
+<!DOCTYPE html><html><frameset></frameset></html></frameset>
+#errors
+60: Stray end tag “frameset”.
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><html><frameset></frameset></html>XXX</frameset>
+#errors
+52: Non-space character in page trailer.
+52: Non-space character in page trailer.
+52: Non-space character in page trailer.
+63: Stray end tag “frameset”.
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests3.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests3.dat
new file mode 100644
index 0000000000..423e2b3cab
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests3.dat
@@ -0,0 +1,306 @@
+#data
+<head></head><style></style>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,20): unexpected-start-tag-out-of-my-head
+#document
+| <html>
+|   <head>
+|     <style>
+|   <body>
+
+#data
+<head></head><script></script>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): unexpected-start-tag-out-of-my-head
+#document
+| <html>
+|   <head>
+|     <script>
+|   <body>
+
+#data
+<head></head><!-- --><style></style><!-- --><script></script>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,28): unexpected-start-tag-out-of-my-head
+(1,52): unexpected-start-tag-out-of-my-head
+#document
+| <html>
+|   <head>
+|     <style>
+|     <script>
+|   <!--   -->
+|   <!--   -->
+|   <body>
+
+#data
+<head></head><!-- -->x<style></style><!-- --><script></script>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <!--   -->
+|   <body>
+|     "x"
+|     <style>
+|     <!--   -->
+|     <script>
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>
+</pre></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>
+foo</pre></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "foo"
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>
+
+foo</pre></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "
+foo"
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>
+foo
+</pre></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "foo
+"
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>x</pre><span>
+</span></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "x"
+|     <span>
+|       "
+"
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>x
+y</pre></body></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "x
+y"
+
+#data
+<!DOCTYPE html><html><head></head><body><pre>x<div>
+y</pre></body></html>
+#errors
+(2,7): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "x"
+|       <div>
+|         "
+y"
+
+#data
+<!DOCTYPE html><pre>&#x0a;&#x0a;A</pre>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <pre>
+|       "
+A"
+
+#data
+<!DOCTYPE html><HTML><META><HEAD></HEAD></HTML>
+#errors
+(1,33): two-heads-are-not-better-than-one
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <meta>
+|   <body>
+
+#data
+<!DOCTYPE html><HTML><HEAD><head></HEAD></HTML>
+#errors
+(1,33): two-heads-are-not-better-than-one
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<textarea>foo<span>bar</span><i>baz
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "foo<span>bar</span><i>baz"
+
+#data
+<title>foo<span>bar</em><i>baz
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,30): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|     <title>
+|       "foo<span>bar</em><i>baz"
+|   <body>
+
+#data
+<!DOCTYPE html><textarea>
+</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+
+#data
+<!DOCTYPE html><textarea>
+foo</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "foo"
+
+#data
+<!DOCTYPE html><textarea>
+
+foo</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       "
+foo"
+
+#data
+<!DOCTYPE html><html><head></head><body><ul><li><div><p><li></ul></body></html>
+#errors
+(1,60): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <ul>
+|       <li>
+|         <div>
+|           <p>
+|       <li>
+
+#data
+<!doctype html><nobr><nobr><nobr>
+#errors
+(1,27): unexpected-start-tag-implies-end-tag
+(1,33): unexpected-start-tag-implies-end-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <nobr>
+|     <nobr>
+|     <nobr>
+
+#data
+<!doctype html><nobr><nobr></nobr><nobr>
+#errors
+(1,27): unexpected-start-tag-implies-end-tag
+(1,40): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <nobr>
+|     <nobr>
+|     <nobr>
+
+#data
+<!doctype html><html><body><p><table></table></body></html>
+#errors
+Not known
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <table>
+
+#data
+<p><table></table>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <table>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests4.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests4.dat
new file mode 100644
index 0000000000..0a6174c36c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests4.dat
@@ -0,0 +1,58 @@
+#data
+direct div content
+#errors
+#document-fragment
+div
+#document
+| "direct div content"
+
+#data
+direct textarea content
+#errors
+#document-fragment
+textarea
+#document
+| "direct textarea content"
+
+#data
+textarea content with <em>pseudo</em> <foo>markup
+#errors
+#document-fragment
+textarea
+#document
+| "textarea content with <em>pseudo</em> <foo>markup"
+
+#data
+this is &#x0043;DATA inside a <style> element
+#errors
+#document-fragment
+style
+#document
+| "this is &#x0043;DATA inside a <style> element"
+
+#data
+</plaintext>
+#errors
+#document-fragment
+plaintext
+#document
+| "</plaintext>"
+
+#data
+setting html's innerHTML
+#errors
+#document-fragment
+html
+#document
+| <head>
+| <body>
+|   "setting html's innerHTML"
+
+#data
+<title>setting head's innerHTML</title>
+#errors
+#document-fragment
+head
+#document
+| <title>
+|   "setting head's innerHTML"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests5.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests5.dat
new file mode 100644
index 0000000000..4d5fcd7a79
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests5.dat
@@ -0,0 +1,197 @@
+#data
+<style> <!-- </style>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       " <!-- "
+|   <body>
+|     "x"
+
+#data
+<style> <!-- </style> --> </style>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,34): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       " <!-- "
+|     " "
+|   <body>
+|     "--> x"
+
+#data
+<style> <!--> </style>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       " <!--> "
+|   <body>
+|     "x"
+
+#data
+<style> <!---> </style>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       " <!---> "
+|   <body>
+|     "x"
+
+#data
+<iframe> <!---> </iframe>x
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       " <!---> "
+|     "x"
+
+#data
+<iframe> <!--- </iframe>->x</iframe> --> </iframe>x
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,36): unexpected-end-tag
+(1,50): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <iframe>
+|       " <!--- "
+|     "->x --> x"
+
+#data
+<script> <!-- </script> --> </script>x
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,37): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <script>
+|       " <!-- "
+|     " "
+|   <body>
+|     "--> x"
+
+#data
+<title> <!-- </title> --> </title>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,34): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       " <!-- "
+|     " "
+|   <body>
+|     "--> x"
+
+#data
+<textarea> <!--- </textarea>->x</textarea> --> </textarea>x
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,42): unexpected-end-tag
+(1,58): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <textarea>
+|       " <!--- "
+|     "->x --> x"
+
+#data
+<style> <!</-- </style>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <style>
+|       " <!</-- "
+|   <body>
+|     "x"
+
+#data
+<p><xmp></xmp>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|     <xmp>
+
+#data
+<xmp> <!-- > --> </xmp>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <xmp>
+|       " <!-- > --> "
+
+#data
+<title>&amp;</title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "&"
+|   <body>
+
+#data
+<title><!--&amp;--></title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "<!--&-->"
+|   <body>
+
+#data
+<title><!--</title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|     <title>
+|       "<!--"
+|   <body>
+
+#data
+<noscript><!--</noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,39): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|     <noscript>
+|       "<!--"
+|   <body>
+|     "-->"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests6.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests6.dat
new file mode 100644
index 0000000000..fedc64e938
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests6.dat
@@ -0,0 +1,662 @@
+#data
+<!doctype html></head> <head>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   " "
+|   <body>
+
+#data
+<!doctype html><form><div></form><div>
+#errors
+(1,33): end-tag-too-early-ignored
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <form>
+|       <div>
+|         <div>
+
+#data
+<!doctype html><title>&amp;</title>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "&"
+|   <body>
+
+#data
+<!doctype html><title><!--&amp;--></title>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "<!--&-->"
+|   <body>
+
+#data
+<!doctype>
+#errors
+(1,9): need-space-after-doctype
+(1,10): expected-doctype-name-but-got-right-bracket
+(1,10): unknown-doctype
+#document
+| <!DOCTYPE >
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!---x
+#errors
+(1,6): eof-in-comment
+(1,6): expected-doctype-but-got-eof
+#document
+| <!-- -x -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<body>
+<div>
+#errors
+(1,6): unexpected-start-tag
+(2,5): expected-closing-tag-but-got-eof
+#document-fragment
+div
+#document
+| "
+"
+| <div>
+
+#data
+<frameset></frameset>
+foo
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(2,1): unexpected-char-after-frameset
+(2,2): unexpected-char-after-frameset
+(2,3): unexpected-char-after-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   "
+"
+
+#data
+<frameset></frameset>
+<noframes>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(2,10): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   "
+"
+|   <noframes>
+
+#data
+<frameset></frameset>
+<div>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(2,5): unexpected-start-tag-after-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   "
+"
+
+#data
+<frameset></frameset>
+</html>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   "
+"
+
+#data
+<frameset></frameset>
+</div>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(2,6): unexpected-end-tag-after-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   "
+"
+
+#data
+<form><form>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,12): unexpected-start-tag
+(1,12): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <form>
+
+#data
+<button><button>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,16): unexpected-start-tag-implies-end-tag
+(1,16): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <button>
+|     <button>
+
+#data
+<table><tr><td></th>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): unexpected-end-tag
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><caption><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): XXX-undefined-error
+(1,20): unexpected-cell-in-table-body
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><caption><div>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <div>
+
+#data
+</caption><div>
+#errors
+(1,10): XXX-undefined-error
+(1,15): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <div>
+
+#data
+<table><caption><div></caption>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,31): expected-one-end-tag-but-got-another
+(1,31): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <div>
+
+#data
+<table><caption></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,24): end-table-tag-in-caption
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+
+#data
+</table><div>
+#errors
+(1,8): unexpected-end-tag
+(1,13): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <div>
+
+#data
+<table><caption></body></col></colgroup></html></tbody></td></tfoot></th></thead></tr>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,23): unexpected-end-tag
+(1,29): unexpected-end-tag
+(1,40): unexpected-end-tag
+(1,47): unexpected-end-tag
+(1,55): unexpected-end-tag
+(1,60): unexpected-end-tag
+(1,68): unexpected-end-tag
+(1,73): unexpected-end-tag
+(1,81): unexpected-end-tag
+(1,86): unexpected-end-tag
+(1,86): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+
+#data
+<table><caption><div></div>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <div>
+
+#data
+<table><tr><td></body></caption></col></colgroup></html>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,22): unexpected-end-tag
+(1,32): unexpected-end-tag
+(1,38): unexpected-end-tag
+(1,49): unexpected-end-tag
+(1,56): unexpected-end-tag
+(1,56): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+</table></tbody></tfoot></thead></tr><div>
+#errors
+(1,8): unexpected-end-tag
+(1,16): unexpected-end-tag
+(1,24): unexpected-end-tag
+(1,32): unexpected-end-tag
+(1,37): unexpected-end-tag
+(1,42): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <div>
+
+#data
+<table><colgroup>foo
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,18): foster-parenting-character-in-table
+(1,19): foster-parenting-character-in-table
+(1,20): foster-parenting-character-in-table
+(1,20): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     "foo"
+|     <table>
+|       <colgroup>
+
+#data
+foo<col>
+#errors
+(1,1): unexpected-character-in-colgroup
+(1,2): unexpected-character-in-colgroup
+(1,3): unexpected-character-in-colgroup
+#document-fragment
+colgroup
+#document
+| <col>
+
+#data
+<table><colgroup></col>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,23): no-end-tag
+(1,23): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <colgroup>
+
+#data
+<frameset><div>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,15): unexpected-start-tag-in-frameset
+(1,15): eof-in-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+</frameset><frame>
+#errors
+(1,11): unexpected-frameset-in-frameset-innerhtml
+#document-fragment
+frameset
+#document
+| <frame>
+
+#data
+<frameset></div>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,16): unexpected-end-tag-in-frameset
+(1,16): eof-in-frameset
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+</body><div>
+#errors
+(1,7): unexpected-close-tag
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+body
+#document
+| <div>
+
+#data
+<table><tr><div>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,16): unexpected-start-tag-implies-table-voodoo
+(1,16): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+</tr><td>
+#errors
+(1,5): unexpected-end-tag
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+</tbody></tfoot></thead><td>
+#errors
+(1,8): unexpected-end-tag
+(1,16): unexpected-end-tag
+(1,24): unexpected-end-tag
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<table><tr><div><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,16): foster-parenting-start-tag
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<caption><col><colgroup><tbody><tfoot><thead><tr>
+#errors
+(1,9): unexpected-start-tag
+(1,14): unexpected-start-tag
+(1,24): unexpected-start-tag
+(1,31): unexpected-start-tag
+(1,38): unexpected-start-tag
+(1,45): unexpected-start-tag
+#document-fragment
+tbody
+#document
+| <tr>
+
+#data
+<table><tbody></thead>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,22): unexpected-end-tag-in-table-body
+(1,22): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+
+#data
+</table><tr>
+#errors
+(1,8): unexpected-end-tag
+#document-fragment
+tbody
+#document
+| <tr>
+
+#data
+<table><tbody></body></caption></col></colgroup></html></td></th></tr>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,21): unexpected-end-tag-in-table-body
+(1,31): unexpected-end-tag-in-table-body
+(1,37): unexpected-end-tag-in-table-body
+(1,48): unexpected-end-tag-in-table-body
+(1,55): unexpected-end-tag-in-table-body
+(1,60): unexpected-end-tag-in-table-body
+(1,65): unexpected-end-tag-in-table-body
+(1,70): unexpected-end-tag-in-table-body
+(1,70): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+
+#data
+<table><tbody></div>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): unexpected-end-tag-implies-table-voodoo
+(1,20): end-tag-too-early
+(1,20): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+
+#data
+<table><table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,14): unexpected-start-tag-implies-end-tag
+(1,14): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|     <table>
+
+#data
+<table></body></caption></col></colgroup></html></tbody></td></tfoot></th></thead></tr>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,14): unexpected-end-tag
+(1,24): unexpected-end-tag
+(1,30): unexpected-end-tag
+(1,41): unexpected-end-tag
+(1,48): unexpected-end-tag
+(1,56): unexpected-end-tag
+(1,61): unexpected-end-tag
+(1,69): unexpected-end-tag
+(1,74): unexpected-end-tag
+(1,82): unexpected-end-tag
+(1,87): unexpected-end-tag
+(1,87): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+
+#data
+</table><tr>
+#errors
+(1,8): unexpected-end-tag
+#document-fragment
+table
+#document
+| <tbody>
+|   <tr>
+
+#data
+<body></body></html>
+#errors
+(1,20): unexpected-end-tag-after-body-innerhtml
+#document-fragment
+html
+#document
+| <head>
+| <body>
+
+#data
+<html><frameset></frameset></html> 
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+|   " "
+
+#data
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html></html>
+#errors
+(1,50): unknown-doctype element.
+#document
+| <!DOCTYPE html "-//W3C//DTD HTML 4.01//EN" "">
+| <html>
+|   <head>
+|   <body>
+
+#data
+<param><frameset></frameset>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,17): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<source><frameset></frameset>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,18): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<track><frameset></frameset>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,17): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+</html><frameset></frameset>
+#errors
+(1,7): expected-doctype-but-got-end-tag
+(1,17): expected-eof-but-got-start-tag
+(1,17): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+</body><frameset></frameset>
+#errors
+(1,7): expected-doctype-but-got-end-tag
+(1,17): unexpected-start-tag-after-body
+(1,17): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests7.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests7.dat
new file mode 100644
index 0000000000..f9471b9a34
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests7.dat
@@ -0,0 +1,402 @@
+#data
+<!doctype html><body><title>X</title>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <title>
+|       "X"
+
+#data
+<!doctype html><table><title>X</title></table>
+#errors
+(1,29): unexpected-start-tag-implies-table-voodoo
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <title>
+|       "X"
+|     <table>
+
+#data
+<!doctype html><head></head><title>X</title>
+#errors
+(1,35): unexpected-start-tag-out-of-my-head
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "X"
+|   <body>
+
+#data
+<!doctype html></head><title>X</title>
+#errors
+(1,29): unexpected-start-tag-out-of-my-head
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|     <title>
+|       "X"
+|   <body>
+
+#data
+<!doctype html><table><meta></table>
+#errors
+(1,28): unexpected-start-tag-implies-table-voodoo
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <meta>
+|     <table>
+
+#data
+<!doctype html><table>X<tr><td><table> <meta></table></table>
+#errors
+(1,45): unexpected-start-tag-implies-table-voodoo
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <meta>
+|             <table>
+|               " "
+
+#data
+<!doctype html><html> <head>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!doctype html> <head>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!doctype html><table><style> <tr>x </style> </table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <style>
+|         " <tr>x "
+|       " "
+
+#data
+<!doctype html><table><TBODY><script> <tr>x </script> </table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <script>
+|           " <tr>x "
+|         " "
+
+#data
+<!doctype html><p><applet><p>X</p></applet>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <applet>
+|         <p>
+|           "X"
+
+#data
+<!doctype html><listing>
+X</listing>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <listing>
+|       "X"
+
+#data
+<!doctype html><select><input>X
+#errors
+(1,30): unexpected-input-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <input>
+|     "X"
+
+#data
+<!doctype html><select><select>X
+#errors
+(1,31): unexpected-select-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     "X"
+
+#data
+<!doctype html><table><input type=hidDEN></table>
+#errors
+(1,41): unexpected-hidden-input-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <input>
+|         type="hidDEN"
+
+#data
+<!doctype html><table>X<input type=hidDEN></table>
+#errors
+(1,23): foster-parenting-character
+(1,42): unexpected-hidden-input-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     "X"
+|     <table>
+|       <input>
+|         type="hidDEN"
+
+#data
+<!doctype html><table>  <input type=hidDEN></table>
+#errors
+(1,43): unexpected-hidden-input-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       "  "
+|       <input>
+|         type="hidDEN"
+
+#data
+<!doctype html><table>  <input type='hidDEN'></table>
+#errors
+(1,45): unexpected-hidden-input-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       "  "
+|       <input>
+|         type="hidDEN"
+
+#data
+<!doctype html><table><input type=" hidden"><input type=hidDEN></table>
+#errors
+(1,44): unexpected-start-tag-implies-table-voodoo
+(1,63): unexpected-hidden-input-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <input>
+|       type=" hidden"
+|     <table>
+|       <input>
+|         type="hidDEN"
+
+#data
+<!doctype html><table><select>X<tr>
+#errors
+(1,30): unexpected-start-tag-implies-table-voodoo
+(1,35): unexpected-table-element-start-tag-in-select-in-table
+(1,35): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       "X"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!doctype html><select>X</select>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       "X"
+
+#data
+<!DOCTYPE hTmL><html></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<!DOCTYPE HTML><html></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+
+#data
+<body>X</body></body>
+#errors
+(1,21): unexpected-end-tag-after-body
+#document-fragment
+html
+#document
+| <head>
+| <body>
+|   "X"
+
+#data
+<div><p>a</x> b
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,13): unexpected-end-tag
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <p>
+|         "a b"
+
+#data
+<table><tr><td><code></code> </table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <code>
+|             " "
+
+#data
+<table><b><tr><td>aaa</td></tr>bbb</table>ccc
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,10): foster-parenting-start-tag
+(1,32): foster-parenting-character
+(1,33): foster-parenting-character
+(1,34): foster-parenting-character
+(1,45): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|     <b>
+|       "bbb"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "aaa"
+|     <b>
+|       "ccc"
+
+#data
+A<table><tr> B</tr> B</table>
+#errors
+(1,1): expected-doctype-but-got-chars
+(1,13): foster-parenting-character
+(1,14): foster-parenting-character
+(1,20): foster-parenting-character
+(1,21): foster-parenting-character
+#document
+| <html>
+|   <head>
+|   <body>
+|     "A B B"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+A<table><tr> B</tr> </em>C</table>
+#errors
+(1,1): expected-doctype-but-got-chars
+(1,13): foster-parenting-character
+(1,14): foster-parenting-character
+(1,20): foster-parenting-character
+(1,25): unexpected-end-tag
+(1,26): foster-parenting-character
+#document
+| <html>
+|   <head>
+|   <body>
+|     "A BC"
+|     <table>
+|       <tbody>
+|         <tr>
+|         " "
+
+#data
+<select><keygen>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,16): unexpected-input-in-select
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|     <keygen>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests8.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests8.dat
new file mode 100644
index 0000000000..93289f39c5
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests8.dat
@@ -0,0 +1,149 @@
+#data
+<div>
+<div></div>
+</span>x
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(3,7): unexpected-end-tag
+(3,8): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "
+"
+|       <div>
+|       "
+x"
+
+#data
+<div>x<div></div>
+</span>x
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(2,7): unexpected-end-tag
+(2,8): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "x"
+|       <div>
+|       "
+x"
+
+#data
+<div>x<div></div>x</span>x
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,25): unexpected-end-tag
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "x"
+|       <div>
+|       "xx"
+
+#data
+<div>x<div></div>y</span>z
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,25): unexpected-end-tag
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "x"
+|       <div>
+|       "yz"
+
+#data
+<table><div>x<div></div>x</span>x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,12): foster-parenting-start-tag
+(1,13): foster-parenting-character
+(1,18): foster-parenting-start-tag
+(1,24): foster-parenting-end-tag
+(1,25): foster-parenting-start-tag
+(1,32): foster-parenting-end-tag
+(1,32): unexpected-end-tag
+(1,33): foster-parenting-character
+(1,33): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "x"
+|       <div>
+|       "xx"
+|     <table>
+
+#data
+x<table>x
+#errors
+(1,1): expected-doctype-but-got-chars
+(1,9): foster-parenting-character
+#document
+| <html>
+|   <head>
+|   <body>
+|     "xx"
+|     <table>
+
+#data
+x<table><table>x
+#errors
+(1,1): expected-doctype-but-got-chars
+(1,15): unexpected-start-tag-implies-end-tag
+(1,16): foster-parenting-character
+#document
+| <html>
+|   <head>
+|   <body>
+|     "x"
+|     <table>
+|     "x"
+|     <table>
+
+#data
+<b>a<div></div><div></b>y
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,24): adoption-agency-1.3
+(1,25): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|       "a"
+|       <div>
+|     <div>
+|       <b>
+|       "y"
+
+#data
+<a><div><p></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,15): adoption-agency-1.3
