code: def test_map_overlap_no_depth(boundary):
      x = da.arange(10, chunks=5)
      y = x.map_overlap(
          lambda i: i, depth=0, boundary=boundary, dtype=x.dtype
      )
      assert_eq(y, x)
  
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 15 for calling a global function with example usage: test_map_overlap_no_depth(boundary) without return types