code: def test_bad_wire_mapping():
      """Test that an error is raised if the wires cant be mapped with map_wires."""
  
      class BadWireMap(Operator):
          def __init__(self, op1):
              self.hyperparameters["op1"] = op1
              super().__init__(wires=op1.wires)
  
          @property
          def wires(self):
              return self.hyperparameters["op1"].wires
  
      with pytest.raises(
          AssertionError, match=r"wires must be mappable"
      ):
          assert_valid(BadWireMap(qml.PauliX(0)), skip_pickle=True)
  
imports: import pytest
  import numpy
  import pennylane
  from pennylane.operation import Operator
  from pennylane.ops.functions import assert_valid
label_desc: Use image node_id 5 for calling a global function with example usage: test_bad_wire_mapping() and returns: self