Added faillig slice test.
Added faillig slice test.

nolanlawson/buffer,LiuDeng/buffer,feross/buffer,SAGV/buffer,beni55/buffer,btd/buffer,btd/buffer,feross/buffer,substack/native-buffer-browserify,beni55/buffer,mafintosh/buffer,mafintosh/buffer,toots/buffer-browserify,loon3/buffer,LinusU/buffer,kawanet/buffer,jessetane/buffer,nolanlawson/buffer,LiuDeng/buffer,LinusU/buffer,feross/buffer,loon3/buffer,kawanet/buffer,SAGV/buffer