Add unittest for RandomState and relevant functions
Add unittest for RandomState and relevant functions

minhpqn/chainer,niboshi/chainer,niboshi/chainer,ktnyt/chainer,cupy/cupy,sinhrks/chainer,okuta/chainer,pfnet/chainer,hvy/chainer,kiyukuta/chainer,cupy/cupy,sinhrks/chainer,cupy/cupy,wkentaro/chainer,okuta/chainer,chainer/chainer,anaruse/chainer,chainer/chainer,cemoody/chainer,ktnyt/chainer,tscohen/chainer,wkentaro/chainer,kikusu/chainer,muupan/chainer,jnishi/chainer,laysakura/chainer,hvy/chainer,muupan/chainer,delta2323/chainer,keisuke-umezawa/chainer,okuta/chainer,wkentaro/chainer,t-abe/chainer,chainer/chainer,benob/chainer,truongdq/chainer,ysekky/chainer,ktnyt/chainer,kashif/chainer,niboshi/chainer,niboshi/chainer,kikusu/chainer,tkerola/chainer,truongdq/chainer,aonotas/chainer,keisuke-umezawa/chainer,AlpacaDB/chainer,ronekko/chainer,hvy/chainer,keisuke-umezawa/chainer,1986ks/chainer,jnishi/chainer,chainer/chainer,jnishi/chainer,AlpacaDB/chainer,okuta/chainer,wkentaro/chainer,cupy/cupy,keisuke-umezawa/chainer,rezoo/chainer,jnishi/chainer,hvy/chainer,benob/chainer,ktnyt/chainer,t-abe/chainer