https://bitbucket.org/ianb/webob/issue/11
https://bitbucket.org/ianb/webob/changeset/145b64e724eb

--- tests/test_misc.py
+++ tests/test_misc.py
@@ -130,7 +130,8 @@
 
 
 def test_multidict_cgi():
-    fs = cgi.FieldStorage()
+    env = {'QUERY_STRING': ''}
+    fs = cgi.FieldStorage(environ=env)
     fs.filename = '\xc3\xb8'
     plain = MultiDict(key='\xc3\xb8', fs=fs)
     ua = UnicodeMultiDict(multi=plain, encoding='utf-8')
--- tests/test_multidict.py
+++ tests/test_multidict.py
@@ -187,7 +187,8 @@
         d = self._get_instance()
         d.decode_keys = True
 
-        fs = cgi.FieldStorage()
+        env = {'QUERY_STRING': ''}
+        fs = cgi.FieldStorage(environ=env)
         fs.name = 'a'
         self.assertEqual(d._decode_value(fs).name, 'a')