docstr: Test that the ctrl is correctly taken into account
code: def test_ctrl(self):
      """Test that the ctrl is correctly taken into account"""
      res = qml.matrix(qml.ctrl(qml.PauliX, 0))(wires=1)
      expected = CNOT
      assert np.allclose(res, expected)
  
imports: from functools import reduce, partial
  from warnings import catch_warnings
  import pytest
  from gate_data import I, X, Y, Z, H, S, CNOT, Rotx, Roty
  import pennylane
  from pennylane import numpy
  from pennylane.transforms.op_transforms import OperationTransformError
label_desc: Use image node_id 9 for calling the TestSingleOperation obj's underlying member method code with example usage: obj.test_ctrl() without return types