[3.8] bpo-37795: Capture DeprecationWarnings in the test suite (GH-15184) (GH-15188)

(cherry picked from commit aa542c2)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Lib/distutils/tests/test_bdist.py

@@ -2,6 +2,7 @@
 import os
 import unittest
 from test.support import run_unittest
+import warnings
 
 from distutils.command.bdist import bdist
 from distutils.tests import support
@@ -38,7 +39,10 @@ class BuildTestCase(support.TempdirManager,
             names.append('bdist_msi')
 
         for name in names:
-            subcmd = cmd.get_finalized_command(name)
+            with warnings.catch_warnings():
+                warnings.filterwarnings('ignore', 'bdist_wininst command is deprecated',
+                                        DeprecationWarning)
+                subcmd = cmd.get_finalized_command(name)
             if getattr(subcmd, '_unsupported', False):
                 # command is not supported on this build
                 continue

Lib/test/test_httplib.py

@@ -7,6 +7,7 @@ import array
 import re
 import socket
 import threading
+import warnings
 
 import unittest
 TestCase = unittest.TestCase
@@ -1759,8 +1760,11 @@ class HTTPSTest(TestCase):
         self.assertIs(h._context, context)
         self.assertFalse(h._context.post_handshake_auth)
 
-        h = client.HTTPSConnection('localhost', 443, context=context,
-                                   cert_file=CERT_localhost)
+        with warnings.catch_warnings():
+            warnings.filterwarnings('ignore', 'key_file, cert_file and check_hostname are deprecated',
+                                    DeprecationWarning)
+            h = client.HTTPSConnection('localhost', 443, context=context,
+                                       cert_file=CERT_localhost)
         self.assertTrue(h._context.post_handshake_auth)