code: def testInferNum(self):
      for shape in (2,), (3,), (2, 3), (3, 2), (4, 3, 2):
          x = array_ops.ones(shape, dtype=np.float32)
          cs = array_ops_stack.unstack(x)
          self.assertEqual(type(cs), list)
          self.assertEqual(len(cs), shape[0])
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import gradient_checker_v2
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the UnstackOpTest obj's underlying member method code with example usage: obj.testInferNum() without return types