[Checkins] [zopefoundation/Zope] bf8b86: add test for `tal:switch` - to verify #862

[Dieter Maurer]

  Branch: refs/heads/test_tal_switch_#862
  Home:   https://github.com/zopefoundation/Zope
  Commit: bf8b86dae4b2dc90d5720d8159f14022e767700d
      https://github.com/zopefoundation/Zope/commit/bf8b86dae4b2dc90d5720d8159f14022e767700d
  Author: dieter <dieter at handshake.de>
  Date:   2020-07-06 (Mon, 06 Jul 2020)

  Changed paths:
    M CHANGES.rst
    A src/Products/PageTemplates/tests/input/switch.html
    A src/Products/PageTemplates/tests/output/switch.html
    M src/Products/PageTemplates/tests/testHTMLTests.py

  Log Message:
  -----------
  add test for `tal:switch` - to verify #862