code: def test_layer_position_zero_raises_valueerror(self, output_seq_1):
      with pytest.raises(ValueError, match=r".* set to 0*") as ex:
          actual = output_seq_1.layer_predictions(position=0)
  
imports: from ecco import output
  import pytest
  import torch
  import numpy
  from ecco.output import NMF
  import ecco
label_desc: Use image node_id 4 for calling the TestOutput obj's underlying member method code with example usage: obj.test_layer_position_zero_raises_valueerror(output_seq_1) without return types