Tests computing the highlight pseudo element style.

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


PASS internals.highlightPseudoElementColor('green-yellow-range', testdiv) is "rgb(0, 128, 0)"
PASS internals.highlightPseudoElementColor('green-yellow-range', testspan1) is "rgb(0, 128, 0)"
PASS internals.highlightPseudoElementColor('green-yellow-range', testspan2) is "rgb(255, 255, 0)"
PASS internals.highlightPseudoElementColor('green-yellow-range', testspan3) is "rgb(0, 128, 0)"
PASS internals.highlightPseudoElementColor('blue-range', testdiv) is ""
PASS internals.highlightPseudoElementColor('blue-range', testspan1) is ""
PASS internals.highlightPseudoElementColor('blue-range', testspan2) is ""
PASS internals.highlightPseudoElementColor('blue-range', testspan3) is "rgb(0, 0, 255)"
PASS internals.highlightPseudoElementColor('non-existent-range', testdiv) is ""
PASS internals.highlightPseudoElementColor('non-existent-range', testspan1) is ""
PASS internals.highlightPseudoElementColor('non-existent-range', testspan2) is ""
PASS internals.highlightPseudoElementColor('non-existent-range', testspan3) is ""
PASS successfullyParsed is true

TEST COMPLETE