Issue #13374: Deprecate os.getcwdb() on Windows
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index a3b99a3..b9e2f32 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -1638,6 +1638,7 @@
                 (os.access, filename, os.R_OK),
                 (os.chdir, filename),
                 (os.chmod, filename, 0o777),
+                (os.getcwdb,),
                 (os.link, filename, filename),
                 (os.listdir, filename),
                 (os.lstat, filename),