test__socket_dns.py: add TestIPv6 and TestBadPort

--HG--
extra : transplant_source : %F7I%C0%01SF%98%8A%83%7F%B7U%BEW%A5%5DY%AF%DE%D2

greentest/test__socket_dns.py

@@ -220,5 +220,20 @@ class TestInterrupted(greentest.GenericWaitTestCase):
                     pass
 
 
+class TestIPv6(TestCase):
+
+    def test(self):
+        #self.PORTS = ['http']
+        #self.getaddrinfo_args = [(), (AF_UNSPEC, ), (AF_INET, ), (AF_INET6, )]
+        self._test('aaaa.test-ipv6.com')
+
+
+class TestBadPort(TestCase):
+
+    def test(self):
+        self.PORTS = ['xxxxxx']
+        self._test('www.google.com')
+
+
 if __name__ == '__main__':
     greentest.main()