def METHOD_NAME(self):
    self.Body = self.Doc.addObject('PartDesign::Body','Body')
    self.Box = self.Doc.addObject('PartDesign::AdditiveBox','Box')
    self.Box.Length = 11
    self.Box.Width = 11
    self.Box.Height = 11
    self.Body.addObject(self.Box)
    self.Doc.recompute()
    self.Box001 = self.Doc.addObject('PartDesign::SubtractiveBox','Box001')
    self.Box001.Length = 10
    self.Box001.Width = 10
    self.Box001.Height = 10
    self.Body.addObject(self.Box001)
    self.Doc.recompute()
    self.assertAlmostEqual(self.Box001.Shape.Volume, 11**3-10**3)