def test_unroll_special(self):
        self.validate((6, 2, 3, 3), (3, 2, 2, 2), 'valid', unroll_batch=1)
(unroll_kern, unroll_batch) in (0,1),(1,0) is special case.
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/tensor/nnet/tests/test_conv.py/TestConv2D.test_unroll_special