1 files changed, 12 insertions, 1 deletions
diff --git a/tests/test_tostring.py b/tests/test_tostring.py
index 3e9df524..5235d53e 100644
--- a/tests/test_tostring.py
+++ b/tests/test_tostring.py
@@ -1,6 +1,6 @@
 from sleekxmpp.test import *
 from sleekxmpp.stanza import Message
-from sleekxmpp.xmlstream.stanzabase import ET
+from sleekxmpp.xmlstream.stanzabase import ET, ElementBase
 from sleekxmpp.xmlstream.tostring import tostring, xml_escape
 
 
@@ -110,5 +110,16 @@ class TestToString(SleekTest):
         self.failUnless(result == expected,
              "Stanza Unicode handling is incorrect: %s" % result)
 
+    def testXMLLang(self):
+        """Test that serializing xml:lang works."""
+
+        msg = self.Message()
+        msg._set_attr('{%s}lang' % msg.xml_ns, "no")
+
+        expected = '<message xml:lang="no" />'
+        result = msg.__str__()
+        self.failUnless(expected == result,
+            "Serialization with xml:lang failed: %s" % result)
+
 
 suite = unittest.TestLoader().loadTestsFromTestCase(TestToString)