code: def test_spacing(self):
      x = numpy.zeros((100, 224, 224, 3), numpy.float32)
  
      image = Image(x, dimensions=3)
  
      assert image.spacing == (1.0, 1.0, 1.0)
  
imports: import numpy
  import numpy.random
  import numpy.testing
  from cellprofiler_core.image import Image
label_desc: Use image node_id 3 for calling the TestImage obj's underlying member method code with example usage: obj.test_spacing() without return types