From 8a3d2af997e3702eac4c5b012537be39ada36888 Mon Sep 17 00:00:00 2001
From: Sanyam Khurana <8039608+CuriousLearner@users.noreply.github.com>
Date: Tue, 2 Jun 2020 06:47:45 +0530
Subject: bpo-26543: Fix IMAP4.noop when debug mode is enabled (GH-15206)

---
 Lib/test/test_imaplib.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'Lib/test/test_imaplib.py')

diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 0fcc1fb99a..f93efba794 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -933,6 +933,20 @@ class ThreadedNetworkedTests(unittest.TestCase):
                 self.assertIsNone(server.logged)
             self.assertIsNone(server.logged)
 
+    @threading_helper.reap_threads
+    @cpython_only
+    def test_dump_ur(self):
+        # See: http://bugs.python.org/issue26543
+        untagged_resp_dict = {'READ-WRITE': [b'']}
+
+        with self.reaped_server(SimpleIMAPHandler) as server:
+            with self.imap_class(*server.server_address) as imap:
+                with mock.patch.object(imap, '_mesg') as mock_mesg:
+                    imap._dump_ur(untagged_resp_dict)
+                    mock_mesg.assert_called_with(
+                        "untagged responses dump:READ-WRITE: [b'']"
+                    )
+
 
 @unittest.skipUnless(ssl, "SSL not available")
 class ThreadedNetworkedTestsSSL(ThreadedNetworkedTests):
-- 
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