def test_densityScale(self):
        dim = Nondimensional()
        dim._configure()
        dim.setDensityScale(2.0 * kilogram / meter**3)

        self.assertEqual(1.0 * meter, dim.getLengthScale())
        self.assertEqual(1.0 * pascal, dim.getPressureScale())
        self.assertEqual(1.0 * second, dim.getTimeScale())
        self.assertEqual(2.0 * kilogram / meter**3, dim.getDensityScale())
  def test_densityScale(self):
    dim = Nondimensional()
    dim._configure()
    dim.setDensityScale(2.0*kilogram/meter**3)

    self.assertEqual(1.0*meter, dim.lengthScale())
    self.assertEqual(1.0*pascal, dim.pressureScale())
    self.assertEqual(1.0*second, dim.timeScale())
    self.assertEqual(2.0*kilogram/meter**3, dim.densityScale())
    return