code: def test_broadcasting(device):
      """Test that the trace_distance transform supports broadcasting"""
      dev = qml.device(device, wires=2)
  
      @qml.qnode(dev)
      def circuit_state(x):
          qml.IsingXX(x, wires=[0, 1])
          return qml.state()
  
      x = np.array([0.4, 0.6, 0.8])
      y = np.array([0.6, 0.8, 1.0])
      dist = qml.qinfo.trace_distance(
          circuit_state, circuit_state, wires0=[0], wires1=[1]
      )(x, y)
  
      expected = 0.5 * (
          np.abs(np.cos(x / 2) ** 2 - np.cos(y / 2) ** 2)
          + np.abs(np.sin(x / 2) ** 2 - np.sin(y / 2) ** 2)
      )
      assert qml.math.allclose(dist, expected)
  
imports: import pytest
  import pennylane
  from pennylane import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: test_broadcasting(device) and returns: qml