Add device name check in unit test
Add device name check in unit test

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