Issue #27048: Prevents distutils failing on Windows when environment variables contain non-ASCII characters

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/test_msvccompiler.py b/tests/test_msvccompiler.py
index c4d911ff..4dc24886 100644
--- a/tests/test_msvccompiler.py
+++ b/tests/test_msvccompiler.py
@@ -83,6 +83,24 @@ class msvccompilerTestCase(support.TempdirManager,
         self.assertFalse(os.path.isfile(os.path.join(
             tempdir, os.path.basename(dll))))
 
+    def test_get_vc_env_unicode(self):
+        import distutils._msvccompiler as _msvccompiler
+
+        test_var = 'ṰḖṤṪ┅ṼẨṜ'
+        test_value = '₃⁴₅'
+
+        # Ensure we don't early exit from _get_vc_env
+        old_distutils_use_sdk = os.environ.pop('DISTUTILS_USE_SDK', None)
+        os.environ[test_var] = test_value
+        try:
+            env = _msvccompiler._get_vc_env('x86')
+            self.assertIn(test_var.lower(), env)
+            self.assertEqual(test_value, env[test_var.lower()])
+        finally:
+            os.environ.pop(test_var)
+            if old_distutils_use_sdk:
+                os.environ['DISTUTILS_USE_SDK'] = old_distutils_use_sdk
+
 def test_suite():
     return unittest.makeSuite(msvccompilerTestCase)