code: def test_spacing_volume(self):
      data = numpy.ones((5, 10, 10))
  
      x = cellprofiler_core.image.Image(
          image=data, dimensions=3, spacing=(0.77, 0.33, 0.33)
      )
  
      assert x.spacing == (0.77 / 0.33, 1.0, 1.0)
  
imports: import math
  import numpy
  import cellprofiler_core.image
label_desc: Use image node_id 17 for calling the TestImage obj's underlying member method code with example usage: obj.test_spacing_volume() without return types