class_docstr: Tests the flatten and unflatten functions
class_docstr_tok: ["Tests","the","flatten","and","unflatten","functions"]
docstr: Tests flattening a Wires object.
docstr_tok: ["Tests","flattening","a","Wires","object","."]
code: def test_flatten_wires(self):
      """Tests flattening a Wires object."""
      wires = qml.wires.Wires([3, 4])
      wires_int = [3, 4]
  
      wires = qml.utils._flatten(wires)
      for i, wire in enumerate(wires):
          assert wires_int[i] == wire
  
imports: import functools
  import itertools
  import pytest
  import numpy
  import pennylane
  import pennylane.utils
label_desc: Use image node_id 5 for calling the TestFlatten obj's underlying member method code with example usage: obj.test_flatten_wires() without return types