css-scoping-shadow-slot-display-override.html

<!DOCTYPE html>
<html>
<head>
    <title>CSS Scoping Module Level 1 - overriding slot element's display value should generate boxes</title>
    <link rel="author" title="Ryosuke Niwa" href="mailto:[email protected]"/>
    <link rel="help" href="http://www.w3.org/TR/css-scoping-1/#selectors-data-model">
    <link rel="match" href="reference/green-box.html"/>
</head>
<body>
    <style>
        my-host {
            display: block;
            width: 100px;
            height: 100px;
            background: red;
        }
        my-host > div {
            width: 50px;
            height: 50px;
            background: green;
        }
    </style>
    <p>Test passes if you see a single 100px by 100px green box below.</p>
    <my-host>
        <div></div>
    </my-host>
    <script>

        try {
            var shadowHost = document.querySelector('my-host');
            shadowRoot = shadowHost.attachShadow({mode: 'open'});
            shadowRoot.innerHTML = '<slot style="display:block; border: solid 25px green;"></slot>';
        } catch (exception) {
            document.body.appendChild(document.createTextNode(exception));
        }

    </script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-scoping/css-scoping-shadow-slot-display-override.html