ort.js"></script>
<style id="target">
    .a {
        border-width: 1px;
        border-style: solid;
        border-color: black;
    }
    .b {
        border-width: 1px;
        border-style: solid;
        border-color: black;
        border-image: linear-gradient(white,black);
    }
    .c {
        border: 1px solid black;
    }
</style>
<script>
    test(function() {
        let rule = document.getElementById('target').sheet.cssRules[0];
        assert_equals(rule.style.border, "", "border shorthand