From: Victor Stinner <victor.stinner@gmail.com>
Date: Sun, 11 Oct 2015 08:04:26 +0000 (+0200)
Subject: test_regrtest: catch stderr in test_nowindows()
X-Git-Tag: v3.6.0a1~1263
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=14b4662e18189132e343781070290bf5729452b5;p=thirdparty%2FPython%2Fcpython.git

test_regrtest: catch stderr in test_nowindows()

Check also that the deprecation warning is emited.
---

diff --git a/Lib/test/test_regrtest.py b/Lib/test/test_regrtest.py
index 0f0069836bab..16a29b1c9a05 100644
--- a/Lib/test/test_regrtest.py
+++ b/Lib/test/test_regrtest.py
@@ -5,6 +5,7 @@ Note: test_regrtest cannot be run twice in parallel.
 """
 
 import argparse
+import contextlib
 import faulthandler
 import getopt
 import io
@@ -247,8 +248,11 @@ class ParseArgsTestCase(unittest.TestCase):
     def test_nowindows(self):
         for opt in '-n', '--nowindows':
             with self.subTest(opt=opt):
-                ns = libregrtest._parse_args([opt])
+                with contextlib.redirect_stderr(io.StringIO()) as stderr:
+                    ns = libregrtest._parse_args([opt])
                 self.assertTrue(ns.nowindows)
+                err = stderr.getvalue()
+                self.assertIn('the --nowindows (-n) option is deprecated', err)
 
     def test_forever(self):
         for opt in '-F', '--forever':