+(1,15): adoption-agency-1.3
+(1,15): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <div>
+|       <a>
+|       <p>
+|         <a>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests9.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests9.dat
new file mode 100644
index 0000000000..40651a0613
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests9.dat
@@ -0,0 +1,473 @@
+#data
+<!DOCTYPE html><math></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+
+#data
+<!DOCTYPE html><body><math></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+
+#data
+<!DOCTYPE html><math><mi>
+#errors
+(1,25) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+
+#data
+<!DOCTYPE html><math><annotation-xml><svg><u>
+#errors
+(1,45) unexpected-html-element-in-foreign-content
+(1,45) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math annotation-xml>
+|         <svg svg>
+|     <u>
+
+#data
+<!DOCTYPE html><body><select><math></math></select>
+#errors
+(1,35) unexpected-start-tag-in-select
+(1,42) unexpected-end-tag-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+
+#data
+<!DOCTYPE html><body><select><option><math></math></option></select>
+#errors
+(1,43) unexpected-start-tag-in-select
+(1,50) unexpected-end-tag-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+
+#data
+<!DOCTYPE html><body><table><math></math></table>
+#errors
+(1,34) unexpected-start-tag-implies-table-voodoo
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><math><mi>foo</mi></math></table>
+#errors
+(1,34) foster-parenting-start-token
+(1,39) foster-parenting-character
+(1,40) foster-parenting-character
+(1,41) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><math><mi>foo</mi><mi>bar</mi></math></table>
+#errors
+(1,34) foster-parenting-start-tag
+(1,39) foster-parenting-character
+(1,40) foster-parenting-character
+(1,41) foster-parenting-character
+(1,51) foster-parenting-character
+(1,52) foster-parenting-character
+(1,53) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <table>
+
+#data
+<!DOCTYPE html><body><table><tbody><math><mi>foo</mi><mi>bar</mi></math></tbody></table>
+#errors
+(1,41) foster-parenting-start-tag
+(1,46) foster-parenting-character
+(1,47) foster-parenting-character
+(1,48) foster-parenting-character
+(1,58) foster-parenting-character
+(1,59) foster-parenting-character
+(1,60) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <table>
+|       <tbody>
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><math><mi>foo</mi><mi>bar</mi></math></tr></tbody></table>
+#errors
+(1,45) foster-parenting-start-tag
+(1,50) foster-parenting-character
+(1,51) foster-parenting-character
+(1,52) foster-parenting-character
+(1,62) foster-parenting-character
+(1,63) foster-parenting-character
+(1,64) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><td><math><mi>foo</mi><mi>bar</mi></math></td></tr></tbody></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <math math>
+|               <math mi>
+|                 "foo"
+|               <math mi>
+|                 "bar"
+
+#data
+<!DOCTYPE html><body><table><tbody><tr><td><math><mi>foo</mi><mi>bar</mi></math><p>baz</td></tr></tbody></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <math math>
+|               <math mi>
+|                 "foo"
+|               <math mi>
+|                 "bar"
+|             <p>
+|               "baz"
+
+#data
+<!DOCTYPE html><body><table><caption><math><mi>foo</mi><mi>bar</mi></math><p>baz</caption></table>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <math math>
+|           <math mi>
+|             "foo"
+|           <math mi>
+|             "bar"
+|         <p>
+|           "baz"
+
+#data
+<!DOCTYPE html><body><table><caption><math><mi>foo</mi><mi>bar</mi><p>baz</table><p>quux
+#errors
+(1,70) unexpected-html-element-in-foreign-content
+(1,81) XXX-undefined-error
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <math math>
+|           <math mi>
+|             "foo"
+|           <math mi>
+|             "bar"
+|         <p>
+|           "baz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><caption><math><mi>foo</mi><mi>bar</mi>baz</table><p>quux
+#errors
+(1,78) unexpected-end-tag
+(1,78) expected-one-end-tag-but-got-another
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <caption>
+|         <math math>
+|           <math mi>
+|             "foo"
+|           <math mi>
+|             "bar"
+|           "baz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><colgroup><math><mi>foo</mi><mi>bar</mi><p>baz</table><p>quux
+#errors
+(1,44) foster-parenting-start-tag
+(1,49) foster-parenting-character
+(1,50) foster-parenting-character
+(1,51) foster-parenting-character
+(1,61) foster-parenting-character
+(1,62) foster-parenting-character
+(1,63) foster-parenting-character
+(1,71) unexpected-html-element-in-foreign-content
+(1,71) foster-parenting-start-tag
+(1,63) foster-parenting-character
+(1,63) foster-parenting-character
+(1,63) foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <p>
+|       "baz"
+|     <table>
+|       <colgroup>
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><tr><td><select><math><mi>foo</mi><mi>bar</mi><p>baz</table><p>quux
+#errors
+(1,50) unexpected-start-tag-in-select
+(1,54) unexpected-start-tag-in-select
+(1,62) unexpected-end-tag-in-select
+(1,66) unexpected-start-tag-in-select
+(1,74) unexpected-end-tag-in-select
+(1,77) unexpected-start-tag-in-select
+(1,88) unexpected-table-element-end-tag-in-select-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             <select>
+|               "foobarbaz"
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body><table><select><math><mi>foo</mi><mi>bar</mi><p>baz</table><p>quux
+#errors
+(1,36) unexpected-start-tag-implies-table-voodoo
+(1,42) unexpected-start-tag-in-select
+(1,46) unexpected-start-tag-in-select
+(1,54) unexpected-end-tag-in-select
+(1,58) unexpected-start-tag-in-select
+(1,66) unexpected-end-tag-in-select
+(1,69) unexpected-start-tag-in-select
+(1,80) unexpected-table-element-end-tag-in-select-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       "foobarbaz"
+|     <table>
+|     <p>
+|       "quux"
+
+#data
+<!DOCTYPE html><body></body></html><math><mi>foo</mi><mi>bar</mi><p>baz
+#errors
+(1,41) expected-eof-but-got-start-tag
+(1,68) unexpected-html-element-in-foreign-content
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <p>
+|       "baz"
+
+#data
+<!DOCTYPE html><body></body><math><mi>foo</mi><mi>bar</mi><p>baz
+#errors
+(1,34) unexpected-start-tag-after-body
+(1,61) unexpected-html-element-in-foreign-content
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mi>
+|         "foo"
+|       <math mi>
+|         "bar"
+|     <p>
+|       "baz"
+
+#data
+<!DOCTYPE html><frameset><math><mi></mi><mi></mi><p><span>
+#errors
+(1,31) unexpected-start-tag-in-frameset
+(1,35) unexpected-start-tag-in-frameset
+(1,40) unexpected-end-tag-in-frameset
+(1,44) unexpected-start-tag-in-frameset
+(1,49) unexpected-end-tag-in-frameset
+(1,52) unexpected-start-tag-in-frameset
+(1,58) unexpected-start-tag-in-frameset
+(1,58) eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><frameset></frameset><math><mi></mi><mi></mi><p><span>
+#errors
+(1,42) unexpected-start-tag-after-frameset
+(1,46) unexpected-start-tag-after-frameset
+(1,51) unexpected-end-tag-after-frameset
+(1,55) unexpected-start-tag-after-frameset
+(1,60) unexpected-end-tag-after-frameset
+(1,63) unexpected-start-tag-after-frameset
+(1,69) unexpected-start-tag-after-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!DOCTYPE html><body xlink:href=foo><math xlink:href=foo></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     <math math>
+|       xlink href="foo"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><math><mi xml:lang=en xlink:href=foo></mi></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <math math>
+|       <math mi>
+|         xlink href="foo"
+|         xml lang="en"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><math><mi xml:lang=en xlink:href=foo /></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <math math>
+|       <math mi>
+|         xlink href="foo"
+|         xml lang="en"
+
+#data
+<!DOCTYPE html><body xlink:href=foo xml:lang=en><math><mi xml:lang=en xlink:href=foo />bar</math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     xlink:href="foo"
+|     xml:lang="en"
+|     <math math>
+|       <math mi>
+|         xlink href="foo"
+|         xml lang="en"
+|       "bar"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests_innerHTML_1.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests_innerHTML_1.dat
new file mode 100644
index 0000000000..5ede639bcc
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tests_innerHTML_1.dat
@@ -0,0 +1,902 @@
+#data
+<body><span>
+#errors
+(1,6): unexpected-start-tag
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+body
+#document
+| <span>
+
+#data
+<span><body>
+#errors
+(1,12): unexpected-start-tag
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+body
+#document
+| <span>
+
+#data
+<span><body>
+#errors
+(1,12): unexpected-start-tag
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+div
+#document
+| <span>
+
+#data
+<body><span>
+#errors
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+html
+#document
+| <head>
+| <body>
+|   <span>
+
+#data
+<frameset><span>
+#errors
+(1,10): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+body
+#document
+| <span>
+
+#data
+<span><frameset>
+#errors
+(1,16): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+body
+#document
+| <span>
+
+#data
+<span><frameset>
+#errors
+(1,16): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+div
+#document
+| <span>
+
+#data
+<frameset><span>
+#errors
+(1,16): unexpected-start-tag-in-frameset
+(1,16): eof-in-frameset
+#document-fragment
+html
+#document
+| <head>
+| <frameset>
+
+#data
+<table><tr>
+#errors
+(1,7): unexpected-start-tag
+#document-fragment
+table
+#document
+| <tbody>
+|   <tr>
+
+#data
+</table><tr>
+#errors
+(1,8): unexpected-end-tag
+#document-fragment
+table
+#document
+| <tbody>
+|   <tr>
+
+#data
+<a>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,3): eof-in-table
+#document-fragment
+table
+#document
+| <a>
+
+#data
+<a>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,3): eof-in-table
+#document-fragment
+table
+#document
+| <a>
+
+#data
+<a><caption>a
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,13): expected-closing-tag-but-got-eof
+#document-fragment
+table
+#document
+| <a>
+| <caption>
+|   "a"
+
+#data
+<a><colgroup><col>
+#errors
+(1,3): foster-parenting-start-token
+(1,18): expected-closing-tag-but-got-eof
+#document-fragment
+table
+#document
+| <a>
+| <colgroup>
+|   <col>
+
+#data
+<a><tbody><tr>
+#errors
+(1,3): foster-parenting-start-tag
+#document-fragment
+table
+#document
+| <a>
+| <tbody>
+|   <tr>
+
+#data
+<a><tfoot><tr>
+#errors
+(1,3): foster-parenting-start-tag
+#document-fragment
+table
+#document
+| <a>
+| <tfoot>
+|   <tr>
+
+#data
+<a><thead><tr>
+#errors
+(1,3): foster-parenting-start-tag
+#document-fragment
+table
+#document
+| <a>
+| <thead>
+|   <tr>
+
+#data
+<a><tr>
+#errors
+(1,3): foster-parenting-start-tag
+#document-fragment
+table
+#document
+| <a>
+| <tbody>
+|   <tr>
+
+#data
+<a><th>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,7): unexpected-cell-in-table-body
+#document-fragment
+table
+#document
+| <a>
+| <tbody>
+|   <tr>
+|     <th>
+
+#data
+<a><td>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,7): unexpected-cell-in-table-body
+#document-fragment
+table
+#document
+| <a>
+| <tbody>
+|   <tr>
+|     <td>
+
+#data
+<table></table><tbody>
+#errors
+(1,22): unexpected-start-tag
+#document-fragment
+caption
+#document
+| <table>
+
+#data
+</table><span>
+#errors
+(1,8): unexpected-end-tag
+(1,14): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+
+#data
+<span></table>
+#errors
+(1,14): unexpected-end-tag
+(1,14): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+
+#data
+</caption><span>
+#errors
+(1,10): XXX-undefined-error
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+
+#data
+<span></caption><span>
+#errors
+(1,16): XXX-undefined-error
+(1,22): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><caption><span>
+#errors
+(1,15): unexpected-start-tag
+(1,21): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><col><span>
+#errors
+(1,11): unexpected-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><colgroup><span>
+#errors
+(1,16): unexpected-start-tag
+(1,22): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><html><span>
+#errors
+(1,12): non-html-root
+(1,18): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><tbody><span>
+#errors
+(1,13): unexpected-start-tag
+(1,19): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><td><span>
+#errors
+(1,10): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><tfoot><span>
+#errors
+(1,13): unexpected-start-tag
+(1,19): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><thead><span>
+#errors
+(1,13): unexpected-start-tag
+(1,19): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><th><span>
+#errors
+(1,10): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span><tr><span>
+#errors
+(1,10): unexpected-start-tag
+(1,16): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+<span></table><span>
+#errors
+(1,14): unexpected-end-tag
+(1,20): expected-closing-tag-but-got-eof
+#document-fragment
+caption
+#document
+| <span>
+|   <span>
+
+#data
+</colgroup><col>
+#errors
+(1,11): XXX-undefined-error
+#document-fragment
+colgroup
+#document
+| <col>
+
+#data
+<a><col>
+#errors
+(1,3): XXX-undefined-error
+#document-fragment
+colgroup
+#document
+| <col>
+
+#data
+<caption><a>
+#errors
+(1,9): XXX-undefined-error
+(1,12): unexpected-start-tag-implies-table-voodoo
+(1,12): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<col><a>
+#errors
+(1,5): XXX-undefined-error
+(1,8): unexpected-start-tag-implies-table-voodoo
+(1,8): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<colgroup><a>
+#errors
+(1,10): XXX-undefined-error
+(1,13): unexpected-start-tag-implies-table-voodoo
+(1,13): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<tbody><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,10): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<tfoot><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,10): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<thead><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,10): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+</table><a>
+#errors
+(1,8): XXX-undefined-error
+(1,11): unexpected-start-tag-implies-table-voodoo
+(1,11): eof-in-table
+#document-fragment
+tbody
+#document
+| <a>
+
+#data
+<a><tr>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+#document-fragment
+tbody
+#document
+| <a>
+| <tr>
+
+#data
+<a><td>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,7): unexpected-cell-in-table-body
+#document-fragment
+tbody
+#document
+| <a>
+| <tr>
+|   <td>
+
+#data
+<a><td>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,7): unexpected-cell-in-table-body
+#document-fragment
+tbody
+#document
+| <a>
+| <tr>
+|   <td>
+
+#data
+<a><td>
+#errors
+(1,3): unexpected-start-tag-implies-table-voodoo
+(1,7): unexpected-cell-in-table-body
+#document-fragment
+tbody
+#document
+| <a>
+| <tr>
+|   <td>
+
+#data
+<td><table><tbody><a><tr>
+#errors
+(1,4): unexpected-cell-in-table-body
+(1,21): unexpected-start-tag-implies-table-voodoo
+(1,25): eof-in-table
+#document-fragment
+tbody
+#document
+| <tr>
+|   <td>
+|     <a>
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+</tr><td>
+#errors
+(1,5): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<td><table><a><tr></tr><tr>
+#errors
+(1,14): unexpected-start-tag-implies-table-voodoo
+(1,27): eof-in-table
+#document-fragment
+tr
+#document
+| <td>
+|   <a>
+|   <table>
+|     <tbody>
+|       <tr>
+|       <tr>
+
+#data
+<caption><td>
+#errors
+(1,9): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<col><td>
+#errors
+(1,5): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<colgroup><td>
+#errors
+(1,10): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<tbody><td>
+#errors
+(1,7): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<tfoot><td>
+#errors
+(1,7): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<thead><td>
+#errors
+(1,7): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<tr><td>
+#errors
+(1,4): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+</table><td>
+#errors
+(1,8): XXX-undefined-error
+#document-fragment
+tr
+#document
+| <td>
+
+#data
+<td><table></table><td>
+#errors
+#document-fragment
+tr
+#document
+| <td>
+|   <table>
+| <td>
+
+#data
+<td><table></table><td>
+#errors
+#document-fragment
+tr
+#document
+| <td>
+|   <table>
+| <td>
+
+#data
+<caption><a>
+#errors
+(1,9): XXX-undefined-error
+(1,12): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<col><a>
+#errors
+(1,5): XXX-undefined-error
+(1,8): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<colgroup><a>
+#errors
+(1,10): XXX-undefined-error
+(1,13): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<tbody><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<tfoot><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<th><a>
+#errors
+(1,4): XXX-undefined-error
+(1,7): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<thead><a>
+#errors
+(1,7): XXX-undefined-error
+(1,10): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<tr><a>
+#errors
+(1,4): XXX-undefined-error
+(1,7): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</table><a>
+#errors
+(1,8): XXX-undefined-error
+(1,11): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</tbody><a>
+#errors
+(1,8): XXX-undefined-error
+(1,11): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</td><a>
+#errors
+(1,5): unexpected-end-tag
+(1,8): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</tfoot><a>
+#errors
+(1,8): XXX-undefined-error
+(1,11): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</thead><a>
+#errors
+(1,8): XXX-undefined-error
+(1,11): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</th><a>
+#errors
+(1,5): unexpected-end-tag
+(1,8): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+</tr><a>
+#errors
+(1,5): XXX-undefined-error
+(1,8): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <a>
+
+#data
+<table><td><td>
+#errors
+(1,11): unexpected-cell-in-table-body
+(1,15): expected-closing-tag-but-got-eof
+#document-fragment
+td
+#document
+| <table>
+|   <tbody>
+|     <tr>
+|       <td>
+|       <td>
+
+#data
+</select><option>
+#errors
+(1,9): XXX-undefined-error
+(1,17): eof-in-select
+#document-fragment
+select
+#document
+| <option>
+
+#data
+<input><option>
+#errors
+(1,7): unexpected-input-in-select
+(1,15): eof-in-select
+#document-fragment
+select
+#document
+| <option>
+
+#data
+<keygen><option>
+#errors
+(1,8): unexpected-input-in-select
+(1,16): eof-in-select
+#document-fragment
+select
+#document
+| <option>
+
+#data
+<textarea><option>
+#errors
+(1,10): unexpected-input-in-select
+(1,18): eof-in-select
+#document-fragment
+select
+#document
+| <option>
+
+#data
+</html><!--abc-->
+#errors
+(1,7): unexpected-end-tag-after-body-innerhtml
+#document-fragment
+html
+#document
+| <head>
+| <body>
+| <!-- abc -->
+
+#data
+</frameset><frame>
+#errors
+(1,11): unexpected-frameset-in-frameset-innerhtml
+#document-fragment
+frameset
+#document
+| <frame>
+
+#data
+#errors
+#document-fragment
+html
+#document
+| <head>
+| <body>
+
+#data
+<head></head><script></script>
+#errors
+21: “script” element between “head” and “body”.
+#document-fragment
+html
+#document
+| <head>
+|   <script>
+| <body>
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tricky01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tricky01.dat
new file mode 100644
index 0000000000..f7065214ea
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/tricky01.dat
@@ -0,0 +1,334 @@
+#data
+<b><p>Bold </b> Not bold</p>
+Also not bold.
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,15): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <b>
+|     <p>
+|       <b>
+|         "Bold "
+|       " Not bold"
+|     "
+Also not bold."
+
+#data
+<html>
+<font color=red><i>Italic and Red<p>Italic and Red </font> Just italic.</p> Italic only.</i> Plain
+<p>I should not be red. <font color=red>Red. <i>Italic and red.</p>
+<p>Italic and red. </i> Red.</font> I should not be red.</p>
+<b>Bold <i>Bold and italic</b> Only Italic </i> Plain
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(2,58): adoption-agency-1.3
+(3,67): unexpected-end-tag
+(4,23): adoption-agency-1.3
+(4,35): adoption-agency-1.3
+(5,30): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|       color="red"
+|       <i>
+|         "Italic and Red"
+|     <i>
+|       <p>
+|         <font>
+|           color="red"
+|           "Italic and Red "
+|         " Just italic."
+|       " Italic only."
+|     " Plain
+"
+|     <p>
+|       "I should not be red. "
+|       <font>
+|         color="red"
+|         "Red. "
+|         <i>
+|           "Italic and red."
+|     <font>
+|       color="red"
+|       <i>
+|         "
+"
+|     <p>
+|       <font>
+|         color="red"
+|         <i>
+|           "Italic and red. "
+|         " Red."
+|       " I should not be red."
+|     "
+"
+|     <b>
+|       "Bold "
+|       <i>
+|         "Bold and italic"
+|     <i>
+|       " Only Italic "
+|     " Plain"
+
+#data
+<html><body>
+<p><font size="7">First paragraph.</p>
+<p>Second paragraph.</p></font>
+<b><p><i>Bold and Italic</b> Italic</p>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(2,38): unexpected-end-tag
+(4,28): adoption-agency-1.3
+(4,28): adoption-agency-1.3
+(4,39): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     "
+"
+|     <p>
+|       <font>
+|         size="7"
+|         "First paragraph."
+|     <font>
+|       size="7"
+|       "
+"
+|       <p>
+|         "Second paragraph."
+|     "
+"
+|     <b>
+|     <p>
+|       <b>
+|         <i>
+|           "Bold and Italic"
+|       <i>
+|         " Italic"
+
+#data
+<html>
+<dl>
+<dt><b>Boo
+<dd>Goo?
+</dl>
+</html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(4,4): end-tag-too-early
+(5,5): end-tag-too-early
+(6,7): expected-one-end-tag-but-got-another
+#document
+| <html>
+|   <head>
+|   <body>
+|     <dl>
+|       "
+"
+|       <dt>
+|         <b>
+|           "Boo
+"
+|       <dd>
+|         <b>
+|           "Goo?
+"
+|     <b>
+|       "
+"
+
+#data
+<html><body>
+<label><a><div>Hello<div>World</div></a></label>  
+</body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(2,40): adoption-agency-1.3
+(2,48): unexpected-end-tag
+(3,7): expected-one-end-tag-but-got-another
+#document
+| <html>
+|   <head>
+|   <body>
+|     "
+"
+|     <label>
+|       <a>
+|       <div>
+|         <a>
+|           "Hello"
+|           <div>
+|             "World"
+|         "  
+"
+
+#data
+<table><center> <font>a</center> <img> <tr><td> </td> </tr> </table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,15): foster-parenting-start-tag
+(1,16): foster-parenting-character
+(1,22): foster-parenting-start-tag
+(1,23): foster-parenting-character
+(1,32): foster-parenting-end-tag
+(1,32): end-tag-too-early
+(1,33): foster-parenting-character
+(1,38): foster-parenting-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <center>
+|       " "
+|       <font>
+|         "a"
+|     <font>
+|       <img>
+|       " "
+|     <table>
+|       " "
+|       <tbody>
+|         <tr>
+|           <td>
+|             " "
+|           " "
+|         " "
+
+#data
+<table><tr><p><a><p>You should see this text.
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,14): unexpected-start-tag-implies-table-voodoo
+(1,17): unexpected-start-tag-implies-table-voodoo
+(1,20): unexpected-start-tag-implies-table-voodoo
+(1,20): closing-non-current-p-element
+(1,21): foster-parenting-character
+(1,22): foster-parenting-character
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+(1,26): foster-parenting-character
+(1,27): foster-parenting-character
+(1,28): foster-parenting-character
+(1,29): foster-parenting-character
+(1,30): foster-parenting-character
+(1,31): foster-parenting-character
+(1,32): foster-parenting-character
+(1,33): foster-parenting-character
+(1,34): foster-parenting-character
+(1,35): foster-parenting-character
+(1,36): foster-parenting-character
+(1,37): foster-parenting-character
+(1,38): foster-parenting-character
+(1,39): foster-parenting-character
+(1,40): foster-parenting-character
+(1,41): foster-parenting-character
+(1,42): foster-parenting-character
+(1,43): foster-parenting-character
+(1,44): foster-parenting-character
+(1,45): foster-parenting-character
+(1,45): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       <a>
+|     <p>
+|       <a>
+|         "You should see this text."
+|     <table>
+|       <tbody>
+|         <tr>
+
+#data
+<TABLE>
+<TR>
+<CENTER><CENTER><TD></TD></TR><TR>
+<FONT>
+<TABLE><tr></tr></TABLE>
+</P>
+<a></font><font></a>
+This page contains an insanely badly-nested tag sequence.
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(3,8): unexpected-start-tag-implies-table-voodoo
+(3,16): unexpected-start-tag-implies-table-voodoo
+(4,6): unexpected-start-tag-implies-table-voodoo
+(5,7): unexpected-start-tag-implies-end-tag
+(7,10): adoption-agency-1.3
+(7,20): adoption-agency-1.3
+(8,57): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <center>
+|       <center>
+|     <font>
+|       "
+"
+|     <table>
+|       "
+"
+|       <tbody>
+|         <tr>
+|           "
+"
+|           <td>
+|         <tr>
+|           "
+"
+|     <table>
+|       <tbody>
+|         <tr>
+|     <font>
+|       "
+"
+|       <p>
+|       "
+"
+|       <a>
+|     <a>
+|       <font>
+|     <font>
+|       "
+This page contains an insanely badly-nested tag sequence."
+
+#data
+<html>
+<body>
+<b><nobr><div>This text is in a div inside a nobr</nobr>More text that should not be in the nobr, i.e., the
+nobr should have closed the div inside it implicitly. </b><pre>A pre tag outside everything else.</pre>
+</body>
+</html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(3,56): adoption-agency-1.3
+(4,58): adoption-agency-1.3
+(5,7): expected-one-end-tag-but-got-another
+#document
+| <html>
+|   <head>
+|   <body>
+|     "
+"
+|     <b>
+|       <nobr>
+|     <div>
+|       <b>
+|         <nobr>
+|           "This text is in a div inside a nobr"
+|         "More text that should not be in the nobr, i.e., the
+nobr should have closed the div inside it implicitly. "
+|       <pre>
+|         "A pre tag outside everything else."
