test_distutils: test_build_ext uses EnvironGuard (#1458)
Use EnvironGuard on BuildExtTestCase to save/restore os.environ, to fix the
following warning:
Warning -- os.environ was modified by test_distutils
MSVCCompiler.initialize() of distutils.msvc9compiler modifies
os.environ.
diff --git a/Lib/distutils/tests/test_build_ext.py b/Lib/distutils/tests/test_build_ext.py
index a4494db..a6d2d2e 100644
--- a/Lib/distutils/tests/test_build_ext.py
+++ b/Lib/distutils/tests/test_build_ext.py
@@ -20,6 +20,7 @@
class BuildExtTestCase(support.TempdirManager,
support.LoggingSilencer,
+ support.EnvironGuard,
unittest.TestCase):
def setUp(self):
super(BuildExtTestCase, self).setUp()