code: def testConcatShape(self):
      # Test case for GitHub 21964.
      x = sparse_tensor.SparseTensor(
          indices=[[0, 0], [1, 1]], values=[1, 2], dense_shape=[2, 2]
      )
      y = sparse_tensor.SparseTensor(
          indices=[[0, 0], [1, 1]], values=[1, 2], dense_shape=[2, 2]
      )
      z = sparse_ops.sparse_concat(-1, [x, y])
      self.assertEqual(z.get_shape().as_list(), [2, 4])
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  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 sparse_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 24 for calling the SparseConcatTest obj's underlying member method code with example usage: obj.testConcatShape() without return types