code: def test_start_label_fix():
      """Tests the fix for a bug producing a label < start_label (gh-6240).
  
      For the v0.19.1 release, the `img` and `slic` call as below result in two
      non-contiguous regions with value 0 despite `start_label=1`. We verify that
      the minimum label is now `start_label` as expected.
      """
  
      # generate bumpy data that gives unexpected label prior to bug fix
      rng = np.random.default_rng(9)
      img = rng.standard_normal((8, 13)) > 0
      img = filters.gaussian(img, sigma=1)
  
      start_label = 1
      superp = slic(
          img,
          start_label=start_label,
          channel_axis=None,
          n_segments=6,
          compactness=0.01,
          enforce_connectivity=True,
          max_num_iter=10,
      )
      assert superp.min() == start_label
  
imports: from itertools import product
  import numpy
  import pytest
  from numpy.testing import assert_equal
  from skimage import data, filters, img_as_float
  from skimage._shared.testing import run_in_parallel, expected_warnings
  from skimage.segmentation import slic
label_desc: Use image node_id 26 for calling a global function with example usage: test_start_label_fix() without return types