class_docstr: Test cases for unary operators.
class_docstr_tok: ["Test","cases","for","unary","operators","."]
code: def testInvertPermutationTwiceIsNoop(self):
      def invert_twice(x):
          return array_ops.invert_permutation(
              array_ops.invert_permutation(x)
          )
  
      for np_dtype in [np.int32, np.int64]:
          self._assertOpOutputMatchesExpected(
              invert_twice,
              np.array([1, 2, 0], np_dtype),
              expected=np.array([1, 2, 0], dtype=np_dtype),
          )
  
imports: import platform
  import unittest
  import numpy
  import six
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import bitwise_ops
  from tensorflow.python.ops import gen_functional_ops
  from tensorflow.python.ops import gen_nn_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import nn_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 24 for calling the UnaryOpsTest obj's underlying member method code with example usage: obj.testInvertPermutationTwiceIsNoop() and returns: array_ops