code: def testWithPythonBase64(self):
      for pad in (False, True):
          self._RunTest(b"", pad=pad)
  
          for _ in range(100):
              length = np.random.randint(1024 * 1024)
              msg = np.random.bytes(length)
              self._RunTest(msg, pad=pad)
  
file_path: tensorflow/tensorflow/python/kernel_tests/strings_ops/base64_ops_test.py
imports: import base64
  import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the Base64OpsTest obj's underlying member method code with example usage: obj.testWithPythonBase64() without return types