+|       "
+
+"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit01.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit01.dat
new file mode 100644
index 0000000000..c480accd95
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit01.dat
@@ -0,0 +1,705 @@
+#data
+Test
+#errors
+(1,4): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "Test"
+
+#data
+<div></div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+
+#data
+<div>Test</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "Test"
+
+#data
+<di
+#errors
+(1,3): eof-in-tag-name
+(1,3): expected-doctype-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<div>Hello</div>
+<script>
+console.log("PASS");
+</script>
+<div>Bye</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "Hello"
+|     "
+"
+|     <script>
+|       "
+console.log("PASS");
+"
+|     "
+"
+|     <div>
+|       "Bye"
+
+#data
+<div foo="bar">Hello</div>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       foo="bar"
+|       "Hello"
+
+#data
+<div>Hello</div>
+<script>
+console.log("FOO<span>BAR</span>BAZ");
+</script>
+<div>Bye</div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       "Hello"
+|     "
+"
+|     <script>
+|       "
+console.log("FOO<span>BAR</span>BAZ");
+"
+|     "
+"
+|     <div>
+|       "Bye"
+
+#data
+<foo bar="baz"></foo><potato quack="duck"></potato>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       bar="baz"
+|     <potato>
+|       quack="duck"
+
+#data
+<foo bar="baz"><potato quack="duck"></potato></foo>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       bar="baz"
+|       <potato>
+|         quack="duck"
+
+#data
+<foo></foo bar="baz"><potato></potato quack="duck">
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,21): attributes-in-end-tag
+(1,51): attributes-in-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|     <potato>
+
+#data
+</ tttt>
+#errors
+(1,2): expected-closing-tag-but-got-char
+(1,8): expected-doctype-but-got-eof
+#document
+| <!--  tttt -->
+| <html>
+|   <head>
+|   <body>
+
+#data
+<div FOO ><img><img></div>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       foo=""
+|       <img>
+|       <img>
+
+#data
+<p>Test</p<p>Test2</p>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,13): unexpected-end-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       "TestTest2"
+
+#data
+<rdar://problem/6869687>
+#errors
+(1,7): unexpected-character-after-solidus-in-tag
+(1,8): unexpected-character-after-solidus-in-tag
+(1,16): unexpected-character-after-solidus-in-tag
+(1,24): expected-doctype-but-got-start-tag
+(1,24): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <rdar:>
+|       6869687=""
+|       problem=""
+
+#data
+<A>test< /A>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,8): expected-tag-name
+(1,12): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|       "test< /A>"
+
+#data
+&lt;
+#errors
+(1,4): expected-doctype-but-got-chars
+#document
+| <html>
+|   <head>
+|   <body>
+|     "<"
+
+#data
+<body foo='bar'><body foo='baz' yo='mama'>
+#errors
+(1,16): expected-doctype-but-got-start-tag
+(1,42): unexpected-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     foo="bar"
+|     yo="mama"
+
+#data
+<body></br foo="bar"></body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): attributes-in-end-tag
+(1,21): unexpected-end-tag-treated-as
+#document
+| <html>
+|   <head>
+|   <body>
+|     <br>
+
+#data
+<bdy><br foo="bar"></body>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,26): expected-one-end-tag-but-got-another
+#document
+| <html>
+|   <head>
+|   <body>
+|     <bdy>
+|       <br>
+|         foo="bar"
+
+#data
+<body></body></br foo="bar">
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,28): attributes-in-end-tag
+(1,28): unexpected-end-tag-after-body
+(1,28): unexpected-end-tag-treated-as
+#document
+| <html>
+|   <head>
+|   <body>
+|     <br>
+
+#data
+<bdy></body><br foo="bar">
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,12): expected-one-end-tag-but-got-another
+(1,26): unexpected-start-tag-after-body
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <bdy>
+|       <br>
+|         foo="bar"
+
+#data
+<html><body></body></html><!-- Hi there -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+| <!--  Hi there  -->
+
+#data
+<html><body></body></html>x<!-- Hi there -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): expected-eof-but-got-char
+#document
+| <html>
+|   <head>
+|   <body>
+|     "x"
+|     <!--  Hi there  -->
+
+#data
+<html><body></body></html>x<!-- Hi there --></html><!-- Again -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): expected-eof-but-got-char
+#document
+| <html>
+|   <head>
+|   <body>
+|     "x"
+|     <!--  Hi there  -->
+| <!--  Again  -->
+
+#data
+<html><body></body></html>x<!-- Hi there --></body></html><!-- Again -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): expected-eof-but-got-char
+#document
+| <html>
+|   <head>
+|   <body>
+|     "x"
+|     <!--  Hi there  -->
+| <!--  Again  -->
+
+#data
+<html><body><ruby><div><rp>xx</rp></div></ruby></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): XXX-undefined-error
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <rp>
+|           "xx"
+
+#data
+<html><body><ruby><div><rt>xx</rt></div></ruby></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,27): XXX-undefined-error
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ruby>
+|       <div>
+|         <rt>
+|           "xx"
+
+#data
+<html><frameset><!--1--><noframes>A</noframes><!--2--></frameset><!--3--><noframes>B</noframes><!--4--></html><!--5--><noframes>C</noframes><!--6-->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <frameset>
+|     <!-- 1 -->
+|     <noframes>
+|       "A"
+|     <!-- 2 -->
+|   <!-- 3 -->
+|   <noframes>
+|     "B"
+|   <!-- 4 -->
+|   <noframes>
+|     "C"
+| <!-- 5 -->
+| <!-- 6 -->
+
+#data
+<select><option>A<select><option>B<select><option>C<select><option>D<select><option>E<select><option>F<select><option>G<select>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,25): unexpected-select-in-select
+(1,59): unexpected-select-in-select
+(1,93): unexpected-select-in-select
+(1,127): unexpected-select-in-select
+(1,127): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <select>
+|       <option>
+|         "A"
+|     <option>
+|       "B"
+|       <select>
+|         <option>
+|           "C"
+|     <option>
+|       "D"
+|       <select>
+|         <option>
+|           "E"
+|     <option>
+|       "F"
+|       <select>
+|         <option>
+|           "G"
+
+#data
+<dd><dd><dt><dt><dd><li><li>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <dd>
+|     <dd>
+|     <dt>
+|     <dt>
+|     <dd>
+|       <li>
+|       <li>
+
+#data
+<div><b></div><div><nobr>a<nobr>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,14): end-tag-too-early
+(1,32): unexpected-start-tag-implies-end-tag
+(1,32): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <b>
+|     <div>
+|       <b>
+|         <nobr>
+|           "a"
+|         <nobr>
+
+#data
+<head></head>
+<body></body>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   "
+"
+|   <body>
+
+#data
+<head></head> <style></style>ddd
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): unexpected-start-tag-out-of-my-head
+#document
+| <html>
+|   <head>
+|     <style>
+|   " "
+|   <body>
+|     "ddd"
+
+#data
+<kbd><table></kbd><col><select><tr>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,18): unexpected-end-tag-implies-table-voodoo
+(1,18): unexpected-end-tag
+(1,31): unexpected-start-tag-implies-table-voodoo
+(1,35): unexpected-table-element-start-tag-in-select-in-table
+(1,35): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     <kbd>
+|       <select>
+|       <table>
+|         <colgroup>
+|           <col>
+|         <tbody>
+|           <tr>
+
+#data
+<kbd><table></kbd><col><select><tr></table><div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,18): unexpected-end-tag-implies-table-voodoo
+(1,18): unexpected-end-tag
+(1,31): unexpected-start-tag-implies-table-voodoo
+(1,35): unexpected-table-element-start-tag-in-select-in-table
+(1,48): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <kbd>
+|       <select>
+|       <table>
+|         <colgroup>
+|           <col>
+|         <tbody>
+|           <tr>
+|       <div>
+
+#data
+<a><li><style></style><title></title></a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,41): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <li>
+|       <a>
+|         <style>
+|         <title>
+
+#data
+<font></p><p><meta><title></title></font>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,10): unexpected-end-tag
+(1,41): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <font>
+|       <p>
+|     <p>
+|       <font>
+|         <meta>
+|         <title>
+
+#data
+<a><center><title></title><a>
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,29): unexpected-start-tag-implies-end-tag
+(1,29): adoption-agency-1.3
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <a>
+|     <center>
+|       <a>
+|         <title>
+|       <a>
+
+#data
+<svg><title><div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg title>
+|         <div>
+
+#data
+<svg><title><rect><div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,23): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg title>
+|         <rect>
+|           <div>
+
+#data
+<svg><title><svg><div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,22): unexpected-html-element-in-foreign-content
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg title>
+|         <svg svg>
+|         <div>
+
+#data
+<img <="" FAIL>
+#errors
+(1,6): invalid-character-in-attribute-name
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <img>
+|       <=""
+|       fail=""
+
+#data
+<ul><li><div id='foo'/>A</li><li>B<div>C</div></li></ul>
+#errors
+(1,4): expected-doctype-but-got-start-tag
+(1,23): non-void-element-with-trailing-solidus
+(1,29): end-tag-too-early
+#document
+| <html>
+|   <head>
+|   <body>
+|     <ul>
+|       <li>
+|         <div>
+|           id="foo"
+|           "A"
+|       <li>
+|         "B"
+|         <div>
+|           "C"
+
+#data
+<svg><em><desc></em>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,9): unexpected-html-element-in-foreign-content
+(1,20): adoption-agency-1.3
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|     <em>
+|       <desc>
+
+#data
+<svg><tfoot></mi><td>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,17): unexpected-end-tag
+(1,17): unexpected-end-tag
+(1,21): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <svg svg>
+|       <svg tfoot>
+|         <svg td>
+
+#data
+<math><mrow><mrow><mn>1</mn></mrow><mi>a</mi></mrow></math>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <math math>
+|       <math mrow>
+|         <math mrow>
+|           <math mn>
+|             "1"
+|         <math mi>
+|           "a"
+
+#data
+<!doctype html><input type="hidden"><frameset>
+#errors
+(1,46): unexpected-start-tag
+(1,46): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <frameset>
+
+#data
+<!doctype html><input type="button"><frameset>
+#errors
+(1,46): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+|   <head>
+|   <body>
+|     <input>
+|       type="button"
diff --git a/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit02.dat b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit02.dat
new file mode 100644
index 0000000000..647fcfd41f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/html5lib_tree_construction/webkit02.dat
@@ -0,0 +1,116 @@
+#data
+<foo bar=qux/>
+#errors
+(1,14): expected-doctype-but-got-start-tag
+(1,14): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <foo>
+|       bar="qux/"
+
+#data
+<p id="status"><noscript><strong>A</strong></noscript><span>B</span></p>
+#errors
+(1,15): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <p>
+|       id="status"
+|       <noscript>
+|         "<strong>A</strong>"
+|       <span>
+|         "B"
+
+#data
+<div><sarcasm><div></div></sarcasm></div>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+#document
+| <html>
+|   <head>
+|   <body>
+|     <div>
+|       <sarcasm>
+|         <div>
+
+#data
+<html><body><img src="" border="0" alt="><div>A</div></body></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,67): eof-in-attribute-value-double-quote
+#document
+| <html>
+|   <head>
+|   <body>
+
+#data
+<table><td></tbody>A
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,20): foster-parenting-character
+(1,20): eof-in-table
+#document
+| <html>
+|   <head>
+|   <body>
+|     "A"
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+
+#data
+<table><td></thead>A
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,19): XXX-undefined-error
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "A"
+
+#data
+<table><td></tfoot>A
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,19): XXX-undefined-error
+(1,20): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <tbody>
+|         <tr>
+|           <td>
+|             "A"
+
+#data
+<table><thead><td></tbody>A
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,18): unexpected-cell-in-table-body
+(1,26): XXX-undefined-error
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <html>
+|   <head>
+|   <body>
+|     <table>
+|       <thead>
+|         <tr>
+|           <td>
+|             "A"
diff --git a/parser/htmlparser/tests/mochitest/invalidchar.xml b/parser/htmlparser/tests/mochitest/invalidchar.xml
new file mode 100644
index 0000000000..d4ad7f0571
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/invalidchar.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<root>
+ <fail> This is an invalid byte in UTF-8: � </fail>
+</root>
diff --git a/parser/htmlparser/tests/mochitest/mochitest.toml b/parser/htmlparser/tests/mochitest/mochitest.toml
new file mode 100644
index 0000000000..ac416a31ba
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/mochitest.toml
@@ -0,0 +1,237 @@
+[DEFAULT]
+support-files = [
+  "bug_502091_iframe.html",
+  "file_bug102699.sjs",
+  "file_bug534293-slow.sjs",
+  "file_bug534293.sjs",
+  "file_bug543062.sjs",
+  "file_bug594730-1.html",
+  "file_bug594730-2.html",
+  "file_bug594730-3.html",
+  "file_bug594730-4.html",
+  "file_bug594730-5.html",
+  "file_bug594730-6.html",
+  "file_bug594730-7.html",
+  "file_bug594730-8.html",
+  "file_bug594730-9.html",
+  "file_bug642908.sjs",
+  "file_bug655682.sjs",
+  "file_bug672453_http_unsupported.html",
+  "file_bug672453_http_unsupported.html^headers^",
+  "file_bug672453_late_meta.html",
+  "file_bug672453_meta_non_superset.html",
+  "file_bug672453_meta_restart.html",
+  "file_bug672453_meta_unsupported.html",
+  "file_bug672453_meta_utf16.html",
+  "file_bug688580.js",
+  "file_bug672453_not_declared.html",
+  "file_bug672453_meta_userdefined.html",
+  "file_bug672453_xml_decl.html",
+  "file_bug672453_meta_after_head.html",
+  "file_bug672453_meta_replacement.html",
+  "file_bug672453_http_replacement.html",
+  "file_bug672453_http_replacement.html^headers^",
+  "file_bug672453_enc_error.html",
+  "file_bug672453_enc_error_inherited.html",
+  "file_bug672453_meta_speculation_fail.html",
+  "file_bug672453_xml_speculation_fail.html",
+  "file_bug716579-16.html",
+  "file_bug716579-16.html^headers^",
+  "file_bug716579-16.xhtml",
+  "file_bug716579-16.xhtml^headers^",
+  "file_bug716579-8.html",
+  "file_bug716579-8.html^headers^",
+  "file_bug716579-8.xhtml",
+  "file_bug716579-8.xhtml^headers^",
+  "file_bug717180.html",
+  "file_img_picture_preload.html",
+  "file_img_picture_preload.sjs",
+  "html5_tree_construction_exceptions.js",
+  "invalidchar.xml",
+  "parser_datreader.js",
+  "parser_web_testrunner.js",
+  "dir_bug534293/file_bug534293.sjs",
+  "html5lib_tree_construction/adoption01.dat",
+  "html5lib_tree_construction/adoption02.dat",
+  "html5lib_tree_construction/comments01.dat",
+  "html5lib_tree_construction/doctype01.dat",
+  "html5lib_tree_construction/domjs-unsafe.dat",
+  "html5lib_tree_construction/entities01.dat",
+  "html5lib_tree_construction/entities02.dat",
+  "html5lib_tree_construction/foreign-fragment.dat",
+  "html5lib_tree_construction/html5test-com.dat",
+  "html5lib_tree_construction/inbody01.dat",
+  "html5lib_tree_construction/isindex.dat",
+  "html5lib_tree_construction/pending-spec-changes.dat",
+  "html5lib_tree_construction/pending-spec-changes-plain-text-unsafe.dat",
+  "html5lib_tree_construction/plain-text-unsafe.dat",
+  "html5lib_tree_construction/scriptdata01.dat",
+  "html5lib_tree_construction/tables01.dat",
+  "html5lib_tree_construction/template.dat",
+  "html5lib_tree_construction/tests10.dat",
+  "html5lib_tree_construction/tests11.dat",
+  "html5lib_tree_construction/tests12.dat",
+  "html5lib_tree_construction/tests14.dat",
+  "html5lib_tree_construction/tests15.dat",
+  "html5lib_tree_construction/tests16.dat",
+  "html5lib_tree_construction/tests17.dat",
+  "html5lib_tree_construction/tests18.dat",
+  "html5lib_tree_construction/tests19.dat",
+  "html5lib_tree_construction/tests1.dat",
+  "html5lib_tree_construction/tests20.dat",
+  "html5lib_tree_construction/tests21.dat",
+  "html5lib_tree_construction/tests22.dat",
+  "html5lib_tree_construction/tests23.dat",
+  "html5lib_tree_construction/tests24.dat",
+  "html5lib_tree_construction/tests25.dat",
+  "html5lib_tree_construction/tests26.dat",
+  "html5lib_tree_construction/tests2.dat",
+  "html5lib_tree_construction/tests3.dat",
+  "html5lib_tree_construction/tests4.dat",
+  "html5lib_tree_construction/tests5.dat",
+  "html5lib_tree_construction/tests6.dat",
+  "html5lib_tree_construction/tests7.dat",
+  "html5lib_tree_construction/tests8.dat",
+  "html5lib_tree_construction/tests9.dat",
+  "html5lib_tree_construction/tests_innerHTML_1.dat",
+  "html5lib_tree_construction/tricky01.dat",
+  "html5lib_tree_construction/webkit01.dat",
+  "html5lib_tree_construction/webkit02.dat",
+  "html5lib_tree_construction/main-element.dat",
+  "html5lib_tree_construction/ruby.dat",
+  "html5lib_tree_construction/scripted/adoption01.dat",
+  "html5lib_tree_construction/scripted/webkit01.dat",
+  "html5lib_tree_construction/scripted/ark.dat",
+  "blue.png",
+]
+
+["test_base_csp_img.html"]
+support-files = [
+  "blue.png",
+  "file_base_csp_img.sjs",
+]
+skip-if = [
+  "http3",
+  "http2",
+]
+
+["test_base_header_csp_img.html"]
+support-files = [
+  "blue.png",
+  "file_base_csp_img.sjs",
+  "test_base_header_csp_img.html^headers^",
+]
+skip-if = [
+  "http3",
+  "http2",
+]
+
+["test_bug102699.html"]
+
+["test_bug174351.html"]
+
+["test_bug213517.html"]
+
+["test_bug339350.xhtml"]
+
+["test_bug358797.html"]
+
+["test_bug396568.html"]
+
+["test_bug418464.html"]
+
+["test_bug460437.xhtml"]
+skip-if = [
+  "xorigin && debug",
+  "http3",
+  "http2",
+]
+
+["test_bug502091.html"]
+
+["test_bug543062.html"]
+
+["test_bug552938-2.html"]
+
+["test_bug552938.html"]
+
+["test_bug563322.xhtml"]
+
+["test_bug566879.html"]
+
+["test_bug594730.html"]
+
+["test_bug613662.html"]
+
+["test_bug613662.xhtml"]
+skip-if = ["xorigin && debug"]
+
+["test_bug639362.html"]
+
+["test_bug642908.html"]
+
+["test_bug645115.html"]
+
+["test_bug655682.html"]
+skip-if = [
+  "http3",
+  "http2",
+]
+
+["test_bug667533.html"]
+
+["test_bug672453.html"]
+skip-if = [
+  "http3",
+  "http2",
+]
+
+["test_bug688580.html"]
+
+["test_bug688580.xhtml"]
+
+["test_bug709083.html"]
+
+["test_bug715112.html"]
+
+["test_bug715739.html"]
+
+["test_bug716579.html"]
+
+["test_bug717180.html"]
+
+["test_bug1104732.html"]
+support-files = [
+  "file_defer_bug1104732.js",
+  "file_async_bug1104732.sjs",
+]
+
+["test_bug1209658.html"]
+
+["test_bug1364399.html"]
+
+["test_bug1646140-1.html"]
+
+["test_bug1646140-2.html"]
+
+["test_compatmode.html"]
+
+["test_html5_tree_construction.html"]
+
+["test_html5_tree_construction_part2.html"]
+
+["test_img_picture_preload.html"]
+
+["test_xml_mislabeled.html"]
+# Disabled test due to orange on Linux
+#		test_bug568470.html
+#		file_bug568470.sjs
+#		file_bug568470-script.sjs
+# Disable test due to frequent orange on Mac
+#		test_bug534293.html
+
+["test_xml_parse_error.html"]
+support-files = [
+  "file_xml_parse_error.js",
+  "file_xml_parse_error.xml",
+]
diff --git a/parser/htmlparser/tests/mochitest/parser_datreader.js b/parser/htmlparser/tests/mochitest/parser_datreader.js
new file mode 100644
index 0000000000..d3d3ea2c89
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/parser_datreader.js
@@ -0,0 +1,218 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * A test suite that runs WHATWG HTML parser tests.
+ * The tests are from html5lib.
+ *
+ * http://html5lib.googlecode.com/
+ */
+
+/**
+ * A few utility functions.
+ */
+function log(entry) {}
+
+function startsWith(s, s2) {
+  return s.indexOf(s2) == 0;
+}
+
+function trimString(s) {
+  return s.replace(/^\s+/, "").replace(/\s+$/, "");
+}
+
+/**
+ * Parses an individual testcase into an array containing the input
+ * string, a string representing the expected tree (DOM), and a list
+ * of error messages.
+ *
+ * @param A string containing a single testcase
+ */
+function parseTestcase(testcase) {
+  var lines = testcase.split("\n");
+
+  /* check that the first non-empty, non-comment line is #data */
+  for (let line of lines) {
+    if (!line || startsWith(line, "##")) {
+      continue;
+    }
+    if (line == "#data") {
+      break;
+    }
+    log(lines);
+    throw new Error("Unknown test format.");
+  }
+
+  var input = [];
+  var output = [];
+  var errors = [];
+  var fragment = [];
+  var currentList = input;
+  for (let line of lines) {
+    if (startsWith(line, "##todo")) {
+      todo(false, line.substring(6));
+      continue;
+    }
+    if (
+      !(
+        startsWith(line, "#error") ||
+        startsWith(line, "#document") ||
+        startsWith(line, "#document-fragment") ||
+        startsWith(line, "#data")
+      )
+    ) {
+      currentList.push(line);
+    } else if (line == "#errors") {
+      currentList = errors;
+    } else if (line == "#document") {
+      currentList = output;
+    } else if (line == "#document-fragment") {
+      currentList = fragment;
+    }
+  }
+  while (!output[output.length - 1]) {
+    output.pop(); // zap trailing blank lines
+  }
+  // logger.log(input.length, output.length, errors.length);
+  return [input.join("\n"), output.join("\n"), errors, fragment[0]];
+}
+
+/**
+ * A generator function that accepts a list of strings. Each list
+ * member corresponds to the contents of a ".dat" file from the
+ * html5lib test suite.
+ *
+ * @param The list of strings
+ */
+function* test_parser(testlist) {
+  for (var testgroup of testlist) {
+    var tests = testgroup.split("#data\n");
+    tests = tests.filter(test => test).map(test => "#data\n" + test);
+    for (var test of tests) {
+      yield parseTestcase(test);
+    }
+  }
+}
+
+/**
+ * Transforms a DOM document to a string matching the format in
+ * the test cases.
+ *
+ * @param the DOM document
+ */
+function docToTestOutput(doc) {
+  var walker = doc.createTreeWalker(doc, NodeFilter.SHOW_ALL, null);
+  return addLevels(walker, "", "| ").slice(0, -1); // remove the last newline
+}
+
+/**
+ * Creates a walker for a fragment that skips over the root node.
+ *
+ * @param an element
+ */
+function createFragmentWalker(elt) {
+  return elt.ownerDocument.createTreeWalker(
+    elt,
+    NodeFilter.SHOW_ALL,
+    function (node) {
+      return elt == node ? NodeFilter.FILTER_SKIP : NodeFilter.FILTER_ACCEPT;
+    }
+  );
+}
+
+/**
+ * Transforms the descendants of an element to a string matching the format
+ * in the test cases.
+ *
+ * @param an element
+ */
+function fragmentToTestOutput(elt) {
+  var walker = createFragmentWalker(elt);
+  return addLevels(walker, "", "| ").slice(0, -1); // remove the last newline
+}
+
+function addLevels(walker, buf, indent) {
+  if (walker.firstChild()) {
+    do {
+      buf += indent;
+      switch (walker.currentNode.nodeType) {
+        case Node.ELEMENT_NODE:
+          buf += "<";
+          var ns = walker.currentNode.namespaceURI;
+          if ("http://www.w3.org/1998/Math/MathML" == ns) {
+            buf += "math ";
+          } else if ("http://www.w3.org/2000/svg" == ns) {
+            buf += "svg ";
+          } else if ("http://www.w3.org/1999/xhtml" != ns) {
+            buf += "otherns ";
+          }
+          buf += walker.currentNode.localName + ">";
+          if (walker.currentNode.hasAttributes()) {
+            var valuesByName = {};
+            var attrs = walker.currentNode.attributes;
+            for (let i = 0; i < attrs.length; ++i) {
+              var localName = attrs[i].localName;
+              var name;
+              var attrNs = attrs[i].namespaceURI;
+              if (null == attrNs) {
+                name = localName;
+              } else if ("http://www.w3.org/XML/1998/namespace" == attrNs) {
+                name = "xml " + localName;
+              } else if ("http://www.w3.org/1999/xlink" == attrNs) {
+                name = "xlink " + localName;
+              } else if ("http://www.w3.org/2000/xmlns/" == attrNs) {
+                name = "xmlns " + localName;
+              } else {
+                name = "otherns " + localName;
+              }
+              valuesByName[name] = attrs[i].value;
+            }
+            var keys = Object.keys(valuesByName).sort();
+            for (let i = 0; i < keys.length; ++i) {
+              buf +=
+                "\n" +
+                indent +
+                "  " +
+                keys[i] +
+                '="' +
+                valuesByName[keys[i]] +
+                '"';
+            }
+          }
+          break;
+        case Node.DOCUMENT_TYPE_NODE:
+          buf += "<!DOCTYPE " + walker.currentNode.name;
+          if (walker.currentNode.publicId || walker.currentNode.systemId) {
+            buf += ' "';
+            buf += walker.currentNode.publicId;
+            buf += '" "';
+            buf += walker.currentNode.systemId;
+            buf += '"';
+          }
+          buf += ">";
+          break;
+        case Node.COMMENT_NODE:
+          buf += "<!-- " + walker.currentNode.nodeValue + " -->";
+          break;
+        case Node.TEXT_NODE:
+          buf += '"' + walker.currentNode.nodeValue + '"';
+          break;
+      }
+      buf += "\n";
+      // In the case of template elements, children do not get inserted as
+      // children of the template element, instead they are inserted
+      // as children of the template content (which is a document fragment).
+      if (walker.currentNode.constructor.name === "HTMLTemplateElement") {
+        buf += indent + "  content\n";
+        // Walk through the template content.
+        var templateWalker = createFragmentWalker(walker.currentNode.content);
+        buf = addLevels(templateWalker, buf, indent + "    ");
+      }
+      buf = addLevels(walker, buf, indent + "  ");
+    } while (walker.nextSibling());
+    walker.parentNode();
+  }
+  return buf;
+}
diff --git a/parser/htmlparser/tests/mochitest/parser_web_testrunner.js b/parser/htmlparser/tests/mochitest/parser_web_testrunner.js
new file mode 100644
index 0000000000..5a0cfc64c8
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/parser_web_testrunner.js
@@ -0,0 +1,148 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Runs html5lib-formatted test cases in the browser. Requires SimpleTest.
+ *
+ * Define an array named parserDatFiles before loading this script,
+ * and it will load each of those dat files into an array, then run
+ * the test parser on each and run the tests by assigning the input
+ * data to an iframe's url.
+ *
+ * Your test document should have an element with id "display" and
+ * an iframe with id "testframe".
+ */
+
+/* import-globals-from ./parser_datreader.js */
+/* import-globals-from ./html5_tree_construction_exceptions.js */
+/* globals parserDatFiles */
+
+var functionsToRunAsync = [];
+
+window.addEventListener(
+  "message",
+  function (event) {
+    if (event.source == window && event.data == "async-run") {
+      event.stopPropagation();
+      var fn = functionsToRunAsync.shift();
+      fn();
+    }
+  },
+  true
+);
+
+function asyncRun(fn) {
+  functionsToRunAsync.push(fn);
+  window.postMessage("async-run", "*");
+}
+
+function writeErrorSummary(input, expected, got, isTodo) {
+  if (isTodo) {
+    $("display").appendChild(createEl("h2", null, "Unexpected Success:"));
+  } else {
+    $("display").appendChild(createEl("h2", null, "Unexpected Failure:"));
+  }
+  $("display").appendChild(createEl("br"));
+  $("display").appendChild(createEl("span", null, "Matched: "));
+  $("display").appendChild(document.createTextNode("" + (expected == got)));
+  var pre = createEl("pre");
+  pre.appendChild(document.createTextNode("Input: \n" + input, "\n-\n"));
+  pre.appendChild(document.createTextNode("Expected:\n" + expected, "\n-\n"));
+  pre.appendChild(document.createTextNode("Output:\n" + got + "\n-\n"));
+  $("display").appendChild(pre);
+  $("display").appendChild(createEl("hr"));
+}
+
+/**
+ * Control will bounce back and forth between nextTest() and the
+ * event handler returned by makeTestChecker() or the callback returned by
+ * makeFragmentTestChecker() until the 'testcases' iterator is spent.
+ */
+function makeTestChecker(input, expected, errors) {
+  return function (e) {
+    var domAsString = docToTestOutput(e.target.contentDocument);
+    if (html5Exceptions[input]) {
+      todo_is(domAsString, expected, "HTML5 expected success.");
+      if (domAsString == expected) {
+        writeErrorSummary(input, expected, domAsString, true);
+      }
+    } else {
+      is(domAsString, expected, "HTML5 expected success.");
+      if (domAsString != expected) {
+        writeErrorSummary(input, expected, domAsString, false);
+      }
+    }
+    nextTest(e.target);
+  };
+}
+
+function makeFragmentTestChecker(input, expected, errors, fragment, testframe) {
+  return function () {
+    var context;
+    if (fragment.startsWith("svg ")) {
+      context = document.createElementNS(
+        "http://www.w3.org/2000/svg",
+        fragment.substring(4)
+      );
+    } else if (fragment.startsWith("math ")) {
+      context = document.createElementNS(
+        "http://www.w3.org/1998/Math/MathML",
+        fragment.substring(5)
+      );
+    } else {
+      context = document.createElementNS(
+        "http://www.w3.org/1999/xhtml",
+        fragment
+      );
+    }
+    context.innerHTML = input;
+    var domAsString = fragmentToTestOutput(context);
+    is(domAsString, expected, "HTML5 expected success. " + new Date());
+    if (domAsString != expected) {
+      writeErrorSummary(input, expected, domAsString, false);
+    }
+    nextTest(testframe);
+  };
+}
+
+var testcases;
+function nextTest(testframe) {
+  var { done, value } = testcases.next();
+  if (done) {
+    SimpleTest.finish();
+    return;
+  }
+  var [input, output, errors, fragment] = value;
+  if (fragment) {
+    asyncRun(
+      makeFragmentTestChecker(input, output, errors, fragment, testframe)
+    );
+  } else {
+    testframe.onload = makeTestChecker(input, output, errors);
+    testframe.srcdoc = input;
+  }
+}
+
+var testFileContents = [];
+function loadNextTestFile() {
+  var datFile = parserDatFiles.shift();
+  if (datFile) {
+    var xhr = new XMLHttpRequest();
+    xhr.onreadystatechange = function () {
+      if (this.readyState == 4) {
+        testFileContents.push(this.responseText);
+        loadNextTestFile();
+      }
+    };
+    xhr.open("GET", "html5lib_tree_construction/" + datFile);
+    xhr.send();
+  } else {
+    testcases = test_parser(testFileContents);
+    nextTest($("testframe"));
+  }
+}
+
+addLoadEvent(loadNextTestFile);
+SimpleTest.waitForExplicitFinish();
diff --git a/parser/htmlparser/tests/mochitest/test_base_csp_img.html b/parser/htmlparser/tests/mochitest/test_base_csp_img.html
new file mode 100644
index 0000000000..d17a99c657
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_base_csp_img.html
@@ -0,0 +1,35 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Base with base-uri CSP</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+
+  <!-- Set CSP -->
+  <meta http-equiv="Content-Security-Policy" content="base-uri 'self';">
+
+  <!-- Base should be ignored -->
+  <base href="http://example.org/">
+</head>
+<body>
+
+<img src="/tests/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs?image" width=10 height=10>
+
+<script>
+add_task(async function() {
+  let response = await fetch(
+    "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs?result"
+  );
+  let hosts = await response.json();
+
+  is(hosts.length, 1, "One host");
+  is(hosts[0], "mochi.test", "Host was not influenced by base");
+
+  info("finished");
+});
+</script>
+
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html b/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html
new file mode 100644
index 0000000000..f0becc4080
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Base with base-uri CSP header</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+
+  <!-- Base should be ignored -->
+  <base href="http://example.org/">
+</head>
+<body>
+
+<img src="/tests/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs?image" width=10 height=10>
+
+<script>
+add_task(async function() {
+  let response = await fetch(
+    "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_base_csp_img.sjs?result"
+  );
+  let hosts = await response.json();
+
+  is(hosts.length, 1, "One host");
+  is(hosts[0], "mochi.test", "Host was not influenced by base");
+
+  info("finished");
+});
+</script>
+
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html^headers^ b/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html^headers^
new file mode 100644
index 0000000000..3c02326419
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_base_header_csp_img.html^headers^
@@ -0,0 +1 @@
+Content-Security-Policy: base-uri 'self';
diff --git a/parser/htmlparser/tests/mochitest/test_bug102699.html b/parser/htmlparser/tests/mochitest/test_bug102699.html
new file mode 100644
index 0000000000..f7d88910cf
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug102699.html
@@ -0,0 +1,75 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=102699
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 102699</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=102699">Mozilla Bug 102699</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 102699 **/
+
+SimpleTest.waitForExplicitFinish();
+
+var p = new DOMParser();
+
+var d = p.parseFromString(
+'<meta charset="windows-1252">' +
+"\u003cscript>" +
+'document.documentElement.setAttribute("data-fail", "FAIL");' +
+"\u003c/script>" +
+'\u003cscript src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs">\u003c/script>' +
+'\u003cscript src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs" defer>\u003c/script>' +
+'\u003cscript src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs" async>\u003c/script>' +
+'<link type="stylesheet" href="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs">' +
+'<body onload=\'document.documentElement.setAttribute("data-fail", "FAIL");\'>' +
+'<img src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs">' +
+'<iframe src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs"></iframe>' +
+'<video poster="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs" src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs"></video>' +
+'<object data="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug102699.sjs"></object>' +
+'<noscript><div></div></noscript>"', "text/html");
+
+is(d.createElement("div").tagName, "DIV", "The created document should have HTML nature.");
+
+is(d.getElementsByTagName("div").length, 1, "There should be one div.");
+
+is(d.contentType, "text/html", "contentType should be text/html");
+
+is(d.characterSet, "UTF-8", "Expected the <meta> to be ignored.");
+
+is(d.compatMode, "BackCompat", "Should be in the quirks mode.");
+
+var scripts = d.getElementsByTagName("script");
+is(scripts.length, 4, "Unexpected number of scripts.");
+while (scripts.length) {
+  // These should not run when moved to another doc
+  document.body.appendChild(scripts[0]);
+}
+var s = document.createElement("script");
+s.src = "file_bug102699.sjs?report=1";
+document.body.appendChild(s);
+
+function continueAfterReport() {
+  ok(!d.documentElement.hasAttribute("data-fail"), "Should not have a data-fail attribute.");
+
+  d = p.parseFromString("<!DOCTYPE html>", "text/html");
+  is(d.compatMode, "CSS1Compat", "Should be in the standards mode.");
+
+  SimpleTest.finish();
+}
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug1104732.html b/parser/htmlparser/tests/mochitest/test_bug1104732.html
new file mode 100644
index 0000000000..7a77e5936d
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug1104732.html
@@ -0,0 +1,59 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1104732
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1104732</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 1104732 **/
+
+  // Expected order of the values of the "state" variable:
+  // Test starting
+  // defer
+  // DOMContentLoaded
+  // load
+
+  // In the meantime, the async script load should happen before load.
