Check if an OPTION style is serialized with comparison with the parent OPTGROUP style.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS params.children[1].type is "optgroup"
PASS params.children[1].children[0].type is undefined.
PASS params.children[1].children[0].style.color is "rgb(0, 0, 0)"
PASS params.children[1].children[0].style.backgroundColor is "rgb(255, 255, 255)"
PASS successfullyParsed is true

TEST COMPLETE

foo
bar
baz