[Checkins] [zopefoundation/AccessControl] a6ffa9: Add test

[viktordick]

  Branch: refs/heads/83-allow-bytes-as-simple-object-policies
  Home:   https://github.com/zopefoundation/AccessControl
  Commit: a6ffa99bd3fcfd33e7e5c799bc16c5afd6e9f35a
      https://github.com/zopefoundation/AccessControl/commit/a6ffa99bd3fcfd33e7e5c799bc16c5afd6e9f35a
  Author: Viktor Dick <viktor.dick at perfact.de>
  Date:   2019-04-23 (Tue, 23 Apr 2019)

  Changed paths:
    M src/AccessControl/tests/testZopeGuards.py

  Log Message:
  -----------
  Add test