code: def testDatasetCompression(self, element):
      element = element._obj
  
      dataset = dataset_ops.Dataset.from_tensors(element)
      element_spec = dataset.element_spec
  
      dataset = dataset.map(lambda *x: compression_ops.compress(x))
      dataset = dataset.map(
          lambda x: compression_ops.uncompress(x, element_spec)
      )
      self.assertDatasetProduces(dataset, [element])
  
imports: from collections import namedtuple
  from absl.testing import parameterized
  from tensorflow.python.data.experimental.ops import compression_ops
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.util import structure
  from tensorflow.python.eager import context
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the CompressionOpsTest obj's underlying member method code with example usage: obj.testDatasetCompression(element) without return types