def dragon_collide_platform(self):
arena = Arena((100, 100))
dragon = Dragon(arena, (0, 0))
platform = Platform(arena, (30, 0), 2, 1)
dragon.move()
dragon.collide(platform)
self.assertTrue(dragon.position() == (10, 0, 20, 20))
def dragon_move_left(self):
arena = Arena((100, 100))
dragon = Dragon(arena, (50, 0))
dragon.go_left()
dragon.move()
self.assertTrue(dragon.position() == (47, 0, 20, 20))