--- Python-3.7.4/Lib/test/test_imaplib.py~	2019-07-08 20:03:50.000000000 +0200
+++ Python-3.7.4/Lib/test/test_imaplib.py	2019-08-05 19:25:53.119629647 +0200
@@ -73,7 +73,7 @@ class TestImaplib(unittest.TestCase):
 
     def test_imap4_host_default_value(self):
         # Check whether the IMAP4_PORT is truly unavailable.
-        with socket.socket() as s:
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
             try:
                 s.connect(('', imaplib.IMAP4_PORT))
                 self.skipTest(
@@ -84,7 +84,7 @@ class TestImaplib(unittest.TestCase):
         # This is the exception that should be raised.
         expected_errnos = support.get_socket_conn_refused_errs()
         with self.assertRaises(OSError) as cm:
-            imaplib.IMAP4()
+            imaplib.IMAP4('0.0.0.0')
         self.assertIn(cm.exception.errno, expected_errnos)