code: def test_get_relative_position_index(self):
      out = get_relative_position_index(win_h=24, win_w=24)
      self.assertEqual(out.shape, (576, 576))
  
imports: import unittest
  from towhee.models.utils.get_relative_position_index import get_relative_position_index
label_desc: Use image node_id 1 for calling the GetRelativePositionIndexTest obj's underlying member method code with example usage: obj.test_get_relative_position_index() without return types