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

test_specified_maps(function(map) {
    verify_map_no_append(map, generate_property('<custom-ident>+'), new CSSKeywordValue('foo'));
}, 'Appending a CSSKeywordValue to <custom-ident>+ is not allowed');

test_specified_maps(function(map) {
    verify_map_no_append(map, generate_property('<image>+'), image_value);
}, 'Appending a CSSImageVa