-path',
        from: 'shape(from 5% 5px, smooth by 10% 10px with 0% 80px, smooth by 30% 20px)',
        to: 'shape(from 15% 15px, smooth by 20% 0px with 10% 60px, smooth by 20% 30px)',
      }, [
        {at: -0.3, expect: 'shape(from 2% 2px, smooth by 7% 13px with -3% 86px, smooth by 33% 17px)'},
        {at: 0, expect: 'shape(from 5% 5px, smooth by 10% 10px with 0% 80px, smooth by 30% 20px)'},
        {at: 0.5, expect: 'shape(from 10% 10px, smooth by 15% 5px with 5% 70px, smooth by 25% 25px)'},
        {