diff -r ae898a084da2 -r 7b26fe71404f devtools/test/unittest_testlib.py
--- a/devtools/test/unittest_testlib.py	Fri Apr 26 11:53:47 2013 +0200
+++ b/devtools/test/unittest_testlib.py	Fri Apr 26 12:10:37 2013 +0200
@@ -97,7 +97,9 @@
 class HTMLPageInfoTC(TestCase):
     """test cases for PageInfo"""
     def setUp(self):
-        parser = htmlparser.DTDValidator()
+        parser = htmlparser.HTMLValidator()
+        # disable cleanup that would remove doctype
+        parser.preprocess_data = lambda data: data
         self.page_info = parser.parse_string(HTML_PAGE2)
 
     def test_source1(self):