[Checkins] [zopefoundation/ZODB] 9af7c7: Fix test compatibility with persistent 4.6; test C...

[Jason Madden]

  Branch: refs/heads/pure-python-tests
  Home:   https://github.com/zopefoundation/ZODB
  Commit: 9af7c7f3e0e17bde1a9e3e70427961711e494136
      https://github.com/zopefoundation/ZODB/commit/9af7c7f3e0e17bde1a9e3e70427961711e494136
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-05 (Thu, 05 Mar 2020)

  Changed paths:
    M .travis.yml
    M src/ZODB/tests/testCache.py
    M src/ZODB/tests/testConnectionSavepoint.py
    M src/ZODB/tests/testThreadedShutdown.py
    M tox.ini

  Log Message:
  -----------
  Fix test compatibility with persistent 4.6; test CPython with PURE_PYTHON.