code: def test_pow_array():
      a = pd.array([0, 0, 0, 1, 1, 1, None, None, None])
      b = pd.array([0, 1, None, 0, 1, None, 0, 1, None])
      result = a**b
      expected = pd.array([1, 0, None, 1, 1, 1, 1, None, None])
      tm.assert_extension_array_equal(result, expected)
  
imports: import operator
  import numpy
  import pytest
  import pandas
  import pandas._testing
  from pandas.core import ops
  from pandas.core.arrays import FloatingArray
label_desc: Use image node_id 9 for calling a global function with example usage: test_pow_array() without return types