+  // Ideally, we would want to assert that it happens after DOMContentLoaded,
+  // because it shouldn't be holding up DOMContentLoaded, but there is
+  // no *guarantee* that this is the case, so we cannot assert it.
+
+  var state = "Test starting";
+  var asyncState = "not loaded";
+  SimpleTest.waitForExplicitFinish();
+  is(document.readyState, "loading", "Document should have been loading.");
+  document.addEventListener("DOMContentLoaded", function() {
+    is(document.readyState, "interactive", "readyState should be interactive during DOMContentLoaded.");
+    is(state, "defer", "Bad state upon DOMContentLoaded");
+    state = "DOMContentLoaded";
+    // This doesn't work (see above), but we can't "todo" this assertion either, because
+    // it will sometimes be the case...
+    // isnot(asyncState, "loaded", "Async script should not have delayed domcontentloaded");
+  });
+  window.addEventListener("load", function() {
+    is(document.readyState, "complete", "readyState should be complete during load.");
+    is(state, "DOMContentLoaded", "Bad state upon load");
+    state = "load";
+    is(asyncState, "loaded", "Async script should be loaded upon document load event");
+    SimpleTest.finish();
+  });
+  </script>
+  <script defer src="file_defer_bug1104732.js"></script>
+  <script async src="file_async_bug1104732.sjs"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1104732">Mozilla Bug 1104732</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug1209658.html b/parser/htmlparser/tests/mochitest/test_bug1209658.html
new file mode 100644
index 0000000000..3ef27d1925
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug1209658.html
@@ -0,0 +1,35 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1209658
+-->
+<head>
+  <title>Test for Bug 1209658</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1209658">Mozilla Bug 1209658</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<script type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+addLoadEvent(function loaded() {
+  for (var iframe of document.querySelectorAll("iframe")) {
+    is(SpecialPowers.wrap(iframe).contentWindow.location.href, iframe.src, "should load correct URL");
+    is(SpecialPowers.wrap(iframe).contentDocument.body.textContent, '{"<p>Hello</p>": null}',
+       iframe.getAttribute("mimeType") + " should be treated as text");
+  }
+  SimpleTest.finish();
+});
+</script>
+<iframe src="data:text/json,{&quot;<p>Hello</p>&quot;:%20null}"
+        mimeType="text/json"></iframe>
+<!-- Totally not valid VTT data, but doesn't matter for our purposes here -->
+<iframe src="data:text/vtt,{&quot;<p>Hello</p>&quot;:%20null}"
+        mimeType="text/vtt"></iframe>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug1364399.html b/parser/htmlparser/tests/mochitest/test_bug1364399.html
new file mode 100644
index 0000000000..84d9a38aed
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug1364399.html
@@ -0,0 +1,43 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1364399
+-->
+<head>
+  <title>Test for Bug 1364399</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1364399">Mozilla Bug 1364399</a>
+<p id="display"></p>
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 1364399 **/
+// Non-data: version at dom/base/test/test_bug518104.html
+SimpleTest.waitForExplicitFinish();
+
+function done() {
+  // document.write should have gotten ignored due to the
+  // ignore-destructive-writes counter. Then document.close should
+  // have gotten ignored due to the parser still being not-script-created.
+  var iframe = document.getElementById("iframe");
+  var divs = iframe.contentWindow.document.getElementsByTagName("div").length;
+  is(divs, 2, "<div>s are still there.");
+  var ps = iframe.contentWindow.document.getElementsByTagName("p").length;
+  is(ps, 0, "<p> did not get written.");
+  SimpleTest.finish();
+}
+
+</script>
+<div id="content" style="display: none">
+  <iframe id='iframe' srcdoc="
+    <div></div><div></div>
+    <script defer src='data:application/javascript,document.write(&quot;<p></p>&quot;);parent.done();document.close();'></script>">
+  </iframe>
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug1646140-1.html b/parser/htmlparser/tests/mochitest/test_bug1646140-1.html
new file mode 100644
index 0000000000..8592d0d17f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug1646140-1.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<div id="div">
+<script>
+/* globals div svgRanScript */
+SimpleTest.waitForExplicitFinish();
+
+window.svgRanScript = false;
+const o = new MutationObserver(mutations => {
+  o.disconnect();
+  setTimeout(() => {
+    ok(!svgRanScript, "svg onload must not fire");
+    SimpleTest.finish();
+  });
+});
+o.observe(div, {childList: true});
+const p = (new DOMParser()).parseFromString("<svg onload=\"window.svgRanScript=true\"></svg>", "text/html");
+div.appendChild(p.body);
+</script>
diff --git a/parser/htmlparser/tests/mochitest/test_bug1646140-2.html b/parser/htmlparser/tests/mochitest/test_bug1646140-2.html
new file mode 100644
index 0000000000..11c370d401
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug1646140-2.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/EventUtils.js"></script>
+<div id="div" contenteditable></div>
+<script>
+/* globals div svgRanScript */
+window.svgRanScript = false;
+document.addEventListener("copy", ev => {
+  ev.preventDefault();
+  ev.clipboardData.setData('text/html', "<svg><style><svg/onload=\"window.svgRanScript=true\">");
+});
+const o = new MutationObserver(mutations => {
+  o.disconnect();
+  setTimeout(() => {
+    ok(!svgRanScript, "svg onload must not fire");
+    SimpleTest.finish()
+  });
+});
+o.observe(div, {childList: true});
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(() => {
+  getSelection().collapse(div);
+  SpecialPowers.doCommand(window, "cmd_copy");
+  SpecialPowers.doCommand(window, "cmd_paste");
+});
+</script>
diff --git a/parser/htmlparser/tests/mochitest/test_bug174351.html b/parser/htmlparser/tests/mochitest/test_bug174351.html
new file mode 100644
index 0000000000..a370d9fefc
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug174351.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=174351
+-->
+<head>
+  <title>Test for Bug 174351</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=174351">Mozilla Bug 174351</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+  var iframe = document.createElement("iframe");
+  iframe.src = "invalidchar.xml";
+  iframe.onload = function() {
+    var doc = document.getElementById("test").childNodes[1].contentDocument;
+    ok(doc.documentElement.tagName != "root", "Since XML has invalid enconding, must throw error");
+  };
+
+  document.getElementById("test").appendChild(iframe);
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug213517.html b/parser/htmlparser/tests/mochitest/test_bug213517.html
new file mode 100644
index 0000000000..b5bb5afa74
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug213517.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=213517
+-->
+<head>
+  <meta charset="x-user-defined">
+  <title>Test for Bug 213517</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 213517 **/
+
+  is(document.characterSet, "windows-1252", "x-user-defined in <meta> should have gotten mapped to windows-1252");
+
+
+
+  </script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=213517">Mozilla Bug 213517</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug339350.xhtml b/parser/htmlparser/tests/mochitest/test_bug339350.xhtml
new file mode 100644
index 0000000000..db729f527a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug339350.xhtml
@@ -0,0 +1,60 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!-- 
+Tests by Sam Ruby - WTFPL License (http://sam.zoy.org/wtfpl/)
+
+http://www.intertwingly.net/blog/2006/10/03/Firefox-XHTML-innerHTML-quirk#comments
+https://bugzilla.mozilla.org/show_bug.cgi?id=339350
+-->
+<head>
+  <!-- XHTML needs the packed version -->
+  <script src="/tests/SimpleTest/SimpleTest.js"/>   
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a  target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=339350">Mozilla Bug 339350</a>
+<div style="display: none">
+  <table border="1" cellspacing="0">
+  <thead>
+  <th></th>
+  <th>plain</th>
+  <th>brackets</th>
+  <th>braces</th>
+  </thead>
+
+  <tr>
+  <th>innerHTML</th>
+  <td><div id="i1"/></td>
+  <td style="background:yellow"><div id="i2"/></td>
+  <td><div id="i3"/></td>
+  </tr>
+  <tr>
+  <th>textNode</th>
+  <td><div id="t1"/></td>
+  <td><div id="t2"/></td>
+  <td><div id="t3"/></td>
+  </tr>
+  </table>
+</div>
+<pre id="test">
+<script type="text/javascript">
+var text1 = "foo bar";
+var text2 = "foo [bar]";
+var text3 = "foo {bar}";
+
+// This is the long way to write this stuff,
+// you can use MochiKit functions too
+document.getElementById("i1").innerHTML = text1;
+document.getElementById("i2").innerHTML = text2;
+document.getElementById("i3").innerHTML = text3;
+
+document.getElementById("t1").appendChild(document.createTextNode(text1));
+document.getElementById("t2").appendChild(document.createTextNode(text2));
+document.getElementById("t3").appendChild(document.createTextNode(text3));
+
+<!-- The is() function is one way to add a test -->
+is(document.getElementById("i2").innerHTML, text2, "XHTML innerHTML with trailing brackets ']]'");
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug358797.html b/parser/htmlparser/tests/mochitest/test_bug358797.html
new file mode 100644
index 0000000000..f142c42c88
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug358797.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=358797
+-->
+<head>
+  <title>Test for Bug 358797</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>        
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=358797">Mozilla Bug 358797</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 358797 **/
+
+var range = document.createRange();
+range.selectNode(document.firstChild);
+var cf = range.createContextualFragment("<span></span>");
+ok(cf != null,
+   "range.createContextualFragment() should work when range node is DocType");
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug396568.html b/parser/htmlparser/tests/mochitest/test_bug396568.html
new file mode 100644
index 0000000000..d4152e7971
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug396568.html
@@ -0,0 +1,48 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=396568
+-->
+<head>
+  <title>Test for Bug 396568</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <!--These script tags are part of the test, complete with indentation!-->
+  <script language="javascript"
+
+
+
+
+
+
+       
+          type="text/javascript"></script>
+  <script language="javascript"
+          type="text/javascript"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=396568">Mozilla Bug 396568</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 396568 **/
+
+ var reached = false;
+ try {
+   // eslint-disable-next-line no-undef
+   noSuchIdentifier;
+   reached = true;
+ } catch (e) {
+   is(e.lineNumber, 37, "Unexpected line number"); // this line number is dependent on the line number of noSuchIdentifier
+ }
+ is(reached, false, "Exception needed to be thrown");
+
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug418464.html b/parser/htmlparser/tests/mochitest/test_bug418464.html
new file mode 100644
index 0000000000..c9c6f585e3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug418464.html
@@ -0,0 +1,43 @@
+<form name="formGo" method="post">
+  <input type="hidden">
+</form>
+<script>
+  var form1 = document.formGo;
+</script>
+<form name="formGo2" method="post">
+  <input type="Hidden">
+</form>
+<script>
+  var form2 = document.formGo2;
+</script>
+  <!-- NOTE: The forms and scripts above this comment _must_ come first in this file-->
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=418464
+-->
+<head>
+  <title>Test for Bug 418464</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=418464">Mozilla Bug 418464</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 418464 **/
+  is(form1 instanceof HTMLFormElement, true,
+     "Should have a form here");
+  is(form2 instanceof HTMLFormElement, true,
+     "Should have a form here");
+
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug460437.xhtml b/parser/htmlparser/tests/mochitest/test_bug460437.xhtml
new file mode 100644
index 0000000000..41d65f37d1
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug460437.xhtml
@@ -0,0 +1,39 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=460437
+-->
+<head>
+  <title>Test for Bug 460437</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=460437">Mozilla Bug 460437</a>
+<p id="display"><b id="test460437">orig</b></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+<![CDATA[
+
+SimpleTest.expectAssertions(1);
+
+/** Test for Bug 460437 **/
+
+var s = "<i>invalid</i";
+try {
+  document.getElementById("test460437").innerHTML = s;
+} catch (e) {
+}
+is(document.getElementById("test460437").innerHTML, "", "setting invalid innerHTML should clear it");
+s = "<i>valid</i>";
+document.getElementById("test460437").innerHTML = s;
+is(document.getElementById("test460437").innerHTML, "<i xmlns=\"http://www.w3.org/1999/xhtml\">valid</i>", "failed to set valid innerHTML");
+
+
+]]>
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug502091.html b/parser/htmlparser/tests/mochitest/test_bug502091.html
new file mode 100644
index 0000000000..e6c318e7c6
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug502091.html
@@ -0,0 +1,37 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=502091
+
+Adding a <meta> element by writing to innerHTML should work correctly.
+-->
+<head>
+  <title>Test for Bug 502091</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=502091">Mozilla Bug 502091</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<div id="test">
+<script class="testbody" type="text/javascript">
+  function $(id) { return document.getElementById(id); }
+
+  var iframe = document.createElement("iframe");
+  iframe.setAttribute("id", "iframe");
+  iframe.src = "bug_502091_iframe.html";
+  iframe.onload = function() {
+    var div = $("iframe").contentDocument.getElementById("testdiv");
+    var meta = div.getElementsByTagName("meta");
+    is(meta.length, 1, "meta element not added to div");
+  };
+  $("test").appendChild(iframe);
+
+</script>
+</div>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug534293.html b/parser/htmlparser/tests/mochitest/test_bug534293.html
new file mode 100644
index 0000000000..62a9605dcd
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug534293.html
@@ -0,0 +1,22 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=534293
+-->
+<head>
+  <title>Test for Bug 534293</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug534293-slow.sjs"></script>
+  <base href="dir_bug534293/">
+  <script src="file_bug534293.sjs"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=534293">Mozilla Bug 534293</a>
+
+<script src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug534293.sjs?report=1"></script>
+<script src="http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/dir_bug534293/file_bug534293.sjs?report=1"></script>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug543062.html b/parser/htmlparser/tests/mochitest/test_bug543062.html
new file mode 100644
index 0000000000..8a966df383
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug543062.html
@@ -0,0 +1,26 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=543062
+-->
+<head>
+  <title>Test for Bug 543062</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=543062">Mozilla Bug 543062</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+document.write("\u003Cscript src='file_bug543062.sjs?first'>\u003C/script>\u003Cscript src='file_bug543062.sjs?second'>\u003C/script>");
+document.write("\u003Cscript src='file_bug543062.sjs?third'>\u003C/script>");
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug552938-2.html b/parser/htmlparser/tests/mochitest/test_bug552938-2.html
new file mode 100644
index 0000000000..87996765d0
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug552938-2.html
@@ -0,0 +1,38 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=552938
+-->
+<head>
+  <title>Test for Bug 552938</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload='runTest();'>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=552938">Mozilla Bug 552938</a>
+<script>
+var svgLoadFired = false;
+</script>
+<p id="display"></p>
+<div id="content" style="display: none">
+  <svg>
+    <script>
+       document.getElementsByTagName("svg")[0].addEventListener("SVGLoad",
+         function() { svgLoadFired = true; });
+    </script>
+  </svg>
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 552938 **/
+function runTest() {
+  ok(svgLoadFired, "The SVG load event should have fired.");
+  SimpleTest.finish();
+}
+SimpleTest.waitForExplicitFinish();
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug552938.html b/parser/htmlparser/tests/mochitest/test_bug552938.html
new file mode 100644
index 0000000000..77d96691a6
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug552938.html
@@ -0,0 +1,33 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=552938
+-->
+<head>
+  <title>Test for Bug 552938</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload='runTest();'>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=552938">Mozilla Bug 552938</a>
+<script>
+var svgLoadFired = false;
+</script>
+<p id="display"></p>
+<div id="content" style="display: none">
+  <svg onload="svgLoadFired = true;"></svg>
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 552938 **/
+function runTest() {
+  ok(svgLoadFired, "The SVG load event should have fired.");
+  SimpleTest.finish();
+}
+SimpleTest.waitForExplicitFinish();
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug563322.xhtml b/parser/htmlparser/tests/mochitest/test_bug563322.xhtml
new file mode 100644
index 0000000000..35239cb69a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug563322.xhtml
@@ -0,0 +1,33 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=563322
+-->
+<head>
+  <title>Test for Bug 563322</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=563322">Mozilla Bug 563322</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+<![CDATA[
+
+/** Test for Bug 563322 **/
+
+var div = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
+div.innerHTML = "<script>ok(false, 'Script ran but should not have')</script><script>ok(false, 'Script ran but should not have')</script>";
+
+document.getElementById("content").appendChild(div);
+
+ok(true, "Keep the harness happy");
+
+]]>
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug566879.html b/parser/htmlparser/tests/mochitest/test_bug566879.html
new file mode 100644
index 0000000000..37c0430583
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug566879.html
@@ -0,0 +1,63 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=566879
+-->
+<head>
+  <title>Test for Bug 566879</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload='runTest();'>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=566879">Mozilla Bug 566879</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+<form>
+<input type=text id=textfield name=textfield>
+<input type=checkbox id=checkbox name=checkbox>
+<input type=radio id=radio1 name=radio>
+<input type=radio id=radio2 name=radio>
+<textarea name=textarea id=textarea></textarea>
+<select name=select id=select>
+<option value=foo>Foo</option>
+<option value=bar selected>Bar</option>
+</select>
+</form>  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+var initialState;
+
+function runTest() {
+  initialState = document.getElementById("content").innerHTML;
+  document.getElementById("textfield").value = "foo";
+  document.getElementById("checkbox").checked = true;
+  document.getElementById("radio2").checked = true;
+  document.getElementById("textarea").value = "foo";
+  document.getElementById("select").value = "foo";
+  setTimeout(continuation1, 1);
+}
+
+function continuation1() {
+  document.getElementById("content").innerHTML = initialState;
+  setTimeout(continuation2, 1);
+}
+
+function continuation2() {
+  is(document.getElementById("textfield").value, "", "The text field should have gone back to its initial state.");
+  ok(!document.getElementById("checkbox").checked, "The checkbox should have gone back to its initial state.");
+  ok(!document.getElementById("radio2").checked, "The second radio button should have gone back to its initial state.");
+  is(document.getElementById("textarea").value, "", "The text area should have gone back to its initial state.");
+  is(document.getElementById("select").value, "bar", "The select should have gone back to its initial state.");
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug568470.html b/parser/htmlparser/tests/mochitest/test_bug568470.html
new file mode 100644
index 0000000000..fc8f26f5d4
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug568470.html
@@ -0,0 +1,51 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=568470
+-->
+<head>
+  <title>Test for Bug 568470</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=568470">Mozilla Bug 568470</a>
+<p id="display"></p>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+/** Test for Bug 568470 **/
+SimpleTest.waitForExplicitFinish();
+
+// assuming the test runs in less than a year...
