code: def _assert_sparse_tensor_empty(self, sp):
      self.assertEqual(0, sp.indices.size)
      self.assertEqual(0, sp.values.size)
      # TODO(zakaria): check if we can ignore the first dim of the shape.
      self.assertEqual(0, sp.dense_shape[1])
  
imports: import numpy
  from tensorflow.python.client import session
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gen_sparse_ops
  from tensorflow.python.ops import sparse_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 19 for calling the SparseCrossOpTest obj's underlying member method code with example usage: obj._assert_sparse_tensor_empty(sp) without return types