Add tests for Commit#status and Commit#status_for, feedback:
Add tests for Commit#status and Commit#status_for, feedback:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7034#note_17543036

LUMC/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,daiyu/gitlab-zh,htve/GitlabForChinese,htve/GitlabForChinese,daiyu/gitlab-zh,dplarson/gitlabhq,LUMC/gitlabhq,jirutka/gitlabhq,daiyu/gitlab-zh,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,darkrasid/gitlabhq,dplarson/gitlabhq,htve/GitlabForChinese,daiyu/gitlab-zh,t-zuehlsdorff/gitlabhq,openwide-java/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,darkrasid/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,darkrasid/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,openwide-java/gitlabhq,openwide-java/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,LUMC/gitlabhq,dplarson/gitlabhq,LUMC/gitlabhq,openwide-java/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab