code: def test_composes(self):
      tensor = torch.zeros(2, 10, 9)
      output = self.encoder(tensor)
  
      for encoder in self.encoder.encoders:
          tensor = encoder(tensor)
  
      numpy.testing.assert_array_almost_equal(
          output.detach().cpu().numpy(), tensor.detach().cpu().numpy()
      )
  
imports: import torch
  import numpy
  import pytest
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.modules.seq2seq_encoders import ComposeEncoder, FeedForwardEncoder, Seq2SeqEncoder
  from allennlp.modules import FeedForward
label_desc: Use image node_id 3 for calling the TestPassThroughEncoder obj's underlying member method code with example usage: obj.test_composes() without return types