fix cookie tests

'cookies' is a CookieJar, not a dict,
and removing the call to '.keys()' doesn't have the same effect

test/test_cookies.py

@@ -86,7 +86,7 @@ class TestCookiedict(unittest.TestCase):
     def test_dict(self):
         cookies = extractor.find("test:").session.cookies
         self.assertEqual(len(cookies), len(self.cdict))
-        self.assertEqual(sorted(cookies), sorted(self.cdict))
+        self.assertEqual(sorted(cookies.keys()), sorted(self.cdict.keys()))
         self.assertEqual(sorted(cookies.values()), sorted(self.cdict.values()))
 
     def test_domain(self):