[3.7] bpo-34347: Fix test_utf8_mode.test_cmd_line for AIX (GH-8923) (GH-14233)

Author: aixtools

Lib/test/test_utf8_mode.py

@@ -228,6 +228,8 @@ def check(utf8_opt, expected, **kw):
 
         if sys.platform == 'darwin' or support.is_android:
             c_arg = arg_utf8
+        elif sys.platform.startswith("aix"):
+            c_arg = arg.decode('iso-8859-1')
         else:
             c_arg = arg_ascii
         for loc in POSIX_LOCALES:

Misc/NEWS.d/next/Tests/2018-08-25-13-28-18.bpo-34347.IsRDPB.rst

@@ -0,0 +1 @@
+Fix ``test_utf8_mode.test_cmd_line`` for AIX.  Patch by M. Felt