def test_set_position(self):
geo = Geometry(0, 0, 100, 200)
self.assertEqual(geo.x, 0)
self.assertEqual(geo.y, 0)
# set postion
geo.set_position(10, 10)
self.assertEqual(geo.x, 10)
self.assertEqual(geo.y, 10)
# set position relative to gravity
geo.set_position(10, 10, Gravity(0, 0))
self.assertEqual(geo.x, 10)
self.assertEqual(geo.y, 10)
geo.set_position(110, 210, Gravity(1, 1))
self.assertEqual(geo.x, 10)
self.assertEqual(geo.y, 10)
geo.set_position(60, 110, Gravity(0.5, 0.5))
self.assertEqual(geo.x, 10)
self.assertEqual(geo.y, 10)
