Add tests for missing __init__ detection
Add tests for missing __init__ detection

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