code: def test_base_networks():
      network_names = get_base_networks()
      input_shape = (4,)
  
      for name in network_names:
          model = base_network(name, input_shape)
          assert isinstance(model, Model)
  
imports: from tensorflow import keras
  from tensorflow.keras.models import Model, Sequential
  from tensorflow.keras.layers import Dense
  import numpy
  from ivis.nn.network import get_base_networks, base_network, triplet_network
label_desc: Use image node_id 1 for calling a global function with example usage: test_base_networks() without return types