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chromium/third_party/blink/web_tests/fast/table/auto-table-columns-dont-scale.html 

<!DOCTYPE html>
<style>
td { padding: 0px; }
table { border-spacing: 0px; }
.yellow { background-color: yellow; }
.red { background-color: red; }
.green {  background-color: green; }
</style>
</head>
This test passes if no red is showing.
<table id="outerTable" style="width:0px;" class="yellow" data-expected-width="200">
    <tr>
        <td>
            <table class="red">
                <tr>
                    <td style="width:50%;">
                        <div style="width:200px;height:20px" class="green"></div>
                    </td>
                </tr>
            </table>
        </td>
    </tr>
</table>
<script src="../../resources/check-layout.js"></script>
<script>
checkLayout('#outerTable');
</script>