code: def test_none_boundaries():
      x = da.from_array(np.arange(16).reshape(4, 4), chunks=(2, 2))
      exp = boundaries(x, 2, {0: "none", 1: 33})
      res = np.array(
          [
              [33, 33, 0, 1, 2, 3, 33, 33],
              [33, 33, 4, 5, 6, 7, 33, 33],
              [33, 33, 8, 9, 10, 11, 33, 33],
              [33, 33, 12, 13, 14, 15, 33, 33],
          ]
      )
      assert_eq(exp, res)
  
imports: from __future__ import annotations
  import pytest
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import dask.array
  from dask.array.lib.stride_tricks import sliding_window_view
  from dask.array.overlap import boundaries, constant, ensure_minimum_chunksize, nearest, overlap, overlap_internal, periodic, reflect, trim_internal
  from dask.array.utils import assert_eq, same_keys
label_desc: Use image node_id 31 for calling a global function with example usage: test_none_boundaries() without return types