2)");
test_valid_value("animation-timing-function", "steps(2, jump-start)");
test_valid_value("animation-timing-function", "steps(2, jump-end)", "steps(2)");
test_valid_value("animation-timing-function", "steps(2, jump-both)");
test_valid_value("animation-timing-function", "steps(2, jump-none)");
test_valid_value("animation-timing-function", "steps(calc(-10), start)");
test_valid_value("animation-timing-function", "steps(calc(5 / 2), start)", "steps(calc(2.5), start)");
test_valid_value("animation-timing-fu