code: def testIdentityMatrix(self):
      # 2x2
      identity = np.array([[1.0, 0], [0, 1.0]])
      self._verifySquareRootReal(identity)
      # 3x3
      identity = np.array([[1.0, 0, 0], [0, 1.0, 0], [0, 0, 1.0]])
      self._verifySquareRootReal(identity)
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import gen_linalg_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import stateless_random_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 8 for calling the SquareRootOpTest obj's underlying member method code with example usage: obj.testIdentityMatrix() without return types