Fix unittest for random.rand
Fix unittest for random.rand

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