code: def test_actor_bounds(actor):
      assert isinstance(actor.bounds, tuple)
      assert np.allclose(actor.bounds, (-0.5, 0.5, -0.5, 0.5, 0, 0))
  
imports: import platform
  import numpy
  import pytest
  import vtk
  import pyvista
  from pyvista import examples
label_desc: Use image node_id 19 for calling a global function with example usage: test_actor_bounds(actor) without return types