+var time = new Date().getTime() + 1000 * 60 * 60 * 24 * 365;
+
+var interval = setInterval(function() {
+  var iframe = document.getElementsByTagName("iframe")[0];
+  if (iframe) {
+    var doc = iframe.contentDocument;
+    if (doc) {
+      if (doc.getElementById("flushable")) {
+        time = new Date();
+        clearInterval(interval);
+      }
+    }
+  }
+}, 25);
+
+function finish() {
+  clearInterval(interval);
+  var elapsed = new Date().getTime() - time;
+  ok(elapsed > 350,
+     "Content flush time and parse end time not enough apart.");
+  SimpleTest.finish();
+}
+
+</script>
+</pre>
+<div id="content" style="display: none">
+  <iframe onload="finish();" src="file_bug568470.sjs"></iframe>
+</div>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug594730.html b/parser/htmlparser/tests/mochitest/test_bug594730.html
new file mode 100644
index 0000000000..5042c8ae32
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug594730.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=594730
+-->
+<head>
+  <title>Test for Bug 594730</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=594730">Mozilla Bug 594730</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<iframe src=file_bug594730-1.html></iframe>
+<iframe src=file_bug594730-2.html></iframe>
+<iframe src=file_bug594730-3.html></iframe>
+<iframe src=file_bug594730-4.html></iframe>
+<iframe src=file_bug594730-5.html></iframe>
+<iframe src=file_bug594730-6.html></iframe>
+<iframe src=file_bug594730-7.html></iframe>
+<iframe src=file_bug594730-8.html></iframe>
+<iframe src=file_bug594730-9.html></iframe>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug613662.html b/parser/htmlparser/tests/mochitest/test_bug613662.html
new file mode 100644
index 0000000000..a35f52e453
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug613662.html
@@ -0,0 +1,132 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=613662
+-->
+<head>
+  <title>Test for Bug 613662</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=613662">Mozilla Bug 613662</a>
+<p id="display"></p><div id="content" style="display: none"></div><div id="content2" style="display: none"></div><pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 613662 **/
+
+function testPositions(node) {
+  node.insertAdjacentHTML("beforeBegin", "\u003Cscript>ok(false, 'script should not have run');\u003C/script><i></i>");
+  is(node.previousSibling.localName, "i", "Should have had <i> as previous sibling");
+  node.insertAdjacentHTML("Afterbegin", "<b></b>\u003Cscript>ok(false, 'script should not have run');\u003C/script>");
+  is(node.firstChild.localName, "b", "Should have had <b> as first child");
+  node.insertAdjacentHTML("BeforeEnd", "\u003Cscript>ok(false, 'script should not have run');\u003C/script><u></u>");
+  is(node.lastChild.localName, "u", "Should have had <u> as last child");
+  node.insertAdjacentHTML("afterend", "<a></a>\u003Cscript>ok(false, 'script should not have run');\u003C/script>");
+  is(node.nextSibling.localName, "a", "Should have had <a> as next sibling");
+}
+
+var content = document.getElementById("content");
+testPositions(content); // without next sibling
+testPositions(content); // test again when there's next sibling
+
+try {
+  content.insertAdjacentHTML("bar", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "SyntaxError", "insertAdjacentHTML should throw SyntaxError");
+  is(e.code, 12, "insertAdjacentHTML should throw SYNTAX_ERR");
+}
+
+var parent = document.createElement("div");
+var child = document.createElement("div");
+
+try {
+  child.insertAdjacentHTML("Beforebegin", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+try {
+  child.insertAdjacentHTML("AfterEnd", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+child.insertAdjacentHTML("afterBegin", "foo"); // mustn't throw
+child.insertAdjacentHTML("beforeend", "foo"); // mustn't throw
+
+parent.appendChild(child);
+testPositions(child); // node not in tree but has parent
+
+content.appendChild(parent); // must not run scripts
+
+try {
+  document.documentElement.insertAdjacentHTML("afterend", "<div></div>");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+var content2 = document.getElementById("content2");
+
+var events = [
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+];
+
+function mutationEventListener(evt) {
+  var expected = events.shift();
+  is(evt.type, expected[0], "Unexpected mutation type");
+  is(evt.relatedNode, expected[1], "Unexpected related node");
+}
+/*
+document.addEventListener("DOMSubtreeModified", mutationEventListener, false);
+document.addEventListener("DOMNodeInserted", mutationEventListener, false);
+document.addEventListener("DOMNodeRemoved", mutationEventListener, false);
+document.addEventListener("DOMNodeRemovedFromDocument", mutationEventListener, false);
+document.addEventListener("DOMNodeInsertedIntoDocument", mutationEventListener, false);
+document.addEventListener("DOMAttrModified", mutationEventListener, false);
+document.addEventListener("DOMCharacterDataModified", mutationEventListener, false);
+
+testPositions(content2); // without next sibling
+testPositions(content2); // test again when there's next sibling
+
+is(events.length, 0, "Not all expected events fired.");
+*/
+// HTML only
+document.body.insertAdjacentHTML("afterend", "<p>");
+document.head.insertAdjacentHTML("beforebegin", "<p>");
+is(document.getElementsByTagName("head").length, 1, "Should still have one head");
+is(document.getElementsByTagName("body").length, 1, "Should still have one body");
+
+</script>
+</pre>
+</body></html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug613662.xhtml b/parser/htmlparser/tests/mochitest/test_bug613662.xhtml
new file mode 100644
index 0000000000..b6a5c63670
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug613662.xhtml
@@ -0,0 +1,137 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=613662
+-->
+<head>
+  <title>Test for Bug 613662</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=613662">Mozilla Bug 613662</a>
+<p id="display"></p><div id="content" style="display: none"></div><div id="content2" style="display: none"></div><pre id="test">
+<script type="application/javascript"><![CDATA[
+
+SimpleTest.expectAssertions(1);
+
+/** Test for Bug 613662 **/
+
+function testPositions(node) {
+  node.insertAdjacentHTML("beforeBegin", "\u003Cscript>ok(false, 'script should not have run');\u003C/script><i></i>");
+  is(node.previousSibling.localName, "i", "Should have had <i> as previous sibling");
+  node.insertAdjacentHTML("Afterbegin", "<b></b>\u003Cscript>ok(false, 'script should not have run');\u003C/script>");
+  is(node.firstChild.localName, "b", "Should have had <b> as first child");
+  node.insertAdjacentHTML("BeforeEnd", "\u003Cscript>ok(false, 'script should not have run');\u003C/script><u></u>");
+  is(node.lastChild.localName, "u", "Should have had <u> as last child");
+  node.insertAdjacentHTML("afterend", "<a></a>\u003Cscript>ok(false, 'script should not have run');\u003C/script>");
+  is(node.nextSibling.localName, "a", "Should have had <a> as next sibling");
+}
+
+var content = document.getElementById("content");
+testPositions(content); // without next sibling
+testPositions(content); // test again when there's next sibling
+
+try {
+  content.insertAdjacentHTML("bar", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "SyntaxError", "insertAdjacentHTML should throw SyntaxError");
+  is(e.code, 12, "insertAdjacentHTML should throw SYNTAX_ERR");
+}
+
+var parent = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
+var child = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
+
+try {
+  child.insertAdjacentHTML("Beforebegin", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+try {
+  child.insertAdjacentHTML("AfterEnd", "foo");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+child.insertAdjacentHTML("afterBegin", "foo"); // mustn't throw
+child.insertAdjacentHTML("beforeend", "foo"); // mustn't throw
+
+parent.appendChild(child);
+testPositions(child); // node not in tree but has parent
+
+content.appendChild(parent); // must not run scripts
+
+try {
+  document.documentElement.insertAdjacentHTML("afterend", "<div></div>");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "NoModificationAllowedError", "insertAdjacentHTML should throw NoModificationAllowedError");
+  is(e.code, 7, "insertAdjacentHTML should throw NO_MODIFICATION_ALLOWED_ERR");
+}
+
+var content2 = document.getElementById("content2");
+
+var events = [
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMNodeInserted", content2 ],
+  [ "DOMSubtreeModified", null ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMNodeInserted", document.body ],
+  [ "DOMSubtreeModified", null ],
+];
+
+function mutationEventListener(evt) {
+  var expected = events.shift();
+  is(evt.type, expected[0], "Unexpected mutation type");
+  is(evt.relatedNode, expected[1], "Unexpected related node");
+}
+
+document.addEventListener("DOMSubtreeModified", mutationEventListener);
+document.addEventListener("DOMNodeInserted", mutationEventListener);
+document.addEventListener("DOMNodeRemoved", mutationEventListener);
+document.addEventListener("DOMNodeRemovedFromDocument", mutationEventListener);
+document.addEventListener("DOMNodeInsertedIntoDocument", mutationEventListener);
+document.addEventListener("DOMAttrModified", mutationEventListener);
+document.addEventListener("DOMCharacterDataModified", mutationEventListener);
+
+testPositions(content2); // without next sibling
+testPositions(content2); // test again when there's next sibling
+
+is(events.length, 0, "Not all expected events fired.");
+
+// XML-only:
+try {
+  content.insertAdjacentHTML("beforeend", "<p>");
+  ok(false, "insertAdjacentHTML should have thrown");
+} catch (e) {
+  is(e.name, "SyntaxError", "insertAdjacentHTML should throw SyntaxError");
+  is(e.code, 12, "insertAdjacentHTML should throw SYNTAX_ERR");
+}
+
+]]></script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug639362.html b/parser/htmlparser/tests/mochitest/test_bug639362.html
new file mode 100644
index 0000000000..665f3c7910
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug639362.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=639362
+-->
+<head>
+  <title>Test for Bug 639362</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=639362">Mozilla Bug 639362</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<script type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+function loaded(iframe) {
+  is(SpecialPowers.wrap(iframe).contentWindow.location.href, iframe.src, "should load correct URL");
+  is(SpecialPowers.wrap(iframe).contentDocument.body.textContent, "CACHE MANIFEST", "text/cache-manifest should be treated as text");
+  SimpleTest.finish();
+}
+</script>
+<iframe src="data:text/cache-manifest,CACHE MANIFEST" onload="loaded(this);"></iframe>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug642908.html b/parser/htmlparser/tests/mochitest/test_bug642908.html
new file mode 100644
index 0000000000..10fd735363
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug642908.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=642908
+-->
+<head>
+  <title>Test for Bug 642908</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body onload="loaded();">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=642908">Mozilla Bug 642908</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+document.write("\u003Cscript src='data:text/javascript,1;'>\u003C/script>");
+document.write("<noscript><img src='file_bug642908.sjs'></noscript>");
+
+function loaded() {
+  var s = document.createElement("script");
+  s.src = "file_bug642908.sjs?report=1";
+  document.body.appendChild(s);
+}
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug645115.html b/parser/htmlparser/tests/mochitest/test_bug645115.html
new file mode 100644
index 0000000000..74f4e8be4f
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug645115.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=645115
+-->
+<head>
+  <title>Test for Bug 645115</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=645115">Mozilla Bug 645115</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 645115 **/
+var div = document.createElement("div");
+div.innerHTML = "\u003Cscript>ok(false, 'innerHTML script ran');\u003C/script>\u003Cscript>";
+document.getElementById("content").appendChild(div);
+
+ok(true, "Keep the test harness happy.");
+
+</script>
+</pre>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_bug655682.html b/parser/htmlparser/tests/mochitest/test_bug655682.html
new file mode 100644
index 0000000000..7011d3044c
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug655682.html
@@ -0,0 +1,80 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=655682
+-->
+<head>
+  <title>Test for Bug 655682</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=655682">Mozilla Bug 655682</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  <iframe src=file_bug655682.sjs></iframe>
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 655682 **/
+
+var gotOnload = false;
+var finishedTesting = false;
+
+function tryFinishTest() {
+  if (gotOnload && finishedTesting) {
+    SimpleTest.finish();
+  }
+}
+
+addLoadEvent(function() {
+  // Hit the event loop again just to make sure that we're not ending the test
+  // before all activity we care about is done.
+  SimpleTest.executeSoon(function() {
+    gotOnload = true;
+    tryFinishTest();
+  });
+});
+
+var tdsSeen = 0;
+
+var triggeredSecondTd = false;
+
+var iframe = document.getElementsByTagName("iframe")[0];
+
+SimpleTest.waitForExplicitFinish();
+
+function probe() {
+  var tds = iframe.contentDocument.getElementsByTagName("td").length;
+  switch (tds) {
+    case 0:
+      setTimeout(probe, 0);
+      return;
+    case 1:
+      tdsSeen = tds;
+      if (!triggeredSecondTd) {
+        triggeredSecondTd = true;
+        var script = document.createElement("script");
+        script.src = "file_bug655682.sjs?trigger=1";
+        document.head.appendChild(script);
+      }
+      setTimeout(probe, 0);
+      return;
+    case 2:
+      is(tdsSeen, 1, "Should have seen one td before seeing two.");
+      finishedTesting = true;
+      tryFinishTest();
+      return;
+    default:
+      ok(false, "Wrong number of tds");
+      SimpleTest.finish();
+  }
+}
+
+setTimeout(probe, 0);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug667533.html b/parser/htmlparser/tests/mochitest/test_bug667533.html
new file mode 100644
index 0000000000..c531d4cec3
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug667533.html
@@ -0,0 +1,28 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=667533
+-->
+<head>
+  <title>Test for Bug 667533</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=667533">Mozilla Bug 667533</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<script type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+function loaded(iframe) {
+  is(SpecialPowers.wrap(iframe).contentWindow.location.href, iframe.src, "should load correct URL");
+  is(SpecialPowers.wrap(iframe).contentDocument.body.textContent, '{"<p>Hello</p>": null}', "application/json should be treated as text");
+  SimpleTest.finish();
+}
+</script>
+<iframe src="data:application/json,{&quot;<p>Hello</p>&quot;:%20null}" onload="loaded(this);"></iframe>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug672453.html b/parser/htmlparser/tests/mochitest/test_bug672453.html
new file mode 100644
index 0000000000..312757cb58
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug672453.html
@@ -0,0 +1,131 @@
+<!doctype html>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=672453
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 672453</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<a target="_blank"
+   href="https://bugzilla.mozilla.org/show_bug.cgi?id=672453"
+   >Mozilla Bug 672453</a>
+<iframe></iframe>
+<script>
+/** Test for Bug 672453 **/
+
+var tests = [
+  "file_bug672453_not_declared.html",
+  "file_bug672453_xml_decl.html",
+  "file_bug672453_late_meta.html",
+  "file_bug672453_meta_restart.html",
+  "file_bug672453_meta_after_head.html",
+  "file_bug672453_meta_unsupported.html",
+  "file_bug672453_http_unsupported.html",
+  "file_bug672453_meta_utf16.html",
+  "file_bug672453_meta_non_superset.html",
+  "file_bug672453_meta_userdefined.html",
+  "file_bug672453_meta_replacement.html",
+  "file_bug672453_http_replacement.html",
+  "file_bug672453_enc_error.html",
+  "file_bug672453_enc_error_inherited.html",
+  "file_bug672453_meta_speculation_fail.html",
+  "file_bug672453_xml_speculation_fail.html",
+];
+
+// The general idea here is that encoding substitutions or failures to declare the encoding 
+// (except when inherited or, not tested here, all-ASCII) are errors and ineffeciencies
+// or risks about things failing under further editing (i.e. meta after head but within
+// the extended scan zone) are warnings.
+
+var expectedErrors = [
+  { errorMessage: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_not_declared.html",
+    lineNumber: 0,
+    isWarning: true },
+  { errorMessage: "The character encoding of an HTML document was declared using the XML declaration syntax. This is non-conforming, and declaring the encoding using a meta tag at the start of the head part is more efficient.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_xml_decl.html",
+    lineNumber: 1,
+    isWarning: true },
+  { errorMessage: "A meta tag attempting to declare the character encoding declaration was found too late, and the encoding of the parent document was used instead. The meta tag needs to be moved to the start of the head part of the document.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_late_meta.html",
+    lineNumber: 1028,
+    isWarning: false },
+  { errorMessage: "A meta tag attempting to declare the character encoding declaration was found too late, and the encoding of the parent document was used instead. The meta tag needs to be moved to the start of the head part of the document.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_restart.html",
+    lineNumber: 1028,
+    isWarning: false },
+  { errorMessage: "The meta tag declaring the character encoding of the document should be moved to start of the head part of the document.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_after_head.html",
+    lineNumber: 7,
+    isWarning: true },
+  { errorMessage: "An unsupported character encoding was declared for the HTML document using a meta tag. The declaration was ignored.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_unsupported.html",
+    lineNumber: 1,
+    isWarning: false },
+  { errorMessage: "An unsupported character encoding was declared on the transfer protocol level. The declaration was ignored.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_http_unsupported.html",
+    lineNumber: 0,
+    isWarning: false },
+  { errorMessage: "A meta tag was used to declare the character encoding as UTF-16. This was interpreted as an UTF-8 declaration instead.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_utf16.html",
+    lineNumber: 1,
+    isWarning: false },
+  { errorMessage: "An unsupported character encoding was declared for the HTML document using a meta tag. The declaration was ignored.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_non_superset.html",
+    lineNumber: 1,
+    isWarning: false },
+  { errorMessage: "A meta tag was used to declare the character encoding as x-user-defined. This was interpreted as a windows-1252 declaration instead for compatibility with intentionally mis-encoded legacy fonts. This site should migrate to Unicode.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_userdefined.html",
+    lineNumber: 1,
+    isWarning: false },
+  { errorMessage: "A meta tag was used to declare an encoding that is a cross-site scripting hazard. The replacement encoding was used instead.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_replacement.html",
+    lineNumber: 0,
+    isWarning: false },
+  { errorMessage: "An encoding that is a cross-site scripting hazard was declared on the transfer protocol level. The replacement encoding was used instead.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_http_replacement.html",
+    lineNumber: 0,
+    isWarning: false },
+  { errorMessage: "The byte stream was erroneous according to the character encoding that was declared. The character encoding declaration may be incorrect.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_enc_error.html",
+    lineNumber: 0,
+    isWarning: false },
+  { errorMessage: "The byte stream was erroneous according to the character encoding that was inherited from the parent document. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_enc_error_inherited.html",
+    lineNumber: 0,
+    isWarning: false },
+  { errorMessage: "The start of the document was reparsed, because there were non-ASCII characters before the meta tag that declared the encoding. The meta should be the first child of head without non-ASCII comments before.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_meta_speculation_fail.html",
+    lineNumber: 5,
+    isWarning: true },
+  { errorMessage: "The start of the document was reparsed, because there were non-ASCII characters in the part of the document that was unsuccessfully searched for a meta tag before falling back to the XML declaration syntax. A meta tag at the start of the head part should be used instead of the XML declaration syntax.",
+    sourceName: "http://mochi.test:8888/tests/parser/htmlparser/tests/mochitest/file_bug672453_xml_speculation_fail.html",
+    lineNumber: 10,
+    isWarning: true },
+];
+
+SimpleTest.waitForExplicitFinish();
+
+window.onload = function() {
+  var iframe = document.getElementsByTagName("iframe")[0];
+
+  function runNextTest() {
+    var url = tests.shift();
+    if (!url) {
+      SimpleTest.endMonitorConsole();
+      return;
+    }
+    iframe.src = url;
+  }
+  iframe.onload = runNextTest;
+
+  SimpleTest.monitorConsole(SimpleTest.finish, expectedErrors);
+  runNextTest();
+};
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug688580.html b/parser/htmlparser/tests/mochitest/test_bug688580.html
new file mode 100644
index 0000000000..1d18cc5f78
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug688580.html
@@ -0,0 +1,64 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=688580
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 688580</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 688580 **/
+
+  // Expected order:
+  // Test starting
+  // readyState interactive
+  // defer
+  // DOMContentLoaded
+  // readyState complete
+  // load
+
+  var state = "Test starting";
+  var readyStateCall = 0;
+  SimpleTest.waitForExplicitFinish();
+  is(document.readyState, "loading", "Document should have been loading.");
+  document.addEventListener("DOMContentLoaded", function() {
+    is(document.readyState, "interactive", "readyState should be interactive during DOMContentLoaded.");
+    is(state, "defer", "Bad state upon DOMContentLoaded");
+    state = "DOMContentLoaded";
+  });
+  document.addEventListener("readystatechange", function() {
+    readyStateCall++;
+    if (readyStateCall == 1) {
+      is(document.readyState, "interactive", "readyState should have changed to interactive.");
+      is(state, "Test starting", "Bad state upon first readystatechange.");
+      state = "readyState interactive";
+    } else if (readyStateCall == 2) {
+      is(document.readyState, "complete", "readyState should have changed to complete.");
+      is(state, "DOMContentLoaded", "Bad state upon second readystatechange.");
+      state = "readyState complete";
+    } else {
+      ok(false, "Too many readystatechanges");
+    }
+  });
+  window.addEventListener("load", function() {
+    is(document.readyState, "complete", "readyState should be complete during load.");
+    is(state, "readyState complete", "Bad state upon load");
+    state = "load";
+    SimpleTest.finish();
+  });
+  </script>
+  <script defer src="file_bug688580.js"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=688580">Mozilla Bug 688580</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug688580.xhtml b/parser/htmlparser/tests/mochitest/test_bug688580.xhtml
new file mode 100644
index 0000000000..a4046dfa76
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug688580.xhtml
@@ -0,0 +1,62 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=688580
+-->
+<head>
+  <title>Test for Bug 688580</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+  /** Test for Bug 688580 **/
+
+  // Expected order:
+  // Test starting
+  // readyState interactive
+  // defer
+  // DOMContentLoaded
+  // readyState complete
+  // load
+
+  var state = "Test starting";
+  var readyStateCall = 0;
+  SimpleTest.waitForExplicitFinish();
+  is(document.readyState, "loading", "Document should have been loading.");
+  document.addEventListener("DOMContentLoaded", function() {
+    is(document.readyState, "interactive", "readyState should be interactive during DOMContentLoaded.");
+    is(state, "defer", "Bad state upon DOMContentLoaded");
+    state = "DOMContentLoaded";
+  });
+  document.addEventListener("readystatechange", function() {
+    readyStateCall++;
+    if (readyStateCall == 1) {
+      is(document.readyState, "interactive", "readyState should have changed to interactive.");
+      is(state, "Test starting", "Bad state upon first readystatechange.");
+      state = "readyState interactive";
+    } else if (readyStateCall == 2) {
+      is(document.readyState, "complete", "readyState should have changed to complete.");
+      is(state, "DOMContentLoaded", "Bad state upon second readystatechange.");
+      state = "readyState complete";
+    } else {
+      ok(false, "Too many readystatechanges");
+    }
+  });
+  window.addEventListener("load", function() {
+    is(document.readyState, "complete", "readyState should be complete during load.");
+    is(state, "readyState complete", "Bad state upon load");
+    state = "load";
+    SimpleTest.finish();
+  });
+  </script>
+  <script defer="" src="file_bug688580.js"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=688580">Mozilla Bug 688580</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug709083.html b/parser/htmlparser/tests/mochitest/test_bug709083.html
new file mode 100644
index 0000000000..74f39c38d5
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug709083.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=709083
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 709083</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=709083">Mozilla Bug 709083</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<video muted>
+<script type="application/javascript">
+
+/** Test for Bug 709083 **/
+
+ok(document.getElementsByTagName("video")[0].muted, "Should be muted already.");
+
+</script>
+</video>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug715112.html b/parser/htmlparser/tests/mochitest/test_bug715112.html
new file mode 100644
index 0000000000..1b81f2da2a
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug715112.html
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=715112
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 715112</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=715112">Mozilla Bug 715112</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 715112 **/
+
+SimpleTest.waitForExplicitFinish();
+
+var expected = [
+  "First",
+  "Second",
+];
+
+function log(str) {
+  is(str, expected.shift(), "Unexpected log string.");
+}
+
+var w = window.open();
+w.document.open();
+w.document.addEventListener("DOMContentLoaded", function() {
+  is(expected.length, 0, "Not all expected messages were logged.");
+  is(w.document.getElementsByTagName("script").length, 3, "The document should have 3 scripts.");
+  w.close();
+  SimpleTest.finish();
+});
+w.document.write("\u003cscript>opener.log('First');\u003c/script>");
+w.document.write("\u003cscript>document.close();\u003c/script>");
+w.document.write("\u003cscript>opener.log('Second');\u003c/script>");
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug715739.html b/parser/htmlparser/tests/mochitest/test_bug715739.html
new file mode 100644
index 0000000000..914459c2ce
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug715739.html
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=715739
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 715739</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body onload="tick()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=715739">Mozilla Bug 715739</a>
+<p id="display"></p>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 715739 **/
+
+SimpleTest.waitForExplicitFinish();
+
+var runNumber = 0;
+
+function textChildren(node) {
+  var s = "";
+  var n = node.firstChild;
+  while (n) {
+    if (n.nodeType == Node.TEXT_NODE) {
+      s += n.nodeValue;
+    }
+    n = n.nextSibling;
+  }
+  return s;
+}
+
+var f, d;
+
+function tick() {
+  runNumber++;
+  f = document.getElementsByTagName("iframe")[0];
+  d = f.contentDocument;
+  var text;
+
+  if (runNumber == 1) {
+    frames[1].setTimeout(`
+      var d = parent.d;
+      var f = parent.f;
+      d.open();
+      f.addEventListener("load", parent.tick);
+      d.write("X");
+      d.write("\u003cscript>document.write('Y');\u003c/script>");
+      d.write("Z");
+      d.close();
+    `);
+    return;
+  }
+
+  if (runNumber == 2) {
+    text = textChildren(d.body);
+    is(text, "XYZ", "Wrong text before reload.");
+    f.contentWindow.location.reload();
+    return;
+  }
+
+  if (runNumber == 3) {
+    text = textChildren(d.body);
+    is(text, "ABC", "Wrong text after reload.");
+    SimpleTest.finish();
+  }
+}
+
+// We want to trigger a document.open/write with a different window as the
+// entry global.  Let's give that window a blob URL so we don't have to set up
+// extra helper files.
+var blob = new Blob(["ABC"], { type: "text/html" });
+var blobURL = URL.createObjectURL(blob);
+
+</script>
+</pre>
+<div id="content" style="display: none">
+  <iframe></iframe>
+  <iframe></iframe>
+</div>
+<script>
+  document.querySelectorAll("iframe")[1].src = blobURL;
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug716579.html b/parser/htmlparser/tests/mochitest/test_bug716579.html
new file mode 100644
index 0000000000..32ae13a611
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug716579.html
@@ -0,0 +1,44 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=716579
+-->
+<head>
+  <meta charset="windows-1251">
+  <title>Test for Bug 716579</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=716579">Mozilla Bug 716579</a>
+<p id="display"></p>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 716579 **/
+
+var html8 = "FAIL";
+var html16 = "FAIL";
+var xml8 = "FAIL";
+var xml16 = "FAIL";
+
+SimpleTest.waitForExplicitFinish();
+
+window.onload = function() {
+  is(html8, "\u20AC", "HTML UTF-8 failed.");
+  is(html16, "\u20AC", "HTML UTF-16 failed.");
+  is(xml8, "\u20AC", "XML UTF-8 failed.");
+  is(xml16, "\u20AC", "XML UTF-16 failed.");
+  SimpleTest.finish();
+};
+
+</script>
+</pre>
+<div id="content" style="display: none">
+<iframe src="file_bug716579-8.html"></iframe>  
+<iframe src="file_bug716579-16.html"></iframe>  
+<iframe src="file_bug716579-8.xhtml"></iframe>  
+<iframe src="file_bug716579-16.xhtml"></iframe>  
+</div>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_bug717180.html b/parser/htmlparser/tests/mochitest/test_bug717180.html
new file mode 100644
index 0000000000..7351264562
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_bug717180.html
@@ -0,0 +1,44 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=717180
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 717180</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=717180">Mozilla Bug 717180</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  <iframe></iframe>
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 717180 **/
+
+SimpleTest.waitForExplicitFinish();
+
+window.addEventListener("load", function() {
+  var iframe = document.getElementsByTagName("iframe")[0];
+  var d = iframe.contentDocument;
+  d.open();
+  iframe.addEventListener("load", function() {
+    is(iframe.contentDocument.body.textContent, "SUCCESS\n", "Wrong text");
+    SimpleTest.finish();
+  });
+  d.write("\u003Cscript>");
+  d.write("window.location = 'file_bug717180.html';");
+  d.write("\u003C/script>");
+  d.write("FAIL");
+  d.close();
+  is(iframe.contentDocument.body, null, "The document should not have a body right now.");
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_compatmode.html b/parser/htmlparser/tests/mochitest/test_compatmode.html
new file mode 100644
index 0000000000..82121b2fd6
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_compatmode.html
@@ -0,0 +1,100 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
+    <title>Mochitest for DOCTYPE parsing</title>
+
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=363883">Mozilla Bug 363883</a>
+
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+var doctypes = [
+/* from bug 363883 */
+"BackCompat", "<!DOCTYPE>",
+"BackCompat", "<!DOCTYPEz>",
+"BackCompat", "<! DOCTYPE>",
+"BackCompat", "<!zDOCTYPE>",
+"CSS1Compat", "<!DOCTYPEHTML>",
+"BackCompat", "<!DOCTYPEz HTML>",
+"CSS1Compat", "<!DOCTYPE HTML>",
+"BackCompat", "<!zDOCTYPE HTML>",
+"BackCompat", "<!DOCTYPE HTMLz>",
+"BackCompat", "<!DOCTYPE zHTML>",
+"BackCompat", "<!DOCTYPE XHTML>",
+"BackCompat", "<!DOCTYPE zzHTML>",
+"BackCompat", "<!DOCTYPEzHTML>",
+"BackCompat", "<!DOCTYPEzzHTML>",
+"BackCompat", '<!DOCTYPE "bla">',
+"BackCompat", '<!DOCTYPE HTML "bla">',
+"BackCompat", '<!DOCTYPE HTML "html">',
+"BackCompat", "<!DOCTYPE PUBLIC>",
+"BackCompat", '<!DOCTYPE PUBLIC "bla">',
+"BackCompat", '<!DOCTYPE PUBLIC "html">',
+"CSS1Compat", '<!DOCTYPE HTML PUBLIC "bla">',
+"BackCompat", '<!DOCTYPE HTML PUBLIC "html">',
+"BackCompat", '<!DOCTYPEz HTML PUBLIC "html">',
+"BackCompat", '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2//en">',
+"BackCompat", '<!DOCTYPEz HTML PUBLIC "-//IETF//DTD HTML 3.2//en">',
+"BackCompat", '<!DOCTYPE HTMLz PUBLIC "DTD HTML 3.2">',
+"BackCompat", '<!DOCTYPE "DTD HTML 3.2">',
+/* end from bug 363883 */
+// from bug 502600
+"BackCompat", '<!doctype HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">',
+];
+
+window.addEventListener("message", verifyResult);
+
+function verifyResult(event) {
+  let i = event.data.index;
+  let curFrame = document.getElementById("test" + i);
+  let mode = SpecialPowers.wrap(curFrame).contentDocument.compatMode;
+  is(mode, doctypes[i], doctypes[i + 1]);
+  if (i == doctypes.length - 2) {
+    window.removeEventListener("message", verifyResult);
+    SimpleTest.finish();
+  }
+}
+
+// //
+// Insert a hidden iframe into the document, with the src
+// containing the test doctype.  The iframe's onload
+// function is set to call the test's verification step.
+//
+function insert_iframe(index, doctype) {
+  var elm = document.createElement("iframe");
+  elm.setAttribute("id", "test" + index);
+  elm.setAttribute("src", "data:text/html," + doctype +
+    '<html><body onload="parent.postMessage({index:' + index + '},\'*\');"></body>');
+  elm.setAttribute("style", "display:none");
+  document.getElementsByTagName("body")[0].appendChild(elm);
+}
+
+// //
+// Iterate over the tests
+//
+function doTest() {
+  for (var i = 0; i < doctypes.length; i += 2) {
+    insert_iframe(i, doctypes[i + 1]);
+  }
+}
+
+// //
+// Run the compatbility mode tests.
