From: Antoine Pitrou <solipsis@pitrou.net>
Date: Fri, 29 Jun 2012 17:40:35 +0000 (+0200)
Subject: Better diagnose test failure
X-Git-Tag: v3.3.0b2~365^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b8b6a68baa8860d1357d63fcb2cc3428dfaf147f;p=python

Better diagnose test failure
---

diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 00f73a7f02..17be84b001 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -768,10 +768,10 @@ class ThreadingExceptionTests(BaseTestCase):
             """
         expected_output = "end of main thread\n"
         p = subprocess.Popen([sys.executable, "-c", script],
-                             stdout=subprocess.PIPE)
+                             stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         stdout, stderr = p.communicate()
         data = stdout.decode().replace('\r', '')
-        self.assertEqual(p.returncode, 0, "Unexpected error")
+        self.assertEqual(p.returncode, 0, "Unexpected error: " + stderr.decode())
         self.assertEqual(data, expected_output)
 
 class LockTests(lock_tests.LockTests):