transition-timing-function", "steps(2, jump-start)");
test_computed_value("transition-timing-function", "steps(2, jump-end)", "steps(2)");
test_computed_value("transition-timing-function", "steps(2, jump-both)");
test_computed_value("transition-timing-function", "steps(2, jump-none)");
test_computed_value("transition-timing-function", "steps(calc(2 * sibling-index()), jump-none)", "steps(2, jump-none)");
test_computed_value("transition-timing-function", "steps(sibling-index(), jump-none)", "steps(2, jump-no