Better tests for MergeRequestDiff#compare_with method
Better tests for MergeRequestDiff#compare_with method

Signed-off-by: Dmitriy Zaporozhets <be23d75b156792e5acab51b196a2deb155d35d6a@gmail.com>

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