def test_move_to(self):
from gravita.ship import Ship
map = MockMap()
specs = MockSpecs(range=2)
ship = Ship(map, (0,1), specs)
self.assertEqual(map[2,0].ship, None)
ship.move_to((2,0))
self.assertEqual(map[2,0].ship, ship)
for sector in map.values():
if sector.location != (2, 0):
self.assertEqual(sector.ship, None)
