Added unit test for #740
Added unit test for #740

liuslevis/DTCoreText,jingchunYuan/DTCoreText,w2592583/DTCoreText,rain1988/DTCoreText,Cocoanetics/DTCoreText,sujeking/DTCoreText,pivotaltracker/DTCoreText,gnr/DTCoreText,devontech/DTCoreText,youprofit/DTCoreText,programming086/DTCoreText,jingchunYuan/DTCoreText,Cocoanetics/DTCoreText,thusfresh/DTCoreText,qskycolor/DTCoreText,appunite/DTCoreText,rain1988/DTCoreText,i-miss-you/DTCoreText,iwakevin/DTCoreText,shuoshi/DTCoreText,cnbin/DTCoreText,i-miss-you/DTCoreText,Cocoanetics/DTCoreText,appunite/DTCoreText,liulinjian/DTCoreText,AmberWhiteSky/DTCoreText,davbeck/DTCoreText,sujeking/DTCoreText,yaoxiaoyong/DTCoreText,devontech/DTCoreText,gank0326/CoreTextWithHTML,qskycolor/DTCoreText,iwakevin/DTCoreText,Akylas/DTCoreText,SanjoDeundiak/DTCoreText,rgregg/DTCoreText,AmberWhiteSky/DTCoreText,Esdeath/DTCoreText,rgregg/DTCoreText,wangmb/DTCoreText,goodheart/DTCoreText,thusfresh/DTCoreText,z8927623/DTCoreText,CoderJWYang/DTCoreText,xiaoyanit/DTCoreText,niklassaers/DTCoreText,canyu9512/DTCoreText,shuoshi/DTCoreText,openresearch/DTCoreText,wangmb/DTCoreText,gank0326/CoreTextWithHTML,goodheart/DTCoreText,1yvT0s/DTCoreText,liulinjian/DTCoreText,davbeck/DTCoreText,cnbin/DTCoreText,Akylas/DTCoreText,1yvT0s/DTCoreText,niklassaers/DTCoreText,z8927623/DTCoreText,canyu9512/DTCoreText,SanjoDeundiak/DTCoreText