<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#comp-func">
<link rel="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/parsing-testcommon.js"></script>
<script>
function test_invalid_length(value) {
  test_invalid_value('letter-spacing', value);
}

test_invalid_length('clamp()');
test_invalid_length('clamp( )');
test_invalid_length('clamp(,)');
test_invalid_length('clamp(1px, )');
test_invalid_length('clamp(, 1px)');
test_invalid_length('clamp(1px, 1px)');
test_invalid_length('clamp(1px, , 1px)');
test_invalid_length('clamp(, 1px, 1px)');
test_invalid_length('clamp(1px, 1px, )');
test_invalid_length('clamp(1px, 1px, 1px, )');
test_invalid_length('clamp(1px 1px 1px)');
test_invalid_length('clamp(0, 10rem, 100%)');
</script>
