From 18e95b4176256f100429a806d0455406df98f984 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Thu, 14 Sep 2017 08:43:04 -0700
Subject: bpo-31234: Join threads in tests (#3572)

Call thread.join() on threads to prevent the "dangling threads"
warning.
---
 Lib/test/test_smtplib.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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

diff --git a/Lib/test/test_smtplib.py b/Lib/test/test_smtplib.py
index 4c9b7d367c..040ad4e059 100644
--- a/Lib/test/test_smtplib.py
+++ b/Lib/test/test_smtplib.py
@@ -611,7 +611,9 @@ class TooLongLineTests(unittest.TestCase):
         self.sock.settimeout(15)
         self.port = support.bind_port(self.sock)
         servargs = (self.evt, self.respdata, self.sock)
-        threading.Thread(target=server, args=servargs).start()
+        thread = threading.Thread(target=server, args=servargs)
+        thread.start()
+        self.addCleanup(thread.join)
         self.evt.wait()
         self.evt.clear()
 
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