code: def test_in_out():
      layer = Decoder(
          in_channels=256,
          frame_channels=80,
          r=2,
          memory_size=4,
          attn_windowing=False,
          attn_norm="sigmoid",
          attn_K=5,
          attn_type="original",
          prenet_type="original",
          prenet_dropout=True,
          forward_attn=True,
          trans_agent=True,
          forward_attn_mask=True,
          location_attn=True,
          separate_stopnet=True,
      )
      dummy_input = T.rand(4, 8, 256)
      dummy_memory = T.rand(4, 2, 80)
  
      output, alignment, stop_tokens = layer(
          dummy_input, dummy_memory, mask=None
      )
  
      assert output.shape[0] == 4
      assert output.shape[1] == 80, "size not {}".format(
          output.shape[1]
      )
      assert output.shape[2] == 2, "size not {}".format(output.shape[2])
      assert stop_tokens.shape[0] == 4
  
imports: import unittest
  import torch
  from TTS.tts.layers.tacotron import Prenet, CBHG, Decoder, Encoder
  from TTS.tts.layers.losses import L1LossMasked, SSIMLoss
  from TTS.tts.utils.generic_utils import sequence_mask
label_desc: Use image node_id 1 for calling the DecoderTests obj's underlying member method code with example usage: obj.test_in_out() without return types