code: def test_animation_and_facet(binary_string):
      img = np.random.randint(255, size=(10, 9, 8, 7)).astype(np.uint8)
      fig = px.imshow(
          img,
          animation_frame=0,
          facet_col=1,
          binary_string=binary_string,
      )
      nslices = img.shape[0]
      assert len(fig.frames) == nslices
      assert len(fig.data) == img.shape[1]
  
imports: import plotly.express
  import numpy
  import pytest
  import xarray
  from PIL import Image
  from io import BytesIO
  import base64
  import datetime
  from plotly.express.imshow_utils import rescale_intensity
label_desc: Use image node_id 28 for calling a global function with example usage: test_animation_and_facet(binary_string) without return types