tree d5d8db35e94011861d39ccb0cb453b185b1e4c62
parent 2062686b8241349cf8b1192f850c18270cf0e6ab
author Jesse Keating <omgjlk@us.ibm.com> 1499381136 -0700
committer Jesse Keating <omgjlk@us.ibm.com> 1499381136 -0700

Handle GitHub comment reviews carefully

A comment review should not mask a previously provided approval or
changes_requested review from a given user. The GitHub UX follows the
same logic. If an approval or a changes_requested review was already
provided from a user, that user can issue future comment reviews and it
will not change their vote. Our algorithm needed to be updated to handle
this scenario, and a test case was added to validate it.

Change-Id: Iac10544a1f24362c27220a44edbdb988b7caa989