<script>
test_valid_value("animation-timing-function", "linear");

test_valid_value("animation-timing-function", "ease");
test_valid_value("animation-timing-function", "ease-in");
test_valid_value("animation-timing-function", "ease-out");
test_valid_value("animation-timing-function", "ease-in-out");
test_valid_value("animation-timing-function", "cubic-bezier(0.1, 0.2, 0.8, 0.9)");
test_valid_value("animation-timing-function", "cubic-bezier(0, -2, 1, 3)");
test_valid_value("animation-timing-function", "cubic