class_docstr: Tests of the automatic gradient method for CV circuits.
class_docstr_tok: ["Tests","of","the","automatic","gradient","method","for","CV","circuits","."]
docstr: Tests multiple measurements are not supported.
docstr_tok: ["Tests","multiple","measurements","are","not","supported","."]
code: def test_cv_gradient_multiple_measurement_error(self, gaussian_dev):
      """Tests multiple measurements are not supported."""
      par = anp.array([0.5, 1.3], requires_grad=True)
  
      def circuit(x, y):
          qml.Displacement(x, 0, wires=[0])
          qml.Rotation(y, wires=[0])
          qml.Displacement(0, x, wires=[0])
          return qml.expval(qml.QuadX(0)), qml.expval(
              qml.NumberOperator(0)
          )
  
      q = qml.QNode(circuit, gaussian_dev)
  
      with pytest.raises(
          ValueError,
          match="Computing the gradient of CV circuits that return more than one measurement is not possible.",
      ):
          qml.gradients.param_shift_cv(q, dev=gaussian_dev)(*par)
  
imports: import pytest
  import autograd
  import numpy
  import pennylane.numpy
  import pennylane
label_desc: Use image node_id 12 for calling the TestCVGradient obj's underlying member method code with example usage: obj.test_cv_gradient_multiple_measurement_error(gaussian_dev) and returns: qml,  qml