Issue #3924: Ignore cookies with invalid "version" field in cookielib.
diff --git a/Lib/test/test_cookielib.py b/Lib/test/test_cookielib.py
index b75511c..f57e0c7 100644
--- a/Lib/test/test_cookielib.py
+++ b/Lib/test/test_cookielib.py
@@ -99,7 +99,8 @@
 
 
 class HeaderTests(TestCase):
-    def test_parse_ns_headers(self):
+
+    def test_parse_ns_headers_expires(self):
         from cookielib import parse_ns_headers
 
         # quotes should be stripped
@@ -110,6 +111,17 @@
             ]:
             self.assertEquals(parse_ns_headers([hdr]), expected)
 
+    def test_parse_ns_headers_version(self):
+        from cookielib import parse_ns_headers
+
+        # quotes should be stripped
+        expected = [[('foo', 'bar'), ('version', '1')]]
+        for hdr in [
+            'foo=bar; version="1"',
+            'foo=bar; Version="1"',
+            ]:
+            self.assertEquals(parse_ns_headers([hdr]), expected)
+
     def test_parse_ns_headers_special_names(self):
         # names such as 'expires' are not special in first name=value pair
         # of Set-Cookie: header
@@ -1091,6 +1103,8 @@
             ["Set-Cookie2: a=foo; path=/; Version=1; domain"],
             # bad max-age
             ["Set-Cookie: b=foo; max-age=oops"],
+            # bad version
+            ["Set-Cookie: b=foo; version=spam"],
             ]:
             c = cookiejar_from_cookie_headers(headers)
             # these bad cookies shouldn't be set