add tests with new decorator
add tests with new decorator

niboshi/chainer,okuta/chainer,chainer/chainer,ktnyt/chainer,hvy/chainer,keisuke-umezawa/chainer,chainer/chainer,keisuke-umezawa/chainer,ktnyt/chainer,cupy/cupy,jnishi/chainer,cupy/cupy,pfnet/chainer,hvy/chainer,kiyukuta/chainer,delta2323/chainer,tkerola/chainer,kashif/chainer,wkentaro/chainer,ronekko/chainer,keisuke-umezawa/chainer,wkentaro/chainer,chainer/chainer,keisuke-umezawa/chainer,okuta/chainer,jnishi/chainer,niboshi/chainer,hvy/chainer,jnishi/chainer,okuta/chainer,chainer/chainer,jnishi/chainer,aonotas/chainer,anaruse/chainer,cupy/cupy,niboshi/chainer,niboshi/chainer,okuta/chainer,ktnyt/chainer,wkentaro/chainer,ktnyt/chainer,hvy/chainer,wkentaro/chainer,cupy/cupy,ysekky/chainer,rezoo/chainer