<length-percentage>'), null, CSSUnitValue);
    verify_computed_type(generate_property('fail | <length-percentage> '), '10px', CSSUnitValue);
}, 'Computed <length-percentage> [px] is reified as CSSUnitValue');

test(function(){
    verify_computed_type(generate_property({syntax: '<length-percentage>', initialValue: 'calc(10% + 10px)'}), null, CSSMathSum);
    verify_computed_type(generate_property('fail | <length-percentage> '), 'calc(10px + 10%)', CSSMathSum);
}, 'Computed <length-percentage> [px + %] is r