class_docstr: Test that the transform integrates well with QNodes.
docstr: Test that CV operations are not supported.
docstr_tok: ["Test","that","CV","operations","are","not","supported","."]
code: def test_cv_op_error(self):
      """Test that CV operations are not supported."""
      dev = qml.device("default.gaussian", wires=3)
  
      @qml.qnode(dev)
      @qml.defer_measurements
      def qnode():
          qml.measure(0)
          qml.Rotation(0.123, wires=[0])
          return qml.expval(qml.NumberOperator(1))
  
      with pytest.raises(
          ValueError,
          match="Continuous variable operations and observables are not supported",
      ):
          qnode()
  
imports: import math
  import pytest
  import pennylane
  from pennylane.measurements import MidMeasureMP, MeasurementValue
  import pennylane.numpy
  from pennylane.devices import DefaultQubit
label_desc: Use image node_id 13 for calling the TestQNode obj's underlying member method code with example usage: obj.test_cv_op_error() and returns: qml