code: def test_elu(self):
      self.run_layer_test(
          elu.ELU,
          init_kwargs={},
          input_shape=(2, 3, 4),
          supports_masking=True,
      )
  
file_path: keras/keras/layers/activations/elu_test.py
imports: import numpy
  import pytest
  from keras import testing
  from keras.layers.activations import elu
label_desc: Use image node_id 2 for calling the ELUTest obj's underlying member method code with example usage: obj.test_elu() without return types