refactor errors_spec
refactor errors_spec

sinisterstuf/webmock,hobodave/webmock,hilben/webmock,xuwupeng2000/webmock,davidbegin/webmock,ixti/webmock,maruware/webmock,avantcredit/webmock,bblimke/webmock,spjsschl/webmock,Omnihuron/webmock,VincentZhao/webmock,arronmabrey/webmock,henrik/webmock,taiki45/webmock