pull requests: prevent adding DEFAULT user as reviewer Add a helper method to resolve reviewers, with an added check to prevent the adding of the DEFAULT user as reviewer. The __add_reviewers method, although internal, had a troubling interface where the method was responsible for resolving reviewers, but the caller was responsible for resolving mention_recipients. The method is changed to always take two sets of database User objects, leaving the resolution to the caller in both cases.

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    pytest: pytest
commands =
    pytest: py.test {posargs}