text: from unittest import TestCase
  
  from utils import montage_previewer
  
  
  class TestPreviewer(TestCase):
      def test_montage_previewer(self):
          file_path = "/home/wuyuanyi/nndata/nncrystal/validation/small extrapolation/extrapolation_20_30_1/images.bin"
          fig = montage_previewer(file_path, 5, 5)
          fig.show(True)
  
  