def test_move_stops_on_edge_overflow(self):
mars = Rover(self.landscape, (5, 5), Direction.E)
self.assertFalse(mars.move_forward())
self.assertTrue(mars.is_position((5, 5)))
mars.turn_left()
self.assertTrue(mars.is_direction(Direction.N))
self.assertFalse(mars.move_backwards())
self.assertTrue(mars.is_position((5, 5)))
def test_little_journey(self):
landscape = ((0, 0, 0, 1, 0, 0),
(0, 1, 0, 0, 0, 0),
(0, 0, 0, 1, 0, 0),
(0, 0, 0, 0, 0, 1),
(0, 0, 1, 1, 1, 0),
(0, 0, 0, 0, 0, 0))
mars = Rover(landscape, (0, 0), Direction.E)
# We move two to the right, but the next one finds an obstacle
self.assertTrue(mars.move_forward())
self.assertTrue(mars.move_forward())
self.assertFalse(mars.move_forward())
self.assertTrue(mars.is_direction(Direction.E))
self.assertTrue(mars.is_position((0,2)))
# We turn to the South and move three spaces, the next is an obstacle
mars.turn_right()
self.assertTrue(mars.move_forward())
self.assertTrue(mars.move_forward())
self.assertTrue(mars.move_forward())
self.assertFalse(mars.move_forward())
self.assertTrue(mars.is_direction(Direction.S))
self.assertTrue(mars.is_position((3,2)))
# We turn to the West and move backwards two spaces, the next is an obstacle
mars.turn_right()
self.assertTrue(mars.move_backwards())
self.assertTrue(mars.move_backwards())
self.assertFalse(mars.move_backwards())
self.assertTrue(mars.is_direction(Direction.W))
self.assertTrue(mars.is_position((3,4)))
def test_move_stops_on_obstacle(self):
mars = Rover(self.landscape, (1, 3), Direction.N)
self.assertFalse(mars.move_forward())
self.assertTrue(mars.is_position((1, 3)))
self.assertFalse(mars.move_backwards())
self.assertTrue(mars.is_position((1, 3)))
def test_move_backwards_changes_position(self):
mars = Rover(self.landscape, (0, 2), Direction.E)
self.assertTrue(mars.move_backwards())
self.assertTrue(mars.is_position((0, 1)))
self.assertTrue(mars.move_backwards())
self.assertTrue(mars.is_position((0, 0)))