def test_translated_3d(self):
vec = Vec(1, 0, 0)
res = vec.translated(1, 2, 3)
self.assertEqual(res, Vec(2, 2, 3))
self.assertTrue(isinstance(res, Vec))
def test_translated_3d(self):
vec = Vec(1, 0, 0)
res = vec.translated(1, 2, 3)
self.assertEqual(res, Vec(2, 2, 3))
self.assertTrue(isinstance(res, Vec))
