Simplify test code
Simplify test code

ktnyt/chainer,keisuke-umezawa/chainer,muupan/chainer,t-abe/chainer,wkentaro/chainer,tkerola/chainer,AlpacaDB/chainer,kiyukuta/chainer,niboshi/chainer,aonotas/chainer,okuta/chainer,chainer/chainer,truongdq/chainer,jnishi/chainer,okuta/chainer,wkentaro/chainer,cupy/cupy,ktnyt/chainer,cupy/cupy,wkentaro/chainer,hvy/chainer,niboshi/chainer,ysekky/chainer,jnishi/chainer,t-abe/chainer,kikusu/chainer,truongdq/chainer,muupan/chainer,anaruse/chainer,wkentaro/chainer,benob/chainer,ronekko/chainer,keisuke-umezawa/chainer,jnishi/chainer,niboshi/chainer,niboshi/chainer,kikusu/chainer,ktnyt/chainer,rezoo/chainer,hvy/chainer,cupy/cupy,keisuke-umezawa/chainer,kashif/chainer,keisuke-umezawa/chainer,sinhrks/chainer,cemoody/chainer,jnishi/chainer,ktnyt/chainer,benob/chainer,chainer/chainer,hvy/chainer,delta2323/chainer,cupy/cupy,chainer/chainer,hvy/chainer,AlpacaDB/chainer,sinhrks/chainer,okuta/chainer,chainer/chainer,okuta/chainer,pfnet/chainer