class_docstr: Tests for the pow method of non-parametric qutrit operations.
docstr: Test that ops with a period of 2 or 3 raised to a non-integer power raise an error
docstr_tok: ["Test","that","ops","with","a","period","of","2","or","3","raised","to","a","non-integer","power","raise","an","error"]
code: def test_period_two_three_noninteger_power(self, op):
      """Test that ops with a period of 2 or 3 raised to a non-integer power raise an error"""
      with pytest.raises(qml.operation.PowUndefinedError):
          op.pow(1.234)
  
imports: import copy
  import pytest
  import numpy
  from gate_data import TSHIFT, TCLOCK, TADD, TSWAP, TH
  import pennylane
  from pennylane.wires import Wires
label_desc: Use image node_id 4 for calling the TestPowMethod obj's underlying member method code with example usage: obj.test_period_two_three_noninteger_power(op) without return types