code: def test_no_chunks():
      a = np.ones(1 * 4 * 8 * 9).reshape(1, 4, 8, 9)
  
      def add_42(arr):
          return arr + 42
  
      expected = add_42(a)
      result = apply_parallel(add_42, a)
  
      assert_array_almost_equal(result, expected)
  
file_path: scikit-image/skimage/util/tests/test_apply_parallel.py
imports: import numpy
  from skimage._shared.testing import assert_array_almost_equal, assert_equal
  from skimage import color, data, img_as_float
  from skimage.filters import threshold_local, gaussian
  from skimage.util.apply_parallel import apply_parallel
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: test_no_chunks() and returns: unknown