<resolution>+'), CSS.dpi(10));
}, 'Appending a CSSUnitValue to <resolution>+ is not allowed');

test_specified_maps(function(map) {
    verify_map_no_append(map, generate_property('<time>+'), CSS.s(10));
}, 'Appending a CSSUnitValue to <time>+ is not allowed');

test_specified_maps(function(map) {
    verify_map_no_append(map, generate_property('<transform-list>'), zero_matrix);
}, 'Appending a CSSKeywordValue to <transform-list> is not allowed');

test_specified_maps(function(map) {
    verify_map_no_appen