code: def test_chan_vese_small_disk_level_set():
      img = np.zeros((10, 10))
      img[3:6, 3:6] = 1
      result = chan_vese(
          img, mu=0.0, tol=1e-3, init_level_set="small disk"
      )
      assert_array_equal(result.astype(float), img)
  
file_path: scikit-image/skimage/segmentation/tests/test_chan_vese.py
imports: import numpy
  import pytest
  from numpy.testing import assert_array_equal
  from skimage._shared.utils import _supported_float_type
  from skimage.segmentation import chan_vese
label_desc: Use image node_id 2 for calling a global function with example usage: test_chan_vese_small_disk_level_set() without return types