code: def test_sequential(self):
      model = Sequential()
      model.add(InputLayer(input_shape=(8,)))
      model.add(Dense(10))
      model.add(Dense(12))
      input_shape = model.get_input_shape()
      output_shape = model.get_output_shape()
      np.testing.assert_allclose((8,), input_shape[1:])
      np.testing.assert_allclose((12,), output_shape[1:])
  
imports: import pytest
  import shutil
  from zoo.feature.common import ChainedPreprocessing
  from zoo.feature.image import *
  from zoo.pipeline.api.keras.layers import *
  from zoo.pipeline.api.keras.models import *
  from test.zoo.pipeline.utils.test_utils import ZooTestCase
label_desc: Use image node_id 1 for calling the TestSimpleIntegration obj's underlying member method code with example usage: obj.test_sequential() without return types