 10% 10px with 0% 80px, smooth to 30% 20px)',
        to: 'path("M 15 15 S 10 60 20 0 T 20 30")',
      }, [
        {at: -0.3, expect: 'shape(from calc(6.5% - 4.5px) 2px, smooth to calc(13% - 6px) 13px with calc(0% - 3px) 86px, smooth to calc(39% - 6px) 17px)'},
        {at: 0, expect: 'shape(from 5% 5px, smooth to 10% 10px with 0% 80px, smooth to 30% 20px)'},
        {at: 0.5, expect: 'shape(from calc(2.5% + 7.5px) 10px, smooth to calc(5% + 10px) 5px with calc(0% + 5px) 70px, smooth to calc(15% + 10px) 25