spotify/luigi — pull request #387 by yonromai (2014-07-24 12:58:45+00:00)
Title: add init_* handling to LocalJobRunner

For testing/mocking purposes, enable `LocalJobRunner` to call `init_mapper` and `init_reducer` if defined.

Remark: This change could break existing tests if those methods were defined and calling external resources (esp. extra_files). Not sure this scenario is super realistic for classes already under test, though.