code: def test_nmf_reshape_activations_2(self):
      batch, layers, neurons, position = 2, 6, 128, 10
      activations = np.ones((batch, layers, neurons, position))
      merged_activations = NMF.reshape_activations(
          activations, None, None, None
      )
      assert merged_activations.shape == (
          layers * neurons,
          batch * position,
      )
  
imports: from ecco import output
  import pytest
  import torch
  import numpy
  from ecco.output import NMF
  import ecco
label_desc: Use image node_id 14 for calling the TestOutput obj's underlying member method code with example usage: obj.test_nmf_reshape_activations_2() without return types