code: def test_circle_se():
      from mahotas.morph import circle_se
  
      for r in (4, 5):
          c = circle_se(r)
          assert len(c) == (2 * r + 1)
          assert len(c) == len(c.T)
          assert not c.all()
          assert c.any()
  
      with pytest.raises(ValueError):
          circle_se(-1)
  
imports: import mahotas
  import numpy
  from mahotas.morph import get_structuring_elem, subm, tophat_open, tophat_close
  import pytest
label_desc: Use image node_id 14 for calling a global function with example usage: test_circle_se() without return types