fago/rules — pull request #69 by paranojik (2014-06-24 05:46:16+00:00)
Title: 2281081 - Port "Data value is empty (data_is_empty)" condition to 8.x

This is basically a copy of https://github.com/fago/rules/pull/66 with added unit test.
Related d.g.o. issue: https://www.drupal.org/node/2281081.