Use pytest.raises instead of xfail
Use pytest.raises instead of xfail

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