class_docstr: Test that Symbolic Operators queue and update base metadata.
class_docstr_tok: ["Test","that","Symbolic","Operators","queue","and","update","base","metadata","."]
docstr: Test symbolic op queues and updates base metadata.
docstr_tok: ["Test","symbolic","op","queues","and","updates","base","metadata","."]
code: def test_queuing(self):
      """Test symbolic op queues and updates base metadata."""
      with qml.queuing.AnnotatedQueue() as q:
          base = Operator("a")
          op = SymbolicOp(base)
  
      assert base not in q
      assert q.queue[0] is op
      assert len(q) == 1
  
imports: from copy import copy
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.operation import Operator
  from pennylane.ops.op_math import SymbolicOp, ScalarSymbolicOp
  from pennylane.wires import Wires
label_desc: Use image node_id 1 for calling the TestQueuing obj's underlying member method code with example usage: obj.test_queuing() without return types