code: def test_upsampling_1d_with_dynamic_batch_size(self):
      x = KerasTensor([None, 2, 3])
      self.assertEqual(
          layers.UpSampling1D(size=2)(x).shape, (None, 4, 3)
      )
      self.assertEqual(
          layers.UpSampling1D(size=4)(x).shape, (None, 8, 3)
      )
  
file_path: keras/keras/layers/reshaping/up_sampling1d_test.py
imports: import numpy
  import pytest
  from keras import layers
  from keras import testing
  from keras.backend.common.keras_tensor import KerasTensor
label_desc: Use image node_id 4 for calling the UpSamplingTest obj's underlying member method code with example usage: obj.test_upsampling_1d_with_dynamic_batch_size() without return types