diff --git a/mozilla/content/xml/tests/xmlbase/xmlbase.xml b/mozilla/content/xml/tests/xmlbase/xmlbase.xml
new file mode 100644
index 00000000000..15acc628dc3
--- /dev/null
+++ b/mozilla/content/xml/tests/xmlbase/xmlbase.xml
@@ -0,0 +1,62 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="xmlbase.css" type="text/css"?>
+<root xmlns:xlink="http://www.w3.org/1999/xlink">
+<title>Root: no xml:base</title>
+<xlink:link xlink:type="simple" xlink:href="a.xml">a.xml</xlink:link>
+<p>Expected: &lt;current path>/a.xml</p>
+<sect1 xml:base="http://www.mozilla.org">
+  <title>Sect1: xml:base="http://www.mozilla.org"</title>
+  <xlink:link xlink:type="simple" xlink:href="b.xml">b.xml</xlink:link>
+  <p>Expected: http://www.mozilla.org/b.xml</p>
+  <sect2 xml:base="/base">
+    <title>Sect2: xml:base="/base"</title>
+    <xlink:link xlink:type="simple" xlink:href="c.xml">c.xml</xlink:link>
+    <p>Expected: http://www.mozilla.org/base/c.xml</p>
+    <sect3 xml:base="">
+      <title>Sect3: xml:base=""</title>
+      <xlink:link xlink:type="simple" xlink:href="d.xml">d.xml</xlink:link>
+      <p>Expected: http://www.mozilla.org/base/d.xml</p>
+    </sect3>
+    <sect3 xml:base="/">
+      <title>Sect3: xml:base="/"</title>
+      <xlink:link xlink:type="simple" xlink:href="d-2.xml">d-2.xml</xlink:link>
+      <p>Expected: http://www.mozilla.org/d-2.xml</p>
+    </sect3>
+    <sect3 xml:base="/foobar">
+      <title>Sect3: xml:base="/foobar"</title>
+      <xlink:link xlink:type="simple" xlink:href="e.xml">e.xml</xlink:link>
+      <p>Expected: http://www.mozilla.org/foobar/e.xml</p>
+    </sect3>
+    <sect3 xml:base="ding/dong">
+      <title>Sect3: xml:base="ding/dong"</title>
+      <xlink:link xlink:type="simple" xlink:href="f.xml">f.xml</xlink:link>
+      <p>Expected: http://www.mozilla.org/base/ding/dong/f.xml</p>
+    </sect3>
+  </sect2>
+  <sect2 xml:base="http://www.netscape.com">
+    <title>Sect2: xml:base="http://www.netscape.com"</title>
+    <xlink:link xlink:type="simple" xlink:href="g.xml">g.xml</xlink:link>
+    <p>Expected: http://www.netscape.com/g.xml</p>
+  </sect2>
+  <sect2 xml:base="http://www.netscape.com">
+    <title>Sect2: xml:base="http://www.netscape.com"</title>
+    <xlink:link xlink:type="simple" xlink:href="http://www.mozilla.org/foobar/h.xml">http://www.mozilla.org/foobar/h.xml</xlink:link>
+    <p>Expected: http://www.mozilla.org/foobar/h.xml</p>
+  </sect2>
+  <sect2 xml:base="http://www.netscape.com">
+    <title>Sect2: xml:base="http://www.netscape.com"</title>
+    <xlink:link xlink:type="simple" xlink:href="i.xml" xml:base="wow">i.xml, this element has xml:base="wow"</xlink:link>
+    <p>Expected: http://www.netscape.com/wow/i.xml</p>
+  </sect2>
+</sect1>
+<sect1 xml:base="nothere">
+  <title>Sect1: xml:base="nothere"</title>
+  <xlink:link xlink:type="simple" xlink:href="j.xml">j.xml</xlink:link>
+  <p>Expected: &lt;current path>/nothere/j.xml</p>
+</sect1>
+<sect1 xml:base="/not">
+  <title>Sect1: xml:base="/not"</title>
+  <xlink:link xlink:type="simple" xlink:href="k.xml">k.xml</xlink:link>
+  <p>Expected: file:///not/k.xml</p>
+</sect1>
+</root>
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