xpect: 'rgb(0, 0, 0) 0px 0px 0px 9px inset'},
  {at: 1, expect: 'rgb(0, 0, 0) 0px 0px 0px 15px inset'},
  {at: 1.5, expect: 'rgb(0, 0, 0) 0px 0px 0px 22.5px inset'},
]);

// Test unmatched inset
test_no_interpolation({
  property: 'box-shadow',
  from: '10px 20px yellow, 5px 10px green',
  to: 'inset 5px 10px green, 15px 20px blue'
});
</script>
</body>
