code: def test_get_dimension_is_correct(self):
      assert self.encoder.get_input_dim() == 9
      assert self.encoder.get_output_dim() == 3
  
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 2 for calling the TestPassThroughEncoder obj's underlying member method code with example usage: obj.test_get_dimension_is_correct() without return types