code: def test_dc_crn_separator_invalid_enc_layer():
      with pytest.raises(AssertionError):
          DC_CRNSeparator(
              input_dim=17,
              input_channels=[2, 2, 4],
              enc_layers=1,
          )
  
file_path: espnet/test/espnet2/enh/separator/test_dc_crn_separator.py
imports: import pytest
  import torch
  from packaging.version import parse
  from torch_complex import ComplexTensor
  from espnet2.enh.layers.complex_utils import is_complex
  from espnet2.enh.separator.dc_crn_separator import DC_CRNSeparator
label_desc: Use image node_id 3 for calling a global function with example usage: test_dc_crn_separator_invalid_enc_layer() without return types