[Checkins] [zopefoundation/Zope] a1a403: Prove that code also works with a one element tuple

[Alessandro Pisa]

  Branch: refs/heads/829-fix-debugError-take-2
  Home:   https://github.com/zopefoundation/Zope
  Commit: a1a403f2f7350d4ab5a196aa4ee175d7ceda8be9
      https://github.com/zopefoundation/Zope/commit/a1a403f2f7350d4ab5a196aa4ee175d7ceda8be9
  Author: ale-rt <alessandro.pisa at gmail.com>
  Date:   2020-05-16 (Sat, 16 May 2020)

  Changed paths:
    M src/ZPublisher/tests/testHTTPResponse.py

  Log Message:
  -----------
  Prove that code also works with a one element tuple