compat/webkit-gradient-sign.html

<!DOCTYPE html>
<link rel="help" href="https://compat.spec.whatwg.org/#css-gradients-webkit-linear-gradient">
<meta name="assert" content="Check that we do not crash even if color-stop() is not resolvable at parse time.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(() => {
    assert_true(CSS.supports("background-image", "-webkit-gradient(linear, left top, left bottom, color-stop(calc(0.5 + 0.001 * sign(1em - 1px)), blue))"));
});

test(() => {
    assert_true(CSS.supports("background-image", "-webkit-gradient(linear, left top, left bottom, color-stop(calc(50% + 0.001% * sign(1em - 1px)), blue))"));
});
</script>