def test_world_coords(self):
cs1 = CoordSystem(origin=(1, 2, 3))
cs2 = CoordSystem(origin=(1, 1, 1))
box = Box()
box.world_coords = cs2
m = Mate(box, cs1)
self.assertEqual(m.world_coords, cs1 + cs2)
def test_mate(self):
mate = Mate(Box())
cs1 = CoordSystem(origin=(1, 1, 1))
box = Box()
box.world_coords = cs1
cs2 = CoordSystem(origin=(2, 3, 4))
coords = Mate(box, cs2)
c = Fixed(mate, coords) # given world_coords is from a mate
self.assertEqual(cs1 + cs2, c.world_coords)