code: def testStringToBytes(self, source, expected):
      expected = ragged_factory_ops.constant_value(
          expected, dtype=object
      )
      result = ragged_string_ops.string_bytes_split(source)
      self.assertAllEqual(expected, result)
  
file_path: tensorflow-upstream/tensorflow/python/kernel_tests/strings_ops/string_bytes_split_op_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the StringsToBytesOpTest obj's underlying member method code with example usage: obj.testStringToBytes(source, expected) without return types