+//
+SimpleTest.waitForExplicitFinish();
+doTest();
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_html5_tree_construction.html b/parser/htmlparser/tests/mochitest/test_html5_tree_construction.html
new file mode 100644
index 0000000000..fe755a7248
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_html5_tree_construction.html
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=366936
+-->
+<head>
+  <meta charset=utf-8>
+  <title>Test for Bug 366936</title>
+  <script type="text/javascript" 
+	  src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" 
+        href="/tests/SimpleTest/test.css" /> 
+  <script type="application/javascript"
+          src="parser_datreader.js"></script>
+  <script type="application/javascript"
+          src="html5_tree_construction_exceptions.js"></script>
+  <script class="testbody" type="application/javascript">
+   var parserDatFiles = ["adoption01.dat",
+                         "adoption02.dat",
+                         "comments01.dat",
+                         "doctype01.dat",
+                         "domjs-unsafe.dat",
+                         "entities01.dat",
+                         "entities02.dat",
+                         "html5test-com.dat",
+                         "inbody01.dat",
+                         "isindex.dat",
+                         "pending-spec-changes.dat",
+                         "pending-spec-changes-plain-text-unsafe.dat",
+                         "plain-text-unsafe.dat",
+                         "scripted/adoption01.dat",
+                         "scripted/webkit01.dat",
+                         "scripted/ark.dat",
+                         "scriptdata01.dat",
+                         "tables01.dat",
+                         "template.dat",
+                         "tests10.dat",
+                         "tests11.dat",
+                         "tests12.dat",
+                         "tests14.dat",
+                         "tests15.dat",
+                         "tests16.dat"];
+
+  </script>
+  <script type="application/javascript"
+          src="parser_web_testrunner.js"></script>
+</head>
+<body>
+<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=366936"
+   target="_blank">Mozilla Bug 366936</a>
+<div id="content">
+<iframe src="" id="testframe"></iframe>
+</div>
+See https://github.com/html5lib/html5lib-tests for original test data<br>
+<div id="display">
+
+</div>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_html5_tree_construction_part2.html b/parser/htmlparser/tests/mochitest/test_html5_tree_construction_part2.html
new file mode 100644
index 0000000000..fa64788fc0
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_html5_tree_construction_part2.html
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=366936
+-->
+<head>
+  <meta charset=utf-8>
+  <title>Test for Bug 366936</title>
+  <script type="text/javascript" 
+	  src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" 
+        href="/tests/SimpleTest/test.css" /> 
+  <script type="application/javascript"
+          src="parser_datreader.js"></script>
+  <script type="application/javascript"
+          src="html5_tree_construction_exceptions.js"></script>
+  <script class="testbody" type="application/javascript">
+   var parserDatFiles = ["tests17.dat",
+                         "tests18.dat",
+                         "tests19.dat",
+                         "tests1.dat",
+                         "tests20.dat",
+                         "tests21.dat",
+                         "tests22.dat",
+                         "tests23.dat",
+                         "tests24.dat",
+                         "tests25.dat",
+                         "tests26.dat",
+                         "tests2.dat",
+                         "tests3.dat",
+                         "tests4.dat",
+                         "tests5.dat",
+                         "tests6.dat",
+                         "tests7.dat",
+                         "tests8.dat",
+                         "tests9.dat",
+                         "tests_innerHTML_1.dat",
+                         "tricky01.dat",
+                         "webkit01.dat",
+                         "webkit02.dat",
+                         "main-element.dat",
+                         "foreign-fragment.dat",
+                         "ruby.dat"];
+  </script>
+  <script type="application/javascript"
+          src="parser_web_testrunner.js"></script>
+</head>
+<body>
+<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=366936"
+   target="_blank">Mozilla Bug 366936</a>
+<div id="content">
+<iframe src="" id="testframe"></iframe>
+</div>
+See https://github.com/html5lib/html5lib-tests for original test data<br>
+<div id="display">
+
+</div>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/mochitest/test_img_picture_preload.html b/parser/htmlparser/tests/mochitest/test_img_picture_preload.html
new file mode 100644
index 0000000000..295993060b
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_img_picture_preload.html
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1067345
+-->
+<head>
+  <title>Test for Bug 1067345</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+  <script>
+    // Ensure srcset/picture are enabled, re-run the test at different DPI
+    // levels to ensure preload step does the right responsive image selection
+
+    SimpleTest.waitForExplicitFinish();
+
+    var testDPIs = [ "1.0", "0.5", "2.0", "1.5" ];
+    var iframe = document.createElement("iframe");
+
+    // These accessed by child frame
+    var currentDPI;
+
+    document.body.appendChild(iframe);
+
+    SpecialPowers.pushPrefEnv({"set": [ [ "dom.image.srcset.enabled", true ],
+                                        [ "dom.image.picture.enabled", true ]] },
+                              function() {
+      // Reset the sjs helper so repeat runs work
+      resetRequests();
+      setTimeout(nextTest, 0);
+    });
+
+    function resetRequests() {
+      // Ask the SJS to reset requests
+      var request = new XMLHttpRequest();
+      request.open("GET", "./file_img_picture_preload.sjs?reset", false);
+      request.send(null);
+      is(request.status, 200, "Sending reset to helper should succeed");
+      // Script responds with pre-reset request count
+      var previousRequests = +request.responseText;
+
+      return previousRequests;
+    }
+
+    // Called when iframe is finished
+    function childTestFinished(requestsMade) {
+      setTimeout(function() {
+        // Reset sjs, ensure no new requests appeared after test finished
+        var requestsCleared = resetRequests();
+        is(requestsCleared, requestsMade,
+           "Should not have recorded new requests after test iteration completed");
+
+        setTimeout(nextTest, 0);
+      }, 0);
+    }
+
+    function nextTest() {
+      // Re-run test for each DPI level
+      if (testDPIs.length) {
+        currentDPI = testDPIs.pop();
+        info("Starting test for DPI: " + currentDPI);
+        // To avoid spurious image loads being reported when the resolution changes,
+        // load an intermediate iframe.
+        iframe.src = "about:blank";
+        iframe.addEventListener("load", function() {
+          SpecialPowers.pushPrefEnv({"set": [ [ "layout.css.devPixelsPerPx", currentDPI ]] },
+                                    function() {
+            // Make sure we trigger a layout flush so that the frame is sized
+            // appropriately after the DPI changes.
+            iframe.getBoundingClientRect();
+            // Clear image cache for next run (we don't try to validate cached items
+            // in preload).
+            SpecialPowers.Cc["@mozilla.org/image/tools;1"]
+                         .getService(SpecialPowers.Ci.imgITools)
+                         .getImgCacheForDocument(iframe.contentDocument)
+                         .clearCache(false);
+            iframe.src = "./file_img_picture_preload.html?" + currentDPI;
+          });
+        }, {once: true});
+      } else {
+        SimpleTest.finish();
+      }
+    }
+  </script>
+
+</body>
+</html>
diff --git a/parser/htmlparser/tests/mochitest/test_xml_mislabeled.html b/parser/htmlparser/tests/mochitest/test_xml_mislabeled.html
new file mode 100644
index 0000000000..0865647389
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_xml_mislabeled.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html><meta charset=utf-8>
+<title>Test for mislabeled or unlabeled XML entities with U+xxD8</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css" />
+<body>
+<script class="testbody">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+
+var declaredEncodings = [null, "utf-8", "uTf-8", "UTF-8", "utf-16", "uTf-16", "UTF-16"];
+var actualEncodings = ["utf-8", "utf-16be", "utf-16le"];
+var i = 0, j = 0;
+testxhr(declaredEncodings[i], actualEncodings[j]);
+
+function testxhr(declaredEncoding, actualEncoding) {
+  // utf-16 XML requres the BOM
+  var bom = actualEncoding.startsWith("utf-16") ? "\uFEFF" : "";
+  var xmlDecl = declaredEncoding ? '<?xml version="1.0" encoding="' + declaredEncoding + '" ?>\n' : "";
+  // The test string need to contain U+xxD8 (bug 860180)
+  var xmlString = bom + xmlDecl + "<test>testハヒフヘホ</test>";
+  var xml = new TextEncoder(actualEncoding).encode(xmlString);
+  var description = declaredEncoding ? " labeled with " + declaredEncoding : " without XML declaration";
+  if (!declaredEncoding || actualEncoding !== declaredEncoding.toLowerCase()) {
+    description += " but actually encoded with " + actualEncoding;
+  }
+  var xhr = new XMLHttpRequest();
+  var url = URL.createObjectURL(new Blob([xml], {type: "text/xml"}));
+  xhr.open("GET", url);
+  xhr.send();
+  xhr.onload = xhr.onerror = function(e) {
+    URL.revokeObjectURL(url);
+    is(e.type, "load", "xhr loading should succeed for XML" + description);
+    is(xhr.responseXML.documentElement.textContent, "testハヒフヘホ",
+       "response should be available for XML" + description);
+    testiframe(description, xml);
+  };
+}
+
+function testiframe(description, xml) {
+  var iframe = document.createElement("iframe");
+  var url = URL.createObjectURL(new Blob([xml], {type: "text/xml"}));
+  iframe.src = url;
+  iframe.onload = iframe.onerror = function(e) {
+    URL.revokeObjectURL(url);
+    is(e.type, "load", "iframe loading should succeed for XML" + description);
+    is(iframe.contentDocument.documentElement.textContent, "testハヒフヘホ",
+       "iframe content should be available for XML" + description);
+    if (++i >= declaredEncodings.length) {
+      i = 0;
+      if (++j >= actualEncodings.length) {
+        SimpleTest.finish();
+        return;
+      }
+    }
+    testxhr(declaredEncodings[i], actualEncodings[j]);
+  };
+  document.body.appendChild(iframe);
+}
+</script>
+<div id="display"></div>
+</body>
diff --git a/parser/htmlparser/tests/mochitest/test_xml_parse_error.html b/parser/htmlparser/tests/mochitest/test_xml_parse_error.html
new file mode 100644
index 0000000000..5c023ecfbd
--- /dev/null
+++ b/parser/htmlparser/tests/mochitest/test_xml_parse_error.html
@@ -0,0 +1,79 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title><!-- TODO: insert title here --></title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+  <script>
+    function getExpectedError(string, filename=location.href) {
+      let lines = string.split(/\r\n|\r|\n/);
+      let line, column;
+      let errorLine;
+      for (line = 0; line < lines.length; ++line) {
+        errorLine = lines[line];
+        // The error starts at the opening '<' of '<b>'.
+        column = errorLine.search("<<b>") + 1;
+        if (column > 0) {
+          // Line and column are 1-based.
+          line += 1;
+          column += 1;
+          break;
+        }
+      }
+
+      let expectedError = `XML Parsing Error: not well-formed
+Location: ${filename}
+Line Number ${line}, Column ${column}:${errorLine}
+${"^".padStart(column, "-")}`;
+      return expectedError;
+    }
+
+    function getParseError(string) {
+      let error = new window.DOMParser()
+        .parseFromString(string, "text/xml")
+        .getElementsByTagName("parsererror")[0].textContent;
+      return [error, getExpectedError(string)];
+    }
+
+    SimpleTest.waitForExplicitFinish();
+
+    function runTest() {
+      let [error, expectedError] = getParseError("<p>Not a <<b>well-formed</b> xml string</p>");
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError("<p>Not \na <<b>well-formed</b> xml string</p>");
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError("<p>Not \na <<b>well-formed</b> xml string</p>");
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError("<p>Not a <<b>well-fo\nrmed</b> xml string</p>");
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError(`<p>Not ${' '.repeat(512)} a <<b>well-formed</b> xml string</p>`);
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError(`<p>${' '.repeat(505)}<br>${' '.repeat(512)}<<b>Not a well-formed</b> xml string</p>`);
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      [error, expectedError] = getParseError(`<p>${' '.repeat(2048)}<br>${' '.repeat(512)}<<b>Not a well-formed</b> xml string</p>`);
+      is(error, expectedError, "Check that parsererror contains the right data.");
+
+      fetch("file_xml_parse_error.xml").then(response => response.text()).then(string => {
+        let doc = document.getElementById("frame").contentDocument;
+        error = doc.documentElement.textContent;
+        expectedError = getExpectedError(string, doc.location);
+        is(error, expectedError, "Check that parsererror contains the right data.");
+
+        SimpleTest.finish();
+      });
+    }
+  </script>
+</head>
+<body onload="runTest()">
+<p id="display"><iframe id="frame" src="file_xml_parse_error.xml"></iframe></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/after-1kb-ref.html b/parser/htmlparser/tests/reftest/after-1kb-ref.html
new file mode 100644
index 0000000000..edb0ae9c72
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-1kb-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>In <code>head</code>, after first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-1kb.html b/parser/htmlparser/tests/reftest/after-1kb.html
new file mode 100644
index 0000000000..01eedca187
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-1kb.html
@@ -0,0 +1,955 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/after-1kb-ref.html">
+
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+<meta charset="windows-1251">
+</head>
+<body>
+<p>In <code>head</code>, after first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-bogus-after-1kb-ref.html b/parser/htmlparser/tests/reftest/after-bogus-after-1kb-ref.html
new file mode 100644
index 0000000000..c6f129a89e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-bogus-after-1kb-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>After <code>bogus</code>, before <code>head</code> end tag, after first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-bogus-after-1kb.html b/parser/htmlparser/tests/reftest/after-bogus-after-1kb.html
new file mode 100644
index 0000000000..f44fda1e6d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-bogus-after-1kb.html
@@ -0,0 +1,933 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/after-bogus-after-1kb-ref.html">
+
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+
+
+<bogus><meta charset="windows-1251">
+</head>
+<body>
+<p>After <code>bogus</code>, before <code>head</code> end tag, after first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-bogus-ref.html b/parser/htmlparser/tests/reftest/after-bogus-ref.html
new file mode 100644
index 0000000000..f8080e60aa
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-bogus-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta after <code>bogus</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-bogus.html b/parser/htmlparser/tests/reftest/after-bogus.html
new file mode 100644
index 0000000000..7eeedde7af
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-bogus.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/after-bogus-ref.html">
+<bogus><meta charset="windows-1251">
+</head>
+<body>
+<p>Meta after <code>bogus</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf-ref.html b/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf-ref.html
new file mode 100644
index 0000000000..868a9639bf
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>After <code>head</code>, before <code>body</code>, after first kilobyte, with a CRLF in the first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf.html b/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf.html
new file mode 100644
index 0000000000..10a6d1c3d7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-after-1kb-crlf.html
@@ -0,0 +1,927 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/after-head-after-1kb-crlf-ref.html">
+
+
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+</head>
+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, after first kilobyte, with a CRLF in the first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-after-1kb-ref.html b/parser/htmlparser/tests/reftest/after-head-after-1kb-ref.html
new file mode 100644
index 0000000000..bde4745b26
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-after-1kb-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>After <code>head</code>, before <code>body</code>, after first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-after-1kb.html b/parser/htmlparser/tests/reftest/after-head-after-1kb.html
new file mode 100644
index 0000000000..d514fdfbff
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-after-1kb.html
@@ -0,0 +1,933 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/after-head-after-1kb-ref.html">
+
+
+
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+
+
+
+</head>
+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, after first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf-ref.html b/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf-ref.html
new file mode 100644
index 0000000000..0676d7374e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>After <code>head</code>, before <code>body</code>, within first kilobyte, with a CRLF in the first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf.html b/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf.html
new file mode 100644
index 0000000000..e5c95e7036
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-in-1kb-crlf.html
@@ -0,0 +1,932 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/after-head-in-1kb-crlf-ref.html">
+</head>
+
+
+
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+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, within first kilobyte, with a CRLF in the first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-in-1kb-ref.html b/parser/htmlparser/tests/reftest/after-head-in-1kb-ref.html
new file mode 100644
index 0000000000..75fc2dd618
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-in-1kb-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>After <code>head</code>, before <code>body</code>, within first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/after-head-in-1kb.html b/parser/htmlparser/tests/reftest/after-head-in-1kb.html
new file mode 100644
index 0000000000..e73522d373
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/after-head-in-1kb.html
@@ -0,0 +1,938 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/after-head-in-1kb-ref.html">
+</head>
+
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+
+
+
+
+
+
+
+
+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, within first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/baseline-ref.html b/parser/htmlparser/tests/reftest/baseline-ref.html
new file mode 100644
index 0000000000..21b939efe0
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/baseline-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Normal meta.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/baseline.html b/parser/htmlparser/tests/reftest/baseline.html
new file mode 100644
index 0000000000..40bce2f63f
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/baseline.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/baseline-ref.html">
+<meta charset="windows-1251">
+</head>
+<body>
+<p>Normal meta.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/bug1153920-1-ref.html b/parser/htmlparser/tests/reftest/bug1153920-1-ref.html
new file mode 100644
index 0000000000..6c7e8fb13c
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1153920-1-ref.html
@@ -0,0 +1,4 @@
+<html><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">a</span> <span class="attribute-name">href</span>='<a class="attribute-value" href="?a=b&amp;c=d&amp;a0b=c&amp;copy=1&amp;noti=n&amp;not=in&amp;notin=%26%238713%3B%AC&amp;;&amp;%20&amp;">?a=b<span><span>&amp;</span>c</span>=d<span><span>&amp;</span>a</span>0b=c<span><span>&amp;</span>copy</span>=1<span><span>&amp;</span>noti</span>=n<span><span>&amp;</span>not</span>=in<span><span>&amp;</span>notin</span>=<span class="entity"><span>&amp;</span>notin;</span><span class="entity"><span>&amp;</span>not;</span><span><span>&amp;</span></span>;<span><span>&amp;</span></span> <span><span>&amp;</span></span></a>'&gt;</span><span>Link</span><span>&lt;/<span class="end-tag">a</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Text: ?a=b<span><span>&amp;</span>c</span>=d<span><span>&amp;</span>a</span>0b=c<span class="error entity" title="Named character reference was not terminated by a semicolon. (Or “&amp;” should have been escaped as “&amp;amp;”.)"><span>&amp;</span>copy</span>=1<span class="error entity" title="Named character reference was not terminated by a semicolon. (Or “&amp;” should have been escaped as “&amp;amp;”.)"><span>&amp;</span>noti</span>=n<span class="error entity" title="Named character reference was not terminated by a semicolon. (Or “&amp;” should have been escaped as “&amp;amp;”.)"><span>&amp;</span>not</span>=in<span class="error entity" title="Named character reference was not terminated by a semicolon. (Or “&amp;” should have been escaped as “&amp;amp;”.)"><span>&amp;</span>notin</span>=<span class="entity"><span>&amp;</span>notin;</span><span class="entity"><span>&amp;</span>not;</span><span><span>&amp;</span></span>;<span><span>&amp;</span></span> <span><span>&amp;</span></span></span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line4"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/bug1153920-1.html b/parser/htmlparser/tests/reftest/bug1153920-1.html
new file mode 100644
index 0000000000..f36b2b0581
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1153920-1.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<a href='?a=b&c=d&a0b=c&copy=1&noti=n&not=in&notin=&notin;&not;&;& &'>Link</a>
+<p>Text: ?a=b&c=d&a0b=c&copy=1&noti=n&not=in&notin=&notin;&not;&;& &</p>
diff --git a/parser/htmlparser/tests/reftest/bug1319410-1-ref.html b/parser/htmlparser/tests/reftest/bug1319410-1-ref.html
new file mode 100644
index 0000000000..abce6d8540
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1319410-1-ref.html
@@ -0,0 +1,6 @@
+<html><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span class="comment">&lt;!-- -- --&gt;</span><span>
+<span id="line3"></span></span><span class="error comment" title="Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).">&lt;!-- &lt;!-- --&gt;</span><span> --&gt;
+<span id="line4"></span></span><span class="error comment" title="Premature end of comment. Use “-->” to end a comment properly.">&lt;!--&gt;</span><span>
+<span id="line5"></span></span><span class="comment">&lt;!--&lt;!--&gt;
+<span id="line6"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/bug1319410-1.html b/parser/htmlparser/tests/reftest/bug1319410-1.html
new file mode 100644
index 0000000000..04363210af
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1319410-1.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<!-- -- -->
+<!-- <!-- --> -->
+<!-->
+<!--<!-->
diff --git a/parser/htmlparser/tests/reftest/bug1636607-1-ref.html b/parser/htmlparser/tests/reftest/bug1636607-1-ref.html
new file mode 100644
index 0000000000..b5e24f87a7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1636607-1-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<style>
+div { border: medium solid blue }
+span { background: #9090ff; }
+span.test::before {
+  white-space: pre;
+  content: "\A";
+}
+</style>
+<p>This document is in <span id="mode"></span> mode.</p>
+<p>This is a test for the line height quirk which is present in limited-quirks mode <b>and</b> quirks mode:</p>
+<div><span style="font-size: 50%">hello<br>hello</span></div>
+<p>This is a test for the hashless hex color quirk which is present in quirks mode <b>only</b>:</p>
+<div style="background-color: 9090ff">test</div>
+
+<script>
+document.getElementById("mode").innerText = document.compatMode;
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug1636607-1.html b/parser/htmlparser/tests/reftest/bug1636607-1.html
new file mode 100644
index 0000000000..af2c2cb3e8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1636607-1.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//FR" "http://www.w3.org/TR/html4/loose.dtd">
+<style>
+div { border: medium solid blue }
+span { background: #9090ff; }
+span.test::before {
+  white-space: pre;
+  content: "\A";
+}
+</style>
+<p>This document is in <span id="mode"></span> mode.</p>
+<p>This is a test for the line height quirk which is present in limited-quirks mode <b>and</b> quirks mode:</p>
+<div><span style="font-size: 50%">hello<br>hello</span></div>
+<p>This is a test for the hashless hex color quirk which is present in quirks mode <b>only</b>:</p>
+<div style="background-color: 9090ff">test</div>
+
+<script>
+document.getElementById("mode").innerText = document.compatMode;
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug1636607-2-ref.html b/parser/htmlparser/tests/reftest/bug1636607-2-ref.html
new file mode 100644
index 0000000000..e82fd73824
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1636607-2-ref.html
@@ -0,0 +1,17 @@
+<style>
+div { border: medium solid blue }
+span { background: #9090ff; }
+span.test::before {
+  white-space: pre;
+  content: "\A";
+}
+</style>
+<p>This document is in <span id="mode"></span> mode.</p>
+<p>This is a test for the line height quirk which is present in limited-quirks mode <b>and</b> quirks mode:</p>
+<div><span style="font-size: 50%">hello<br>hello</span></div>
+<p>This is a test for the hashless hex color quirk which is present in quirks mode <b>only</b>:</p>
+<div style="background-color: 9090ff">test</div>
+
+<script>
+document.getElementById("mode").innerText = document.compatMode;
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug1636607-2.html b/parser/htmlparser/tests/reftest/bug1636607-2.html
new file mode 100644
index 0000000000..f551df5ac1
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1636607-2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//FR">
+<style>
+div { border: medium solid blue }
+span { background: #9090ff; }
+span.test::before {
+  white-space: pre;
+  content: "\A";
+}
+</style>
+<p>This document is in <span id="mode"></span> mode.</p>
+<p>This is a test for the line height quirk which is present in limited-quirks mode <b>and</b> quirks mode:</p>
+<div><span style="font-size: 50%">hello<br>hello</span></div>
+<p>This is a test for the hashless hex color quirk which is present in quirks mode <b>only</b>:</p>
+<div style="background-color: 9090ff">test</div>
+
+<script>
+document.getElementById("mode").innerText = document.compatMode;
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug1650087-1-ref.html b/parser/htmlparser/tests/reftest/bug1650087-1-ref.html
new file mode 100644
index 0000000000..284f097100
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1650087-1-ref.html
@@ -0,0 +1,8 @@
+<html><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">td</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">tr</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line4"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">thead</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line5"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">tbody</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line6"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">tfoot</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line7"></span></span><span>&lt;<span class="start-tag">template</span>&gt;</span><span></span><span>&lt;<span class="start-tag">colgroup</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">template</span>&gt;</span><span>
+<span id="line8"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/bug1650087-1.html b/parser/htmlparser/tests/reftest/bug1650087-1.html
new file mode 100644
index 0000000000..c5b92f1615
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1650087-1.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<template><td></template>
+<template><tr></template>
+<template><thead></template>
+<template><tbody></template>
+<template><tfoot></template>
+<template><colgroup></template>
diff --git a/parser/htmlparser/tests/reftest/bug1726374-1-ref.html b/parser/htmlparser/tests/reftest/bug1726374-1-ref.html
new file mode 100644
index 0000000000..1bd351963d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1726374-1-ref.html
@@ -0,0 +1,2 @@
+<html><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span></span><span class="comment">&lt;!-- a &lt;!--&gt;</span><span>b
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/bug1726374-1.html b/parser/htmlparser/tests/reftest/bug1726374-1.html
new file mode 100644
index 0000000000..edcb3952c5
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1726374-1.html
@@ -0,0 +1 @@
+<!DOCTYPE html><!-- a <!-->b
diff --git a/parser/htmlparser/tests/reftest/bug1749522-1-ref.txt b/parser/htmlparser/tests/reftest/bug1749522-1-ref.txt
new file mode 100644
index 0000000000..c95d7230fd
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1749522-1-ref.txt
@@ -0,0 +1,3 @@
+<script>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+To jest test kodowania znaków. W przypadku niektórych języków, które używają znaków łacińskich, potrzebujemy więcej danych, aby podjąć decyzję.
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug1749522-1.txt b/parser/htmlparser/tests/reftest/bug1749522-1.txt
new file mode 100644
index 0000000000..3520d89838
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug1749522-1.txt
@@ -0,0 +1,3 @@
+<script>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+To jest test kodowania znak�w. W przypadku niekt�rych j�zyk�w, kt�re u�ywaj� znak�w �aci�skich, potrzebujemy wi�cej danych, aby podj�� decyzj�.
