Add test case for Emoji.
Add test case for Emoji.

alexfeng/LTMorphingLabel,dlutweibo/LTMorphingLabel,ws1227/LTMorphingLabel,callmewhy/LTMorphingLabel,nanthi1990/LTMorphingLabel,alexfeng/LTMorphingLabel,sunzeboy/LTMorphingLabel,cnbin/LTMorphingLabel,beeth0ven/LTMorphingLabel,13983441921/LTMorphingLabel,hanhailong/LTMorphingLabel,hejunbinlan/LTMorphingLabel,chengkaizone/LTMorphingLabel,ShyHornet/LTMorphingLabel,eeschimosu/LTMorphingLabel,machelix/LTMorphingLabel,hejunbinlan/LTMorphingLabel,chengkaizone/LTMorphingLabel,lexrus/LTMorphingLabel,13983441921/LTMorphingLabel,cnbin/LTMorphingLabel,ShyHornet/LTMorphingLabel,sunzeboy/LTMorphingLabel,machelix/LTMorphingLabel,ysfox/LTMorphingLabel,hanhailong/LTMorphingLabel,iosyoujian/LTMorphingLabel,liuzechen/LTMorphingLabel,ws1227/LTMorphingLabel,beeth0ven/LTMorphingLabel,shnuzxw/LTMorphingLabel,bestwpw/LTMorphingLabel,13983441921/LTMorphingLabel,eeschimosu/LTMorphingLabel,nanthi1990/LTMorphingLabel,ws1227/LTMorphingLabel,sunzeboy/LTMorphingLabel,machelix/LTMorphingLabel,csjlengxiang/LTMorphingLabel,beeth0ven/LTMorphingLabel,chengkaizone/LTMorphingLabel,csjlengxiang/LTMorphingLabel,ysfox/LTMorphingLabel,cnbin/LTMorphingLabel,callmewhy/LTMorphingLabel,nanthi1990/LTMorphingLabel,iosyoujian/LTMorphingLabel,callmewhy/LTMorphingLabel,shnuzxw/LTMorphingLabel,hanhailong/LTMorphingLabel,csjlengxiang/LTMorphingLabel,iosyoujian/LTMorphingLabel,ShyHornet/LTMorphingLabel,liuzechen/LTMorphingLabel,dlutweibo/LTMorphingLabel,liuzechen/LTMorphingLabel,dlutweibo/LTMorphingLabel,bestwpw/LTMorphingLabel,eeschimosu/LTMorphingLabel,shnuzxw/LTMorphingLabel,alexfeng/LTMorphingLabel,lexrus/LTMorphingLabel