class_docstr: Tests for the ControlledQutritUnitary operation
class_docstr_tok: ["Tests","for","the","ControlledQutritUnitary","operation"]
docstr: Test that ControlledQutritUnitary raises a DecompositionUndefinedError.
docstr_tok: ["Test","that","ControlledQutritUnitary","raises","a","DecompositionUndefinedError","."]
code: def test_no_decomp(self):
      """Test that ControlledQutritUnitary raises a DecompositionUndefinedError."""
      with pytest.raises(qml.operation.DecompositionUndefinedError):
          qml.ControlledQutritUnitary(
              U_thadamard_01, wires=0, control_wires=1
          ).decomposition()
  
imports: import pytest
  import numpy
  from scipy.stats import unitary_group
  from gate_data import TSWAP
  import pennylane
  from pennylane.wires import Wires
  from pennylane.operation import DecompositionUndefinedError
label_desc: Use image node_id 9 for calling the TestControlledQutritUnitary obj's underlying member method code with example usage: obj.test_no_decomp() without return types