1 Not necessary to recalc sibling styles for :nth-child when no mutations have happened.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS internals.updateStyleAndReturnAffectedElementCount() is 1
7 PASS getComputedStyle(testElm, null).color is green
8 PASS successfullyParsed is true