terpolation({
    property: 'clip-path',
    from: 'shape(from top left, smooth to 100% 50% with 20px 50px from start)',
    to: 'shape(from top left, smooth to 100% 50% with 20px 150px from start)',
  }, [
    {at: 0,    expect: 'shape(from top left, smooth to 100% 50% with 20px 50px from start)'},
    {at: 0.5,  expect: 'shape(from top left, smooth to 100% 50% with 20px 100px from start)'},
    {at: 1,    expect: 'shape(from top left, smooth to 100% 50% with 20px 150px from start)'},
]);

test_no_interpol