code: def test_zero_crop():
      arr = np.arange(45).reshape(9, 5)
      out = crop(arr, 0)
      assert out.shape == (9, 5)
  
file_path: scikit-image/skimage/util/tests/test_arraycrop.py
imports: import numpy
  from skimage.util import crop
  from skimage._shared.testing import assert_array_equal, assert_equal
label_desc: Use image node_id 7 for calling a global function with example usage: test_zero_crop() without return types