new_contents: # coding: utf-8
  from __future__ import unicode_literals
  
  from ..util import make_tempdir
  from ...pipeline import TokenVectorEncoder as Tensorizer
  
  import pytest
  
  
  def test_serialize_tensorizer_roundtrip_bytes(en_vocab):
      tensorizer = Tensorizer(en_vocab)
      tensorizer.model = tensorizer.Model()
      tensorizer_b = tensorizer.to_bytes()
      new_tensorizer = Tensorizer(en_vocab).from_bytes(tensorizer_b)
      assert new_tensorizer.to_bytes() == tensorizer_b
  
  
  def test_serialize_tensorizer_roundtrip_disk(en_vocab):
      tensorizer = Tensorizer(en_vocab)
      tensorizer.model = tensorizer.Model()
      with make_tempdir() as d:
          file_path = d / 'tensorizer'
          tensorizer.to_disk(file_path)
          tensorizer_d = Tensorizer(en_vocab).from_disk(file_path)
          assert tensorizer.to_bytes() == tensorizer_d.to_bytes()
  
subject: Add serialization tests for tensorizer