class_docstr: Test that pulse_odegen integrates correctly with QNodes.
class_docstr_tok: ["Test","that","pulse_odegen","integrates","correctly","with","QNodes","."]
docstr: Test that a simple qnode with two parameters
  can be differentiated with pulse_odegen and `argnums` works as expected.
docstr_tok: ["Test","that","a","simple","qnode","with","two","parameters","can","be","differentiated","with","pulse_odegen","and","`","argnums","`","works","as","expected","."]
code: def test_simple_qnode_expval_multiple_params(self, dev_name, argnums):
      """Test that a simple qnode with two parameters
      can be differentiated with pulse_odegen and `argnums` works as expected.
      """
      import jax
      import jax.numpy as jnp
  
      jax.config.update("jax_enable_x64", True)
      dev = qml.device(dev_name, wires=1)
      T = 0.2
      ham1 = qml.pulse.constant * Y(0)
      ham2 = qml.pulse.constant * Y(0)
  
      @qml.qnode(dev, interface="jax", diff_method=pulse_odegen)
      def circuit(param1, param2):
          qml.evolve(ham1)(param1, T)
          qml.evolve(ham2)(param2, T)
          return qml.expval(Z(0))
  
      param1, param2 = [jnp.array(0.4)], [jnp.array(0.5)]
      with qml.Tracker(dev) as tracker:
          grad = jax.jacobian(circuit, argnums=argnums)(param1, param2)
      p = (param1[0] + param2[0]) * T
      exp_grad = -2 * jnp.sin(2 * p) * T
      if argnums == [0, 1]:
          for g in grad:
              assert qml.math.allclose(g, exp_grad)
              assert (
                  tracker.totals["executions"] == 1 + 4
              )  # one forward pass, four shifted tapes
      else:
          assert qml.math.allclose(grad, exp_grad)
          assert tracker.totals["executions"] == 1 + 2
  
imports: import copy
  import pytest
  import numpy
  import pennylane
  from pennylane import numpy
  from pennylane.ops.qubit.special_unitary import pauli_basis_matrices, pauli_basis_strings
  from pennylane.math import expand_matrix
  from pennylane.gradients.pulse_gradient_odegen import _generate_tapes_and_coeffs, pulse_odegen, _insert_op, _nonzero_coeffs_and_words, _one_parameter_generators, _one_parameter_paulirot_coeffs, _parshift_and_contract
label_desc: Use image node_id 7 for calling the TestPulseOdegenIntegration obj's underlying member method code with example usage: obj.test_simple_qnode_expval_multiple_params(dev_name, argnums) and returns: qml