20px with 20% 50px / 25% 70px)'},
        {at: 0.5, expect: 'shape(from 10% 10px, curve by 15% 5px with 5% 70px, curve by 25% 25px with 25% 45px / 10% 85px)'},
        {at: 1.5, expect: 'shape(from 20% 20px, curve by 25% -5px with 15% 50px, curve by 15% 35px with 35% 35px / -20% 115px)'},
      ]);

      test_interpolation({
        property: 'offset-path',
        from: 'shape(from 5% 5px, smooth to 10% 10px with 0% 80px, smooth to 30% 20px)',
        to: 'shape(from 15% 15px, smooth to 20% 0px with 10% 6