code: def test_dpcl_separator_invalid_type():
      with pytest.raises(ValueError):
          DPCLSeparator(
              input_dim=10,
              rnn_type="rnn",
              layer=2,
              unit=10,
              dropout=0.1,
              num_spk=2,
              emb_D=40,
              nonlinear="fff",
          )
  
imports: import pytest
  import torch
  from torch_complex import ComplexTensor
  from espnet2.enh.separator.dpcl_separator import DPCLSeparator
label_desc: Use image node_id 3 for calling a global function with example usage: test_dpcl_separator_invalid_type() without return types