Refactor tests
Refactor tests

jnishi/chainer,hvy/chainer,wkentaro/chainer,wkentaro/chainer,keisuke-umezawa/chainer,chainer/chainer,wkentaro/chainer,okuta/chainer,niboshi/chainer,pfnet/chainer,ktnyt/chainer,niboshi/chainer,hvy/chainer,chainer/chainer,ktnyt/chainer,hvy/chainer,hvy/chainer,keisuke-umezawa/chainer,okuta/chainer,wkentaro/chainer,jnishi/chainer,chainer/chainer,jnishi/chainer,okuta/chainer,tkerola/chainer,ktnyt/chainer,keisuke-umezawa/chainer,jnishi/chainer,niboshi/chainer,keisuke-umezawa/chainer,chainer/chainer,ktnyt/chainer,niboshi/chainer,okuta/chainer