eified as CSSMathSum');

test(function(){
    verify_computed_type(generate_property('<length>'), null, CSSUnitValue);
    verify_computed_type(generate_property('fail | <length> '), '10px', CSSUnitValue);
}, 'Computed <length> is reified as CSSUnitValue');

test(function(){
    verify_computed_type(generate_property('<number>'), null, CSSUnitValue);
    verify_computed_type(generate_property('fail | <number> '), '42', CSSUnitValue);
}, 'Computed <number> is reified as CSSUnitValue');

test(function(){
    