class_docstr: Test the construction of composite ops.
class_docstr_tok: ["Test","the","construction","of","composite","ops","."]
docstr: Test that the batch size is none if no operands have batching.
docstr_tok: ["Test","that","the","batch","size","is","none","if","no","operands","have","batching","."]
code: def test_batch_size_None(self):
      """Test that the batch size is none if no operands have batching."""
      prod_op = ValidOp(qml.PauliX(0), qml.RX(1.0, wires=0))
      assert prod_op.batch_size is None
  
imports: from copy import copy
  import numpy
  import pytest
  import pennylane
  from pennylane.operation import DecompositionUndefinedError
  from pennylane.ops.op_math import CompositeOp, Prod, Sum, SProd
  from pennylane.wires import Wires
label_desc: Use image node_id 9 for calling the TestConstruction obj's underlying member method code with example usage: obj.test_batch_size_None() without return types