1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 7db3f7d..daa8afe 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -325,6 +325,17 @@ class BaseThreadedNetworkedTests(unittest.TestCase):
             self.assertEqual(ret, "OK")
 
 
+    def test_linetoolong(self):
+        class TooLongHandler(SimpleIMAPHandler):
+            def handle(self):
+                # Send a very long response line
+                self.wfile.write(b'* OK ' + imaplib._MAXLINE*b'x' + b'\r\n')
+
+        with self.reaped_server(TooLongHandler) as server:
+            self.assertRaises(imaplib.IMAP4.error,
+                              self.imap_class, *server.server_address)
+
+
 class ThreadedNetworkedTests(BaseThreadedNetworkedTests):
 
     server_class = socketserver.TCPServer