: 1.5, expect: 'shape(from 20% 20px, hline to 35%, vline to -20px, close)'},
      ]);

      test_interpolation({
        property: 'offset-path',
        from: 'shape(from 5% 5px, curve to 10% 10px with 0% 80px, curve to 30% 20px with 20% 50px / 25% 70px)',
        to: 'shape(from 15% 15px, curve to 20% 0px with 10% 60px, curve to 20% 30px with 30% 40px / -5% 100px)',
      }, [
        {at: -0.3, expect: 'shape(from 2% 2px, curve to 7% 13px with -3% 86px, curve to 33% 17px with 17% 53px / 34% 61px)'},
  