def METHOD_NAME(self):
    """Test relAngle function"""
    v = FreeCAD.Vector(0.5, 0.5, 0.5)
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.x), 45))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.y), 45))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.z), 45))
    v = FreeCAD.Vector(-0.5, 0.5, 0.5)
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.x), 135))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.y), -45))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.z), 45))
    v = FreeCAD.Vector(-0.5, -0.5, -0.5)
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.x), -135))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.y), -135))
    self.assertTrue(np.isclose(generator.relAngle(v, generator.refAxis.z), -135))