code: def test_cropping_1d_with_dynamic_spatial_dim(self):
      input_layer = layers.Input(batch_shape=(1, None, 7))
      cropped = layers.Cropping1D((1, 2))(input_layer)
      self.assertEqual(cropped.shape, (1, None, 7))
  
file_path: keras/keras/layers/reshaping/cropping1d_test.py
imports: import numpy
  import pytest
  from keras import layers
  from keras import ops
  from keras import testing
label_desc: Use image node_id 2 for calling the Cropping1DTest obj's underlying member method code with example usage: obj.test_cropping_1d_with_dynamic_spatial_dim() without return types