code: def test_activation_atlas():
      model = AlexNet()
      layer = model.layers[1]
      atlas = activation_atlas(model, layer, number_activations=subset)
      save(atlas, "tests/recipes/results/activation_atlas/atlas.jpg")
  
imports: import pytest
  from lucid.modelzoo.aligned_activations import NUMBER_OF_AVAILABLE_SAMPLES
  from lucid.modelzoo.vision_models import AlexNet, InceptionV1
  from lucid.recipes.activation_atlas import activation_atlas, aligned_activation_atlas
  from lucid.misc.io import save
label_desc: Use image node_id 1 for calling a global function with example usage: test_activation_atlas() without return types