class_docstr: Test various APIs that have been changed in 2.0.
code: def testRenames(self):
      self.assertAllClose(1.04719755, tf.acos(0.5))
      self.assertAllClose(0.5, tf.rsqrt(4.0))
  
file_path: tensorflow/tensorflow/tools/compatibility/testdata/test_file_v1_12.py
imports: import tensorflow.compat.v1
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the TestUpgrade obj's underlying member method code with example usage: obj.testRenames() without return types