docstr: Test that nothing happens if no wires are provided to the transform.
docstr_tok: ["Test","that","nothing","happens","if","no","wires","are","provided","to","the","transform","."]
code: def test_null_if_no_wires_provided(self):
      """Test that nothing happens if no wires are provided to the transform."""
  
      tape1 = qml.tape.QuantumScript(
          [qml.S("b")], [qml.expval(qml.PauliZ(0))]
      )
      batch, _ = validate_device_wires(tape1)
      assert batch[0] is tape1
  
imports: import pytest
  import pennylane
  from pennylane.operation import Operation
  from pennylane.tape import QuantumScript
  from pennylane import DeviceError
  from pennylane.devices.preprocess import no_sampling, validate_device_wires, validate_multiprocessing_workers, validate_adjoint_trainable_params, _operator_decomposition_gen, decompose, validate_observables, validate_measurements
label_desc: Use image node_id 2 for calling the TestValidateDeviceWires obj's underlying member method code with example usage: obj.test_null_if_no_wires_provided() without return types