class_docstr: Test cases for binary operators.
code: def testPow(self):
      for dtype in self.float_types:
          rtol = 1e-14 if dtype == np.float64 else None
  
          self._testBinary(
              math_ops.pow,
              dtype(3),
              dtype(4),
              expected=dtype(81),
              rtol=rtol,
          )
  
          self._testBinary(
              math_ops.pow,
              np.array([1, 2], dtype=dtype),
              np.zeros(shape=[0, 2], dtype=dtype),
              expected=np.zeros(shape=[0, 2], dtype=dtype),
              rtol=rtol,
          )
          self._testBinary(
              math_ops.pow,
              np.array([10, 4], dtype=dtype),
              np.array([2, 3], dtype=dtype),
              expected=np.array([100, 64], dtype=dtype),
              rtol=rtol,
          )
          self._testBinary(
              math_ops.pow,
              dtype(2),
              np.array([3, 4], dtype=dtype),
              expected=np.array([8, 16], dtype=dtype),
              rtol=rtol,
          )
          self._testBinary(
              math_ops.pow,
              np.array([[2], [3]], dtype=dtype),
              dtype(4),
              expected=np.array([[16], [81]], dtype=dtype),
              rtol=rtol,
          )
  
imports: import itertools
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import bitwise_ops
  from tensorflow.python.ops import gen_array_ops
  from tensorflow.python.ops import gen_math_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
  from tensorflow.python.platform import test
label_desc: Use image node_id 8 for calling the BinaryOpsTest obj's underlying member method code with example usage: obj.testPow() without return types