Add unit test for @checkselector0
Add unit test for @checkselector0

liuruxian/libextobjc,jiakai-lian/libextobjc,WPDreamMelody/libextobjc,sanojnambiar/libextobjc,goodheart/libextobjc,sunfei/libextobjc,sandyway/libextobjc,KBvsMJ/libextobjc,bboyesc/libextobjc,telly/libextobjc