[Checkins] [zopefoundation/Products.ZCatalog] 566226: not operator should process empty lists

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: 5662260c816a37b3435b2997ebe98871d62a1042
      https://github.com/zopefoundation/Products.ZCatalog/commit/5662260c816a37b3435b2997ebe98871d62a1042
  Author: Andreas Gabriel <gabriel at hrz.uni-marburg.de>
  Date:   2018-03-21 (Wed, 21 Mar 2018)

  Changed paths:
    M src/Products/PluginIndexes/DateIndex/tests.py
    M src/Products/PluginIndexes/FieldIndex/tests.py
    M src/Products/PluginIndexes/KeywordIndex/tests.py
    M src/Products/PluginIndexes/unindex.py

  Log Message:
  -----------
  not operator should process empty lists