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug482921-1-ref.html b/parser/htmlparser/tests/reftest/bug482921-1-ref.html
new file mode 100644
index 0000000000..71c0f91c08
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug482921-1-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="wrap highlight"><pre id><span class="doctype">&lt;!DOCTYPE html&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">html</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">head</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">title</span>&gt;</span><span>Title</span><span>&lt;/<span class="end-tag">title</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">script</span>&gt;</span>
+<span id></span>var lt = "&lt;";
+<span id></span>&lt;!--
+<span id></span>var s = "&lt;script&gt;foo&lt;/script&gt;";
+<span id></span>--&gt;
+<span id></span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span></span><span class="comment">&lt;!-- Comment. --&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">style</span>&gt;</span>
+<span id></span>/* &lt;/foo&gt; */
+<span id></span><span>&lt;/<span class="end-tag">style</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">head</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">body</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Entity: <span class="entity"><span>&amp;</span>amp; </span></span><span>&lt;/<span class="end-tag">p</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">iframe</span>&gt;</span>&lt;img&gt;<span>&lt;/<span class="end-tag">iframe</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">noscript</span>&gt;</span>&lt;p&gt;Not para&lt;/p&gt;<span>&lt;/<span class="end-tag">noscript</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">svg</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">title</span>&gt;</span><span></span><span class="cdata">&lt;![CDATA[bar]]&gt;</span><span></span><span>&lt;/<span class="end-tag">title</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span class="comment">&lt;!-- this is a comment --&gt;</span><span></span><span>&lt;/<span class="end-tag">script</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">svg</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">body</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">html</span>&gt;</span>
+<span id></span>
+</pre>
+<!-- View source CSS matches the <pre id> and <span id> elements and produces line numbers. -->
diff --git a/parser/htmlparser/tests/reftest/bug482921-1.html b/parser/htmlparser/tests/reftest/bug482921-1.html
new file mode 100644
index 0000000000..ca603844f2
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug482921-1.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Title</title>
+<script>
+var lt = "<";
+<!--
+var s = "<script>foo</script>";
+-->
+</script><!-- Comment. -->
+<style>
+/* </foo> */
+</style>
+</head>
+<body>
+<p>Entity: &amp; </p>
+<iframe><img></iframe>
+<noscript><p>Not para</p></noscript>
+<svg>
+<title><![CDATA[bar]]></title>
+<script><!-- this is a comment --></script>
+</svg>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/bug482921-2-ref.html b/parser/htmlparser/tests/reftest/bug482921-2-ref.html
new file mode 100644
index 0000000000..d764c70bca
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug482921-2-ref.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="wrap highlight"><pre id><span class="pi">&lt;?xml version="1.0" encoding="utf-8"?&gt;</span>
+<span id></span><span class="pi">&lt;?foo bar?&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">html</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">head</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">title</span>&gt;</span><span>Title</span><span>&lt;/<span class="end-tag">title</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">script</span>&gt;</span>
+<span id></span>var s = "<span>&lt;<span class="start-tag">script</span>&gt;</span><span>foo</span><span>&lt;/<span class="end-tag">script</span>&gt;</span>";
+<span id></span><span class="comment">&lt;!--
+<span id></span>var s = "&lt;script&gt;foo&lt;/script&gt;";
+<span id></span>--&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span></span>
+<span id></span><span>&lt;<span class="start-tag">style</span>&gt;</span>
+<span id></span>/* <span>&lt;<span class="start-tag">foo</span><span>/</span>&gt;</span> */
+<span id></span><span>&lt;/<span class="end-tag">style</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">head</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">body</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Entity: <span class="entity"><span>&amp;</span>amp; </span></span><span>&lt;/<span class="end-tag">p</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">iframe</span>&gt;</span><span></span><span>&lt;<span class="start-tag">img</span>&gt;</span><span>&lt;/<span class="end-tag">iframe</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">noscript</span>&gt;</span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Not para</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>&lt;/<span class="end-tag">noscript</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">svg</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">title</span>&gt;</span><span></span><span class="cdata">&lt;![CDATA[bar]]&gt;</span><span></span><span>&lt;/<span class="end-tag">title</span>&gt;</span>
+<span id></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span class="comment">&lt;!-- this is a comment --&gt;</span><span></span><span>&lt;/<span class="end-tag">script</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">svg</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">body</span>&gt;</span>
+<span id></span><span>&lt;/<span class="end-tag">html</span>&gt;</span>
+<span id></span>
+</pre>
+<!-- View source CSS matches the <pre id> and <span id> elements and produces line numbers. -->
diff --git a/parser/htmlparser/tests/reftest/bug482921-2.xhtml b/parser/htmlparser/tests/reftest/bug482921-2.xhtml
new file mode 100644
index 0000000000..4d3f0b6a73
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug482921-2.xhtml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<?foo bar?>
+<html>
+<head>
+<title>Title</title>
+<script>
+var s = "<script>foo</script>";
+<!--
+var s = "<script>foo</script>";
+-->
+</script>
+<style>
+/* <foo/> */
+</style>
+</head>
+<body>
+<p>Entity: &amp; </p>
+<iframe><img></iframe>
+<noscript><p>Not para</p></noscript>
+<svg>
+<title><![CDATA[bar]]></title>
+<script><!-- this is a comment --></script>
+</svg>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/bug535530-1-ref.html b/parser/htmlparser/tests/reftest/bug535530-1-ref.html
new file mode 100644
index 0000000000..22d0dc0b0b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug535530-1-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html><meta charset=utf-8>
+XX&amp;XX XX&amp;nXX XX&amp;noXX XX¬XX XX¬iXX XX¬inXX XX&amp;;XX XX&amp;n;XX XX&amp;no;XX XX¬XX XX¬i;XX XX∉XX
diff --git a/parser/htmlparser/tests/reftest/bug535530-1.html b/parser/htmlparser/tests/reftest/bug535530-1.html
new file mode 100644
index 0000000000..63f2d8782e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug535530-1.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+XX&XX
+XX&nXX
+XX&noXX
+XX&notXX
+XX&notiXX
+XX&notinXX
+XX&;XX
+XX&n;XX
+XX&no;XX
+XX&not;XX
+XX&noti;XX
+XX&notin;XX
+
diff --git a/parser/htmlparser/tests/reftest/bug535530-2-ref.html b/parser/htmlparser/tests/reftest/bug535530-2-ref.html
new file mode 100644
index 0000000000..174e94dc8b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug535530-2-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="wrap highlight"><pre id><span class="doctype">&lt;!DOCTYPE html&gt;</span>
+<span id></span>XX&amp;XX
+<span id></span>XX&amp;nXX
+<span id></span>XX&amp;noXX
+<span id></span>XX<span class="error entity">&amp;not</span>XX
+<span id></span>XX<span class="error entity">&amp;noti</span>XX
+<span id></span>XX<span class="error entity">&amp;notin</span>XX
+<span id></span>XX&amp;;XX
+<span id></span>XX<span class="error">&amp;</span>n;XX
+<span id></span>XX<span class="error">&amp;</span>no;XX
+<span id></span>XX<span class="entity">&amp;not;</span>XX
+<span id></span>XX<span class="error entity">&amp;noti</span>;XX
+<span id></span>XX<span class="entity">&amp;notin;</span>XX
+<span id></span>
+<span id></span>
+</pre>
+<!-- View source CSS matches the <pre id> and <span id> elements and produces line numbers. -->
diff --git a/parser/htmlparser/tests/reftest/bug535530-2.html b/parser/htmlparser/tests/reftest/bug535530-2.html
new file mode 100644
index 0000000000..63f2d8782e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug535530-2.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+XX&XX
+XX&nXX
+XX&noXX
+XX&notXX
+XX&notiXX
+XX&notinXX
+XX&;XX
+XX&n;XX
+XX&no;XX
+XX&not;XX
+XX&noti;XX
+XX&notin;XX
+
diff --git a/parser/htmlparser/tests/reftest/bug566280-1-ref.html b/parser/htmlparser/tests/reftest/bug566280-1-ref.html
new file mode 100644
index 0000000000..6585cac38f
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug566280-1-ref.html
@@ -0,0 +1,2 @@
+<body>hello world
+
diff --git a/parser/htmlparser/tests/reftest/bug566280-1.html b/parser/htmlparser/tests/reftest/bug566280-1.html
new file mode 100644
index 0000000000..3aa60caf34
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug566280-1.html
diff --git a/parser/htmlparser/tests/reftest/bug569229-1-ref.xml b/parser/htmlparser/tests/reftest/bug569229-1-ref.xml
new file mode 100644
index 0000000000..652f1d7da8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug569229-1-ref.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" standalone="yes" ?>
+<html xmlns="http://www.w3.org/1999/xhtml"><p>abcd</p></html>
diff --git a/parser/htmlparser/tests/reftest/bug569229-1.xml b/parser/htmlparser/tests/reftest/bug569229-1.xml
new file mode 100644
index 0000000000..2e1ff75603
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug569229-1.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" standalone="yes" ?>
+<!DOCTYPE html [
+  <!ENTITY inner "<script src='script.js'></script><p>abcd</p>">
+  <!ENTITY outer "&inner;">
+]>
+<html xmlns="http://www.w3.org/1999/xhtml">&outer;</html>
diff --git a/parser/htmlparser/tests/reftest/bug577418-1-ref.html b/parser/htmlparser/tests/reftest/bug577418-1-ref.html
new file mode 100644
index 0000000000..ff773d5364
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug577418-1-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<style>
+html {
+  background-color: lime;
+}
+</style>
diff --git a/parser/htmlparser/tests/reftest/bug577418-1.html b/parser/htmlparser/tests/reftest/bug577418-1.html
new file mode 100644
index 0000000000..cfd53be0a8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug577418-1.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html style="width:100%;height:100%;margin:0;border:0;overflow:hidden">
+<body style="width:100%;height:100%;margin:0;border:0;overflow:hidden">
+<svg style="width:100%;height:100%">
+ <rect height="100%" width="100%" fill="red"/>
+   <foreignObject>
+     <html>
+       <body>
+       </body>
+     </html>
+    </foreignObject>
+  <rect height="100%" width="100%" fill="lime"/>
+</svg>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/bug582788-1-ref.html b/parser/htmlparser/tests/reftest/bug582788-1-ref.html
new file mode 100644
index 0000000000..c1f684807a
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug582788-1-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=utf-8">
+<title>Not ISO-10646</title>
+</head>
+<body>
+<p>Not ISO-10646</p>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug582788-1.html b/parser/htmlparser/tests/reftest/bug582788-1.html
new file mode 100644
index 0000000000..ee31b3de9d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug582788-1.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=iso-10646">
+<title>Not ISO-10646</title>
+</head>
+<body>
+<p>Not ISO-10646</p>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug582940-1-ref.html b/parser/htmlparser/tests/reftest/bug582940-1-ref.html
new file mode 100644
index 0000000000..7209c8e69e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug582940-1-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<head>
+<meta charset=utf-8>
+<title>Fragment nav</title>
+<script>
+function loaded() {
+  document.documentElement.removeAttribute("class");
+}
+</script>
+</head>
+<body onload='setTimeout(loaded, 10);'>
+<iframe src="frame582940-ref.html#ref"></iframe>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug582940-1.html b/parser/htmlparser/tests/reftest/bug582940-1.html
new file mode 100644
index 0000000000..fd721a8bc3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug582940-1.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<head>
+<meta charset=utf-8>
+<title>Fragment nav</title>
+<script>
+function loaded() {
+  document.documentElement.removeAttribute("class");
+}
+</script>
+</head>
+<body onload='setTimeout(loaded, 10);'>
+<iframe src="frame582940.html#ref%20ref"></iframe>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug592656-1-ref.html b/parser/htmlparser/tests/reftest/bug592656-1-ref.html
new file mode 100644
index 0000000000..824d815633
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug592656-1-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>document.write() from script-inserted inline scripts and script@onload</title>
+</head>
+<body>
+1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/bug592656-1.html b/parser/htmlparser/tests/reftest/bug592656-1.html
new file mode 100644
index 0000000000..769f62f648
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug592656-1.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>document.write() from script-inserted inline scripts and script@onload</title>
+</head>
+<body>
+1
+<script>
+function write(num) {
+  document.write(num + " ");
+}
+function scriptload() {
+  document.write("\u003Cscript src='data:text/javascript,write(9)'>\u003C/script> 10 \u003Cscript>write(11)\u003C/script>");
+  write(12);
+}
+function scripterror() {
+  document.write("\u003Cscript src='data:text/javascript,write(16)'>\u003C/script> 17 \u003Cscript>write(18)\u003C/script>");
+  write(19);
+}
+write(2);
+document.write("\u003Cscript src='data:text/javascript,write(3)'>\u003C/script> 4 \u003Cscript>write(5)\u003C/script>");
+var s = document.createElement("script");
+s.textContent = "write(6)";
+document.body.appendChild(s);
+write(7);
+document.write("\u003Cscript src='data:text/javascript,write(8)' onload='scriptload()'>\u003C/script> 13 \u003Cscript>write(14)\u003C/script>");
+write(15);
+document.write(`\u003Cscript src='nosuchscriptoutthere.js' onload='write("fail")' onerror='scripterror()'>\u003C/script> 20 \u003Cscript>write(21)\u003C/script>`);
+write(22);
+</script>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/bug599320-1-ref.html b/parser/htmlparser/tests/reftest/bug599320-1-ref.html
new file mode 100644
index 0000000000..bb48fe5d25
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug599320-1-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset=utf-8>
+<meta content="width=device-width, initial-scale=1" name="viewport">
+<title>UTF-16 doc</title>
+</head>
+<body>
+<h1>UTF-16 doc</h1>
+
+<p>Euro sign: €</p>
+<p>iframe:</p>
+<iframe src=frame599320-1-ref.html width=300 height=400></iframe>
+
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug599320-1.html b/parser/htmlparser/tests/reftest/bug599320-1.html
new file mode 100644
index 0000000000..590e9126c3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug599320-1.html
diff --git a/parser/htmlparser/tests/reftest/bug608373-1-ref.html b/parser/htmlparser/tests/reftest/bug608373-1-ref.html
new file mode 100644
index 0000000000..69fec47d0f
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug608373-1-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+</head>
+<body>
+  <iframe src="data:text/html,TEXT"></iframe>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug608373-1.html b/parser/htmlparser/tests/reftest/bug608373-1.html
new file mode 100644
index 0000000000..7bc47552f7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug608373-1.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<head>
+<script>
+function write() {
+  document.getElementsByTagName("iframe")[0].contentDocument.write('\u003Cscript src="data:text/javascript,var i = 0;">\u003C\/script>TEXT\u003Cscript>parent.document.documentElement.removeAttribute("class");\u003c/script>');
+}
+</script>
+</head>
+<body onload="write();">
+  <iframe></iframe>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/bug659763-1-ref.html b/parser/htmlparser/tests/reftest/bug659763-1-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-1-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-1.html b/parser/htmlparser/tests/reftest/bug659763-1.html
new file mode 100644
index 0000000000..46dbde092e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-1.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open("text/plain");
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug659763-2-ref.html b/parser/htmlparser/tests/reftest/bug659763-2-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-2-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-2.html b/parser/htmlparser/tests/reftest/bug659763-2.html
new file mode 100644
index 0000000000..c6152193aa
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-2.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open("TEXT/PLAIN");
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug659763-3-ref.html b/parser/htmlparser/tests/reftest/bug659763-3-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-3-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-3.html b/parser/htmlparser/tests/reftest/bug659763-3.html
new file mode 100644
index 0000000000..bd2ed094bc
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-3.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open("foo/bar");
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug659763-4-ref.html b/parser/htmlparser/tests/reftest/bug659763-4-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-4-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-4.html b/parser/htmlparser/tests/reftest/bug659763-4.html
new file mode 100644
index 0000000000..5317186351
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-4.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open("text/html");
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug659763-5-ref.html b/parser/htmlparser/tests/reftest/bug659763-5-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-5-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-5.html b/parser/htmlparser/tests/reftest/bug659763-5.html
new file mode 100644
index 0000000000..23e9fd8e6f
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-5.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open();
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug659763-6-ref.html b/parser/htmlparser/tests/reftest/bug659763-6-ref.html
new file mode 100644
index 0000000000..99429bf4e7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-6-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<iframe src="data:text/html,<i>foo</i>"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug659763-6.html b/parser/htmlparser/tests/reftest/bug659763-6.html
new file mode 100644
index 0000000000..f0a5ea8d3f
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug659763-6.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<iframe></iframe>
+<script>
+var iframe = document.getElementsByTagName("iframe")[0];
+var doc = iframe.contentDocument;
+doc.open("TEXT/HTML");
+doc.write("<i>foo</i>");
+doc.close();
+</script>
diff --git a/parser/htmlparser/tests/reftest/bug673094-1-ref.html b/parser/htmlparser/tests/reftest/bug673094-1-ref.html
new file mode 100644
index 0000000000..f8f8ce5939
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug673094-1-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<title>bidi in attribute</title>
+</head>
+<body>
+<p>Persian <a href="http://en.wiktionary.org/wiki/%D9%81%D8%A7%D8%B1%D8%B3%DB%8C" title="wikt:فارسی‎" >فارسی</a></p>
+</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/bug673094-1.html b/parser/htmlparser/tests/reftest/bug673094-1.html
new file mode 100644
index 0000000000..2fbdbfb10d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug673094-1.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<title>bidi in attribute</title>
+</head>
+<body>
+<p>Persian <a href="http://en.wiktionary.org/wiki/%D9%81%D8%A7%D8%B1%D8%B3%DB%8C" title="wikt:فارسی" >فارسی</a></p>
+</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/bug696651-1-ref.html b/parser/htmlparser/tests/reftest/bug696651-1-ref.html
new file mode 100644
index 0000000000..02f59b7ae6
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug696651-1-ref.html
@@ -0,0 +1 @@
+<!DOCTYPE html>CcBbAa
diff --git a/parser/htmlparser/tests/reftest/bug696651-1.html b/parser/htmlparser/tests/reftest/bug696651-1.html
new file mode 100644
index 0000000000..50a9135aa3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug696651-1.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<body><script>document.write("\u003cscript>document.write(\"\\u003cscript  src='bug696651-external.js'>\\u003c/script>B\"); document.write(\"b\");\u003c/script>A"); document.write("a");</script>
diff --git a/parser/htmlparser/tests/reftest/bug696651-2-ref.html b/parser/htmlparser/tests/reftest/bug696651-2-ref.html
new file mode 100644
index 0000000000..7999785c09
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug696651-2-ref.html
@@ -0,0 +1 @@
+<!DOCTYPE html><iframe src="data:text/html,<!DOCTYPE html>CcBbAa"></iframe>
diff --git a/parser/htmlparser/tests/reftest/bug696651-2.html b/parser/htmlparser/tests/reftest/bug696651-2.html
new file mode 100644
index 0000000000..2d3515b6af
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug696651-2.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<body>
+<iframe></iframe>
+<script>
+var doc = document.getElementsByTagName("iframe")[0].contentDocument;
+doc.open(); doc.write("\u003cscript>document.write(\"\\u003cscript src='bug696651-external.js'>\\u003c/script>B\"); document.write(\"b\");\u003c/script>A"); doc.write("a"); doc.close();</script>
diff --git a/parser/htmlparser/tests/reftest/bug696651-external.js b/parser/htmlparser/tests/reftest/bug696651-external.js
new file mode 100644
index 0000000000..c1c2a8f788
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug696651-external.js
@@ -0,0 +1 @@
+document.write("C"); document.write("c");
diff --git a/parser/htmlparser/tests/reftest/bug700260-1-ref.html b/parser/htmlparser/tests/reftest/bug700260-1-ref.html
new file mode 100644
index 0000000000..0ba4495a09
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug700260-1-ref.html
@@ -0,0 +1,3 @@
+    1
+        2
+            3
diff --git a/parser/htmlparser/tests/reftest/bug700260-1.html b/parser/htmlparser/tests/reftest/bug700260-1.html
new file mode 100644
index 0000000000..37d3008347
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug700260-1.html
@@ -0,0 +1,3 @@
+	1
+		2
+			3
diff --git a/parser/htmlparser/tests/reftest/bug704667-1-ref.html b/parser/htmlparser/tests/reftest/bug704667-1-ref.html
new file mode 100644
index 0000000000..a7a939f3a4
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug704667-1-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="wrap highlight"><pre id><span class="error comment">&lt;!--&gt;</span> <span class="error comment">&lt;!X&gt;</span>
+<span id></span>
+</pre>
+<!-- View source CSS matches the <pre id> and <span id> elements and produces line numbers. -->
diff --git a/parser/htmlparser/tests/reftest/bug704667-1.html b/parser/htmlparser/tests/reftest/bug704667-1.html
new file mode 100644
index 0000000000..553c62b309
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug704667-1.html
@@ -0,0 +1 @@
+<!--> <!X>
diff --git a/parser/htmlparser/tests/reftest/bug731234-1-ref.html b/parser/htmlparser/tests/reftest/bug731234-1-ref.html
new file mode 100644
index 0000000000..897b73ea1b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug731234-1-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="wrap highlight"><pre id><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id></span></span><span>&lt;<span class="start-tag">body</span>&gt;</span><span>
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">script</span> &gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;/<span class="end-tag">script</span>
+<span id></span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>=<a class="attribute-value">bar</a>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>="<a class="attribute-value">bar</a>"&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span>&lt;/<span class="end-tag">script</span> &gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span>&lt;/<span class="end-tag">script</span>
+<span id></span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>=<a class="attribute-value">bar</a>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- </span><span title="End tag had attributes." class="error">&lt;/<span class="end-tag">script</span> <span class="attribute-name">foo</span>="<a class="attribute-value">bar</a>"&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- -</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- --</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>-- --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script&gt; </span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script&gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript &lt;/script&gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script  &gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script  foo&gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script  foo=bar&gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span><span>&lt;<span class="start-tag">script</span>&gt;</span><span></span><span>&lt;!</span><span>--</span><span>&lt;s</span><span>cript&gt; &lt;/script  foo="bar"&gt; --&gt;</span><span>&lt;/<span class="end-tag">script</span>&gt;</span><span>X
+<span id></span></span>
+</pre>
+<!-- View source CSS matches the <pre id> and <span id> elements and produces line numbers. -->
diff --git a/parser/htmlparser/tests/reftest/bug731234-1.html b/parser/htmlparser/tests/reftest/bug731234-1.html
new file mode 100644
index 0000000000..313e44cca7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug731234-1.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<body>
+<script></script>X
+<script></script >X
+<script></script
+>X
+<script></script foo>X
+<script></script foo=bar>X
+<script></script foo="bar">X
+<script><!--</script>X
+<script><!-- </script>X
+<script><!-- </script >X
+<script><!-- </script
+>X
+<script><!-- </script foo>X
+<script><!-- </script foo=bar>X
+<script><!-- </script foo="bar">X
+<script><!-- -</script>X
+<script><!-- --</script>X
+<script><!-- --></script>X
+<script><!--<script> </script> </script>X
+<script><!--<script> </script> --></script>X
+<script><!--<script </script> --></script>X
+<script><!--<script> </script  > --></script>X
+<script><!--<script> </script  foo> --></script>X
+<script><!--<script> </script  foo=bar> --></script>X
+<script><!--<script> </script  foo="bar"> --></script>X
diff --git a/parser/htmlparser/tests/reftest/bug820508-1-ref.html b/parser/htmlparser/tests/reftest/bug820508-1-ref.html
new file mode 100644
index 0000000000..e624b16885
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug820508-1-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<title>main { display: block; }</title>
+<style>div {
+  border: 2px solid blue;
+}</style>
+<div>foo</div><div>bar</div>
diff --git a/parser/htmlparser/tests/reftest/bug820508-1.html b/parser/htmlparser/tests/reftest/bug820508-1.html
new file mode 100644
index 0000000000..60eabee67d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug820508-1.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<title>main { display: block; }</title>
+<style>main {
+  border: 2px solid blue;
+}</style>
+<main>foo</main><main>bar</main>
diff --git a/parser/htmlparser/tests/reftest/bug910588-1-ref.html b/parser/htmlparser/tests/reftest/bug910588-1-ref.html
new file mode 100644
index 0000000000..46133dd2c4
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug910588-1-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html><html><head><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="-moz-tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span></span><span>&lt;<span class="start-tag">table</span>&gt;</span><span></span><span title="Start tag “input” seen in “table”." class="error">&lt;<span class="start-tag">input</span> <span class="attribute-name">type</span>=<a class="attribute-value">hidden</a>&gt;</span><span></span><span>&lt;/<span class="end-tag">table</span>&gt;</span><span>
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/bug910588-1.html b/parser/htmlparser/tests/reftest/bug910588-1.html
new file mode 100644
index 0000000000..d0f5958582
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/bug910588-1.html
@@ -0,0 +1 @@
+<!DOCTYPE html><table><input type=hidden></table>
diff --git a/parser/htmlparser/tests/reftest/document-write-ref.html b/parser/htmlparser/tests/reftest/document-write-ref.html
new file mode 100644
index 0000000000..9902cf77d1
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/document-write-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta from <code>document.write</code> (with concatenation in the middle of <code>charset</code> to require execution for effect).</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/document-write.html b/parser/htmlparser/tests/reftest/document-write.html
new file mode 100644
index 0000000000..b70a15c567
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/document-write.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/document-write-ref.html">
+<script>document.write('<meta char' + 'set="windows-1251">');</script>
+</head>
+<body>
+<p>Meta from <code>document.write</code> (with concatenation in the middle of <code>charset</code> to require execution for effect).</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/frame582940-ref.html b/parser/htmlparser/tests/reftest/frame582940-ref.html
new file mode 100644
index 0000000000..ac665679b5
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/frame582940-ref.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Fragment nav</title>
+</head>
+<body>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p><a name='ref'>Ref!</a></p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/frame582940.html b/parser/htmlparser/tests/reftest/frame582940.html
new file mode 100644
index 0000000000..646b7d5a71
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/frame582940.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>Fragment nav</title>
+</head>
+<body>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p><a name='ref%20ref'>Ref!</a></p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+<p>Filler</p>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/frame599320-1-ref.html b/parser/htmlparser/tests/reftest/frame599320-1-ref.html
new file mode 100644
index 0000000000..735c368f8b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/frame599320-1-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset=utf-8>
+<meta content="width=device-width, initial-scale=1" name="viewport">
+<title>Non-UTF-16 doc</title>
+</head>
+<body>
+<h1>Non-UTF-16 doc</h1>
+
+<p>Euro sign: €</p>
+
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/frame599320-1.html b/parser/htmlparser/tests/reftest/frame599320-1.html
new file mode 100644
index 0000000000..145ee94ba8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/frame599320-1.html
@@ -0,0 +1,1092 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<!-- More than 1 KB of space -->
+
+
+
+
+
+
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+
+
+<meta charset=utf-8>
+<meta content="width=device-width, initial-scale=1" name="viewport">
+<title>Non-UTF-16 doc</title>
+</head>
+<body>
+<h1>Non-UTF-16 doc</h1>
+
+<p>Euro sign: €</p>
+<script>
+window.onload = function() {
+  window.requestAnimationFrame(function() {
+    parent.document.documentElement.removeAttribute("class");
+  });
+}
+</script>
+</body>
+</html>
+
diff --git a/parser/htmlparser/tests/reftest/in-comment-ref.html b/parser/htmlparser/tests/reftest/in-comment-ref.html
new file mode 100644
index 0000000000..94b2016e0d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-comment-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta inside comment.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-comment.html b/parser/htmlparser/tests/reftest/in-comment.html
new file mode 100644
index 0000000000..65828a1872
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-comment.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-comment-ref.html">
+<!--<meta charset="windows-1251">-->
+</head>
+<body>
+<p>Meta inside comment.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb-ref.html b/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb-ref.html
new file mode 100644
index 0000000000..12e9b93626
