code: def test_get_face_boxes(self):
      coords = np.array([[0, 0, 0], [1, 0, 0], [0, 1, 0], [0, 0, 1]])
      boxes = box_utils.get_face_boxes(coords)
      # There are 4 faces to the shape created by coords
      assert len(boxes) == 4
  
file_path: deepchem/deepchem/utils/test/test_coordinate_box_utils.py
imports: import numpy
  import unittest
  from deepchem.utils import coordinate_box_utils
label_desc: Use image node_id 3 for calling the TestCoordinateBoxUtils obj's underlying member method code with example usage: obj.test_get_face_boxes() without return types