code: def test_negative_input():
      negative_int = np.random.randint(-4, -1, size=(5, 5))
      with testing.raises(ValueError):
          remove_small_objects(negative_int)
  
imports: import numpy
  import pytest
  from skimage.morphology import remove_small_objects, remove_small_holes
  from skimage._shared import testing
  from skimage._shared.testing import assert_array_equal, assert_equal
  from skimage._shared._warnings import expected_warnings
label_desc: Use image node_id 9 for calling a global function with example usage: test_negative_input() without return types