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>noscript</code> after <code>template</code> (which is also inside the <code>noscript</code>) after 1kb of padding following the template.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb.html b/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb.html
new file mode 100644
index 0000000000..d22e83aaa7
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-after-template-after-1kb.html
@@ -0,0 +1,894 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-noscript-after-template-after-1kb-ref.html">
+<noscript><template></template>
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+<meta charset="windows-1251"></noscript>
+</head>
+<body>
+<p>Meta in <code>noscript</code> after <code>template</code> (which is also inside the <code>noscript</code>) after 1kb of padding following the template.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-after-template-ref.html b/parser/htmlparser/tests/reftest/in-noscript-after-template-ref.html
new file mode 100644
index 0000000000..27defe54c0
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-after-template-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>noscript</code> after <code>template</code> (which is also inside the <code>noscript</code>).</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-after-template.html b/parser/htmlparser/tests/reftest/in-noscript-after-template.html
new file mode 100644
index 0000000000..71ef9144e0
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-after-template.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-noscript-after-template-ref.html">
+<noscript><template></template><meta charset="windows-1251"></noscript>
+</head>
+<body>
+<p>Meta in <code>noscript</code> after <code>template</code> (which is also inside the <code>noscript</code>).</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-ncr-ref.html b/parser/htmlparser/tests/reftest/in-noscript-ncr-ref.html
new file mode 100644
index 0000000000..3581ab68db
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-ncr-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta with NCR in the encoding label in <code>noscript</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-ncr.html b/parser/htmlparser/tests/reftest/in-noscript-ncr.html
new file mode 100644
index 0000000000..645f151b26
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-ncr.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-noscript-ncr-ref.html">
+<noscript><meta charset="&#119;indows-1251"></noscript>
+</head>
+<body>
+<p>Meta with NCR in the encoding label in <code>noscript</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript-ref.html b/parser/htmlparser/tests/reftest/in-noscript-ref.html
new file mode 100644
index 0000000000..9bb9f24b88
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>noscript</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-noscript.html b/parser/htmlparser/tests/reftest/in-noscript.html
new file mode 100644
index 0000000000..e76054d618
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-noscript.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-noscript-ref.html">
+<noscript><meta charset="windows-1251"></noscript>
+</head>
+<body>
+<p>Meta in <code>noscript</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-object-ref.html b/parser/htmlparser/tests/reftest/in-object-ref.html
new file mode 100644
index 0000000000..3f52d0efe9
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-object-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>object</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-object.html b/parser/htmlparser/tests/reftest/in-object.html
new file mode 100644
index 0000000000..32535b8eba
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-object.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/in-object-ref.html">
+<object><meta charset="windows-1251"></object>
+</head>
+<body>
+<p>Meta in <code>object</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-script-ref.html b/parser/htmlparser/tests/reftest/in-script-ref.html
new file mode 100644
index 0000000000..bbb63fd931
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-script-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>script</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-script.html b/parser/htmlparser/tests/reftest/in-script.html
new file mode 100644
index 0000000000..0c18a4435e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-script.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-script-ref.html">
+<script><meta charset="windows-1251"></script>
+</head>
+<body>
+<p>Meta in <code>script</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-style-ref.html b/parser/htmlparser/tests/reftest/in-style-ref.html
new file mode 100644
index 0000000000..9669146eb5
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-style-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>style</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-style.html b/parser/htmlparser/tests/reftest/in-style.html
new file mode 100644
index 0000000000..69d8fa429c
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-style.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-style-ref.html">
+<style><meta charset="windows-1251"></style>
+</head>
+<body>
+<p>Meta in <code>style</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt-ref.html b/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt-ref.html
new file mode 100644
index 0000000000..2868f47fc2
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<svg></svg>
+<p>In SVG in CDATA after greater-than sign in the CDATA (after head).</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt.html b/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt.html
new file mode 100644
index 0000000000..56783b7afc
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg-in-cdata-after-gt.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-svg-in-cdata-after-gt-ref.html">
+</head>
+<body>
+<svg><![CDATA[><meta charset="windows-1251">]]></svg>
+<p>In SVG in CDATA after greater-than sign in the CDATA (after head).</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg-in-cdata-ref.html b/parser/htmlparser/tests/reftest/in-svg-in-cdata-ref.html
new file mode 100644
index 0000000000..1d17d2720b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg-in-cdata-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<svg></svg>
+<p>In SVG in CDATA (after head).</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg-in-cdata.html b/parser/htmlparser/tests/reftest/in-svg-in-cdata.html
new file mode 100644
index 0000000000..d1c4ca12b3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg-in-cdata.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-svg-in-cdata-ref.html">
+</head>
+<body>
+<svg><![CDATA[<meta charset="windows-1251">]]></svg>
+<p>In SVG in CDATA (after head).</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg-ref.html b/parser/htmlparser/tests/reftest/in-svg-ref.html
new file mode 100644
index 0000000000..c9e41aa177
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<svg></svg>
+<p>In SVG (after head).</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-svg.html b/parser/htmlparser/tests/reftest/in-svg.html
new file mode 100644
index 0000000000..cb29164289
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-svg.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/in-svg-ref.html">
+</head>
+<body>
+<svg><meta charset="windows-1251"></svg>
+<p>In SVG (after head).</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-template-after-1kb-ref.html b/parser/htmlparser/tests/reftest/in-template-after-1kb-ref.html
new file mode 100644
index 0000000000..df20eba39b
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-template-after-1kb-ref.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<head>
+</head>
+<body>
+<p>In <code>template</code>, before <code>head</code> end tag, after first kilobyte.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-template-after-1kb.html b/parser/htmlparser/tests/reftest/in-template-after-1kb.html
new file mode 100644
index 0000000000..ae77decea2
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-template-after-1kb.html
@@ -0,0 +1,1046 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-template-after-1kb-ref.html">
+
+
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+<template><meta charset="windows-1251"></template>
+</head>
+<body>
+<p>In <code>template</code>, before <code>head</code> end tag, after first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-template-ref.html b/parser/htmlparser/tests/reftest/in-template-ref.html
new file mode 100644
index 0000000000..83c0e93072
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-template-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Meta in <code>template</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-template.html b/parser/htmlparser/tests/reftest/in-template.html
new file mode 100644
index 0000000000..264affc269
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-template.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/in-template-ref.html">
+<template><meta charset="windows-1251"></template>
+</head>
+<body>
+<p>Meta in <code>template</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-title-ref.html b/parser/htmlparser/tests/reftest/in-title-ref.html
new file mode 100644
index 0000000000..5fb8a05f2d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-title-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+<title><meta charset="windows-1251"></title>
+</head>
+<body>
+<p>Meta in <code>title</code>.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/in-title.html b/parser/htmlparser/tests/reftest/in-title.html
new file mode 100644
index 0000000000..7b72c48dd8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/in-title.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/in-title-ref.html">
+<title><meta charset="windows-1251"></title>
+</head>
+<body>
+<p>Meta in <code>title</code>.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/incomplete-xml-decl-ref.html b/parser/htmlparser/tests/reftest/incomplete-xml-decl-ref.html
new file mode 100644
index 0000000000..201fe664d5
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/incomplete-xml-decl-ref.html
@@ -0,0 +1,2 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>incomplete-xml-decl.xml</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="pi">&lt;?xml 
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/incomplete-xml-decl.xml b/parser/htmlparser/tests/reftest/incomplete-xml-decl.xml
new file mode 100644
index 0000000000..1b345b6c84
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/incomplete-xml-decl.xml
@@ -0,0 +1 @@
+<?xml 
diff --git a/parser/htmlparser/tests/reftest/ncr-ref.html b/parser/htmlparser/tests/reftest/ncr-ref.html
new file mode 100644
index 0000000000..1d25b4d23d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/ncr-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>NCR in encoding label.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/ncr.html b/parser/htmlparser/tests/reftest/ncr.html
new file mode 100644
index 0000000000..9f8b7308ad
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/ncr.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/ncr-ref.html">
+<meta charset="&#119;indows-1251">
+</head>
+<body>
+<p>NCR in encoding label.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/non-ascii-in-comment-before-ref.html b/parser/htmlparser/tests/reftest/non-ascii-in-comment-before-ref.html
new file mode 100644
index 0000000000..bd2acd274c
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/non-ascii-in-comment-before-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+</head>
+<body>
+<p>Normal meta. Non-ASCII in comment before.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/non-ascii-in-comment-before.html b/parser/htmlparser/tests/reftest/non-ascii-in-comment-before.html
new file mode 100644
index 0000000000..148c6544a3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/non-ascii-in-comment-before.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/non-ascii-in-comment-before-ref.html">
+<!-- � -->
+<meta charset="windows-1251">
+</head>
+<body>
+<p>Normal meta. Non-ASCII in comment before.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/non-ascii-in-title-before-ref.html b/parser/htmlparser/tests/reftest/non-ascii-in-title-before-ref.html
new file mode 100644
index 0000000000..4f54732432
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/non-ascii-in-title-before-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+<title>ж</title>
+</head>
+<body>
+<p>Normal meta. Non-ASCII in title before.</p>
+<p>Test: ж</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/non-ascii-in-title-before.html b/parser/htmlparser/tests/reftest/non-ascii-in-title-before.html
new file mode 100644
index 0000000000..aac0ca94c1
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/non-ascii-in-title-before.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/non-ascii-in-title-before-ref.html">
+<title>�</title>
+<meta charset="windows-1251">
+</head>
+<body>
+<p>Normal meta. Non-ASCII in title before.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/reftest.list b/parser/htmlparser/tests/reftest/reftest.list
new file mode 100644
index 0000000000..6607a6112c
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/reftest.list
@@ -0,0 +1,73 @@
+== bug535530-1.html bug535530-1-ref.html
+== view-source:bug535530-2.html bug535530-2-ref.html
+== bug566280-1.html bug566280-1-ref.html
+== bug569229-1.xml bug569229-1-ref.xml
+== bug577418-1.html bug577418-1-ref.html
+== bug582788-1.html bug582788-1-ref.html
+fuzzy(0-2,0-5) skip-if(OSX) == bug582940-1.html bug582940-1-ref.html
+== bug592656-1.html bug592656-1-ref.html
+fuzzy(0-1,0-5) == bug599320-1.html bug599320-1-ref.html
+fuzzy(0-2,0-5) == bug608373-1.html bug608373-1-ref.html
+== view-source:bug482921-1.html bug482921-1-ref.html
+== view-source:bug482921-2.xhtml bug482921-2-ref.html
+fuzzy(0-2,0-5) == bug659763-1.html bug659763-1-ref.html
+fuzzy(0-1,0-5) == bug659763-2.html bug659763-2-ref.html
+fuzzy(0-1,0-5) == bug659763-3.html bug659763-3-ref.html
+fuzzy(0-2,0-3) == bug659763-4.html bug659763-4-ref.html
+fuzzy(0-1,0-5) == bug659763-5.html bug659763-5-ref.html
+fuzzy(0-1,0-5) == bug659763-6.html bug659763-6-ref.html
+== view-source:bug673094-1.html view-source:bug673094-1-ref.html
+== bug696651-1.html bug696651-1-ref.html
+== bug696651-2.html bug696651-2-ref.html
+== view-source:bug700260-1.html view-source:bug700260-1-ref.html
+== view-source:bug704667-1.html bug704667-1-ref.html
+== view-source:bug731234-1.html bug731234-1-ref.html
+== bug820508-1.html bug820508-1-ref.html
+== view-source:bug910588-1.html bug910588-1-ref.html
+== bug1636607-1.html bug1636607-1-ref.html
+== bug1636607-2.html bug1636607-2-ref.html
+== view-source:bug1319410-1.html bug1319410-1-ref.html
+== view-source:bug1650087-1.html bug1650087-1-ref.html
+== view-source:bug1726374-1.html bug1726374-1-ref.html
+== view-source:bug1153920-1.html bug1153920-1-ref.html
+== after-1kb.html after-1kb-ref.html
+!= after-bogus-after-1kb.html after-bogus-after-1kb-ref.html
+== after-bogus.html after-bogus-ref.html
+!= after-head-after-1kb-crlf.html after-head-after-1kb-crlf-ref.html
+!= after-head-after-1kb.html after-head-after-1kb-ref.html
+== after-head-in-1kb-crlf.html after-head-in-1kb-crlf-ref.html
+== after-head-in-1kb.html after-head-in-1kb-ref.html
+== baseline.html baseline-ref.html
+!= document-write.html document-write-ref.html
+!= in-comment.html in-comment-ref.html
+!= in-noscript-after-template-after-1kb.html in-noscript-after-template-after-1kb-ref.html
+!= in-noscript-after-template.html in-noscript-after-template-ref.html
+!= in-noscript.html in-noscript-ref.html
+!= in-noscript-ncr.html in-noscript-ncr-ref.html
+== in-object.html in-object-ref.html
+!= in-script.html in-script-ref.html
+!= in-style.html in-style-ref.html
+== in-svg.html in-svg-ref.html
+!= in-svg-in-cdata-after-gt.html in-svg-in-cdata-after-gt-ref.html
+!= in-svg-in-cdata.html in-svg-in-cdata-ref.html
+!= in-template-after-1kb.html in-template-after-1kb-ref.html
+== in-template.html in-template-ref.html
+!= in-title.html in-title-ref.html
+== ncr.html ncr-ref.html
+== non-ascii-in-comment-before.html non-ascii-in-comment-before-ref.html
+== non-ascii-in-title-before.html non-ascii-in-title-before-ref.html
+== view-source:xml-1.xml xml-ref.html
+HTTP(..) == view-source:xml-trickle-1.sjs xml-ref.html
+HTTP(..) == view-source:xml-trickle-2.sjs xml-ref.html
+HTTP(..) == view-source:xml-trickle-3.sjs xml-ref.html
+HTTP(..) == view-source:xml-trickle-4.sjs xml-utf-ref.html
+HTTP(..) == view-source:xml-trickle-5.sjs xml-utf-ref.html
+HTTP(..) == view-source:xml-trickle-6.sjs xml-utf-ref.html
+skip-if(Android) HTTP(..) == view-source:vs-after-head-in-1kb.html vs-after-head-in-1kb-ref.html # Skipped on Android due to inconsistent scrollbar display
+HTTP(..) != view-source:vs-after-head-after-1kb.html vs-after-head-after-1kb-ref.html
+HTTP(..) == view-source:vs-non-ascii-in-comment-before.html vs-non-ascii-in-comment-before-ref.html
+HTTP(..) == view-source:vs-non-ascii-in-comment-before.sjs vs-non-ascii-in-comment-before-ref.html
+== view-source:xml-without-tags.xml xml-without-tags-ref.html
+== view-source:incomplete-xml-decl.xml incomplete-xml-decl-ref.html
+== view-source:view-source-bom.html view-source-bom-ref.html
+skip-if(Android) == bug1749522-1.txt bug1749522-1-ref.txt # Skipped on Android due to suspicion of harness bug
diff --git a/parser/htmlparser/tests/reftest/view-source-bom-ref.html b/parser/htmlparser/tests/reftest/view-source-bom-ref.html
new file mode 100644
index 0000000000..0ed26be850
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/view-source-bom-ref.html
@@ -0,0 +1,10 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>view-source-bom.html</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">html</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">head</span>&gt;</span><span>
+<span id="line4"></span>    </span><span>&lt;<span class="start-tag">title</span>&gt;</span><span>UTF-8 file with a BOM</span><span>&lt;/<span class="end-tag">title</span>&gt;</span><span>
+<span id="line5"></span></span><span>&lt;/<span class="end-tag">head</span>&gt;</span><span>
+<span id="line6"></span></span><span>&lt;<span class="start-tag">body</span>&gt;</span><span>
+<span id="line7"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>UTF-8 file with a BOM. Euro sign: €</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line8"></span></span><span>&lt;/<span class="end-tag">body</span>&gt;</span><span>
+<span id="line9"></span></span><span>&lt;/<span class="end-tag">html</span>&gt;</span><span>
+<span id="line10"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/view-source-bom.html b/parser/htmlparser/tests/reftest/view-source-bom.html
new file mode 100644
index 0000000000..d10d94fbee
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/view-source-bom.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>UTF-8 file with a BOM</title>
+</head>
+<body>
+<p>UTF-8 file with a BOM. Euro sign: €</p>
+</body>
+</html>
diff --git a/parser/htmlparser/tests/reftest/vs-after-head-after-1kb-ref.html b/parser/htmlparser/tests/reftest/vs-after-head-after-1kb-ref.html
new file mode 100644
index 0000000000..5a721755b1
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-after-head-after-1kb-ref.html
@@ -0,0 +1,11 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>vs-after-head-after-1kb.html</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">head</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">link</span> <span class="attribute-name">rel</span>="<a class="attribute-value">mismatch</a>" <span class="attribute-name">href</span>="<a class="attribute-value" href="view-source:references/after-head-after-1kb-ref.html">references/after-head-after-1kb-ref.html</a>"&gt;</span><span>
+<span id="line4"></span>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           </span><span>&lt;/<span class="end-tag">head</span>&gt;</span><span>
+<span id="line5"></span></span><span class="error" title="“meta” element between “head” and “body”.">&lt;<span class="start-tag">meta</span> <span class="attribute-name">charset</span>="<a class="attribute-value">windows-1251</a>"&gt;</span><span>
+<span id="line6"></span></span><span>&lt;<span class="start-tag">body</span>&gt;</span><span>
+<span id="line7"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>After </span><span>&lt;<span class="start-tag">code</span>&gt;</span><span>head</span><span>&lt;/<span class="end-tag">code</span>&gt;</span><span>, before </span><span>&lt;<span class="start-tag">code</span>&gt;</span><span>body</span><span>&lt;/<span class="end-tag">code</span>&gt;</span><span>, after first kilobyte.</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line8"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Test: ж</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line9"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>If <span class="entity"><span>&amp;</span>#x0436;</span>, meta takes effect</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line10"></span></span><span>&lt;/<span class="end-tag">body</span>&gt;</span><span>
+<span id="line11"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/vs-after-head-after-1kb.html b/parser/htmlparser/tests/reftest/vs-after-head-after-1kb.html
new file mode 100644
index 0000000000..6637a2a8c5
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-after-head-after-1kb.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<head>
+<link rel="mismatch" href="references/after-head-after-1kb-ref.html">
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           </head>
+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, after first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/vs-after-head-in-1kb-ref.html b/parser/htmlparser/tests/reftest/vs-after-head-in-1kb-ref.html
new file mode 100644
index 0000000000..706c20da6e
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-after-head-in-1kb-ref.html
@@ -0,0 +1,12 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>vs-after-head-in-1kb.html</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">head</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">link</span> <span class="attribute-name">rel</span>="<a class="attribute-value">match</a>" <span class="attribute-name">href</span>="<a class="attribute-value" href="view-source:references/after-head-in-1kb-ref.html">references/after-head-in-1kb-ref.html</a>"&gt;</span><span>
+<span id="line4"></span></span><span>&lt;/<span class="end-tag">head</span>&gt;</span><span>
+<span id="line5"></span>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
+<span id="line6"></span></span><span class="error" title="“meta” element between “head” and “body”.">&lt;<span class="start-tag">meta</span> <span class="attribute-name">charset</span>="<a class="attribute-value">windows-1251</a>"&gt;</span><span>
+<span id="line7"></span></span><span>&lt;<span class="start-tag">body</span>&gt;</span><span>
+<span id="line8"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>After </span><span>&lt;<span class="start-tag">code</span>&gt;</span><span>head</span><span>&lt;/<span class="end-tag">code</span>&gt;</span><span>, before </span><span>&lt;<span class="start-tag">code</span>&gt;</span><span>body</span><span>&lt;/<span class="end-tag">code</span>&gt;</span><span>, within first kilobyte.</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line9"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Test: ж</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line10"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>If <span class="entity"><span>&amp;</span>#x0436;</span>, meta takes effect</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line11"></span></span><span>&lt;/<span class="end-tag">body</span>&gt;</span><span>
+<span id="line12"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/vs-after-head-in-1kb.html b/parser/htmlparser/tests/reftest/vs-after-head-in-1kb.html
new file mode 100644
index 0000000000..af63f06acb
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-after-head-in-1kb.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/after-head-in-1kb-ref.html">
+</head>
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
+<meta charset="windows-1251">
+<body>
+<p>After <code>head</code>, before <code>body</code>, within first kilobyte.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before-ref.html b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before-ref.html
new file mode 100644
index 0000000000..66f0338658
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before-ref.html
@@ -0,0 +1,12 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>vs-non-ascii-in-comment-before.html</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="doctype">&lt;!DOCTYPE html&gt;</span><span>
+<span id="line2"></span></span><span>&lt;<span class="start-tag">head</span>&gt;</span><span>
+<span id="line3"></span></span><span>&lt;<span class="start-tag">link</span> <span class="attribute-name">rel</span>="<a class="attribute-value">match</a>" <span class="attribute-name">href</span>="<a class="attribute-value" href="view-source:references/non-ascii-in-comment-before-ref.html">references/non-ascii-in-comment-before-ref.html</a>"&gt;</span><span>
+<span id="line4"></span></span><span class="comment">&lt;!-- ж --&gt;</span><span>
+<span id="line5"></span></span><span>&lt;<span class="start-tag">meta</span> <span class="attribute-name">charset</span>="<a class="attribute-value">windows-1251</a>"&gt;</span><span>
+<span id="line6"></span></span><span>&lt;/<span class="end-tag">head</span>&gt;</span><span>
+<span id="line7"></span></span><span>&lt;<span class="start-tag">body</span>&gt;</span><span>
+<span id="line8"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Normal meta. Non-ASCII in comment before.</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line9"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>Test: ж</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line10"></span></span><span>&lt;<span class="start-tag">p</span>&gt;</span><span>If <span class="entity"><span>&amp;</span>#x0436;</span>, meta takes effect</span><span>&lt;/<span class="end-tag">p</span>&gt;</span><span>
+<span id="line11"></span></span><span>&lt;/<span class="end-tag">body</span>&gt;</span><span>
+<span id="line12"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.html b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.html
new file mode 100644
index 0000000000..148c6544a3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<head>
+<link rel="match" href="references/non-ascii-in-comment-before-ref.html">
+<!-- � -->
+<meta charset="windows-1251">
+</head>
+<body>
+<p>Normal meta. Non-ASCII in comment before.</p>
+<p>Test: �</p>
+<p>If &#x0436;, meta takes effect</p>
+</body>
diff --git a/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.sjs b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.sjs
new file mode 100644
index 0000000000..12b1919ff8
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/vs-non-ascii-in-comment-before.sjs
@@ -0,0 +1,16 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "text/html", false);
+  response.write('<!DOCTYPE html>\n<head>\n<link rel="match" href="references/non-ascii-in-comment-before-ref.html">\n<!-- \u00E6 -->\n');
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write('<meta charset="windows-1251">\n</head>\n<body>\n<p>Normal meta. Non-ASCII in comment before.</p>\n<p>Test: \u00E6</p>\n<p>If &#x0436;, meta takes effect</p>\n</body>\n');
+    response.finish();
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
diff --git a/parser/htmlparser/tests/reftest/xml-1.xml b/parser/htmlparser/tests/reftest/xml-1.xml
new file mode 100644
index 0000000000..a6ac350ad3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-1.xml
@@ -0,0 +1 @@
+<?xml version='1.0' encoding='windows-1251'?><root>�</root>
diff --git a/parser/htmlparser/tests/reftest/xml-ref.html b/parser/htmlparser/tests/reftest/xml-ref.html
new file mode 100644
index 0000000000..3bf58fb763
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-ref.html
@@ -0,0 +1,2 @@
+<html><meta charset="utf-8"><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="pi">&lt;?xml version='1.0' encoding='windows-1251'?&gt;</span><span></span><span>&lt;<span class="start-tag">root</span>&gt;</span><span>ж</span><span>&lt;/<span class="end-tag">root</span>&gt;</span><span>
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-1.sjs b/parser/htmlparser/tests/reftest/xml-trickle-1.sjs
new file mode 100644
index 0000000000..eaec0e37fc
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-1.sjs
@@ -0,0 +1,17 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("?xml version='1.0' encoding='windows-1251'?><root>\u00E6</root>\n");
+    response.finish();
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-2.sjs b/parser/htmlparser/tests/reftest/xml-trickle-2.sjs
new file mode 100644
index 0000000000..04c1354fa3
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-2.sjs
@@ -0,0 +1,17 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<?");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("xml version='1.0' encoding='windows-1251'?><root>\u00E6</root>\n");
+    response.finish();
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-3.sjs b/parser/htmlparser/tests/reftest/xml-trickle-3.sjs
new file mode 100644
index 0000000000..e601f69038
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-3.sjs
@@ -0,0 +1,21 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<?");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("xml");
+    response.bodyOutputStream.flush();
+    timer.initWithCallback(function() {
+      response.write(" version='1.0' encoding='windows-1251'?><root>\u00E6</root>\n");
+      response.finish();
+    }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-4.sjs b/parser/htmlparser/tests/reftest/xml-trickle-4.sjs
new file mode 100644
index 0000000000..0ac01d84da
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-4.sjs
@@ -0,0 +1,17 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("?xml version='1.0'?><root>\u00D0\u00B6</root>\n");
+    response.finish();
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-5.sjs b/parser/htmlparser/tests/reftest/xml-trickle-5.sjs
new file mode 100644
index 0000000000..815295ac30
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-5.sjs
@@ -0,0 +1,17 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<?");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("xml version='1.0'?><root>\u00D0\u00B6</root>\n");
+    response.finish();
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-trickle-6.sjs b/parser/htmlparser/tests/reftest/xml-trickle-6.sjs
new file mode 100644
index 0000000000..9e96687d19
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-trickle-6.sjs
@@ -0,0 +1,21 @@
+var timer; // Place timer in global scope to avoid it getting GC'ed prematurely
+
+function handleRequest(request, response)
+{
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/xml", false);
+  response.write("<?");
+  response.bodyOutputStream.flush();
+  response.processAsync();
+  timer = Components.classes["@mozilla.org/timer;1"]
+    .createInstance(Components.interfaces.nsITimer);
+  timer.initWithCallback(function() {
+    response.write("xml");
+    response.bodyOutputStream.flush();
+    timer.initWithCallback(function() {
+      response.write(" version='1.0'?><root>\u00D0\u00B6</root>\n");
+      response.finish();
+    }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+  }, 10, Components.interfaces.nsITimer.TYPE_ONE_SHOT);
+}
+
diff --git a/parser/htmlparser/tests/reftest/xml-utf-ref.html b/parser/htmlparser/tests/reftest/xml-utf-ref.html
new file mode 100644
index 0000000000..98a3100b24
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-utf-ref.html
@@ -0,0 +1,2 @@
+<html><meta charset="utf-8"><head><meta name="viewport" content="width=device-width"><title></title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span></span><span class="pi">&lt;?xml version='1.0'?&gt;</span><span></span><span>&lt;<span class="start-tag">root</span>&gt;</span><span>ж</span><span>&lt;/<span class="end-tag">root</span>&gt;</span><span>
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/xml-without-tags-ref.html b/parser/htmlparser/tests/reftest/xml-without-tags-ref.html
new file mode 100644
index 0000000000..d853e67634
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-without-tags-ref.html
@@ -0,0 +1,2 @@
+<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><title>xml-without-tags.xml</title><link rel="stylesheet" type="text/css" href="resource://content-accessible/viewsource.css"></head><body id="viewsource" class="highlight" style="tab-size: 4"><pre id="line1"><span>ill-formed
+<span id="line2"></span></span></pre></body></html>
diff --git a/parser/htmlparser/tests/reftest/xml-without-tags.xml b/parser/htmlparser/tests/reftest/xml-without-tags.xml
new file mode 100644
index 0000000000..ddc2f2135d
--- /dev/null
+++ b/parser/htmlparser/tests/reftest/xml-without-tags.xml
@@ -0,0 +1 @@
+ill-formed