Blitz - WPT: visibility-collapse-col-002.html

wpt / css / css-tables / visibility-collapse-col-002.html

Data from commit:
a50cb89 wpt: run reference-named files which are themselves tests (#836) (2026-09-03)

Subtest	Status	Message
col visibility:collapse doesn't change table height	PASS
col visibility:collapse changes table width	FAIL	assert_equals: col visibility:collapse changes table width expected 10 but got 222

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/css/css-tables/visibility-collapse-col-002.html

<!doctype html>
<meta charset="utf-8">
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<link rel='stylesheet' href='support/base.css' />
<link rel="author" title="Joy Yu" href="mailto:joysyu@mit.edu">
<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-width">
<style>
    x-table {
      border: 5px solid black;
    }
    x-table span {
        display: inline-block;
        vertical-align: top;
        background: lime;
        margin: 3px;
        height: 100px;
        width: 100px;
    }
</style>
<main>
    <h1>Visibility collapse</h1>
    <a href="https://drafts.csswg.org/css-tables-3/#computing-the-table-width">Spec</a>
    <p>
    Setting a column to visibility:collapse changes table width but not height.
    </p>
    <x-table id="one">
      <x-tbody>
        <x-tr>
            <x-td>
                <span>row 1</span>
            </x-td>
            <x-td>
                <span></span>
            </x-td>
        </x-tr>
        <x-tr>
            <x-td>
                <span>row 2</span>
            </x-td>
            <x-td>
                <span></span>
            </x-td>
        </x-tr>
        <x-tr>
            <x-td>
                <span>row 3</span>
            </x-td>
            <x-td>
                <span style="height:50px"></span>
            </x-td>
        </x-tr>
      </x-tbody>
    </x-table>
    Second table is identical to first except both column groups have been collapsed.
    5px borders are still visible.
    <x-table id="two">
      <x-colgroup style="visibility:collapse;"></x-colgroup>
      <x-colgroup style="visibility:collapse;"></x-colgroup>
      <x-tbody>
        <x-tr>
            <x-td>
                <span>row 1</span>
            </x-td>
            <x-td>
                <span></span>
            </x-td>
        </x-tr>
        <x-tr>
            <x-td>
                <span>row 2</span>
            </x-td>
            <x-td>
                <span></span>
            </x-td>
        </x-tr>
        <x-tr>
            <x-td>
                <span>row 3</span>
            </x-td>
            <x-td>
                <span style="height:50px"></span>
            </x-td>
        </x-tr>
      </x-tbody>
    </x-table>

</main>

<script>
    tests = [
    [
        document.getElementById('two').offsetHeight,
        document.getElementById('one').offsetHeight,
        "col visibility:collapse doesn't change table height"
    ],
    [
        document.getElementById('two').offsetWidth,
        10,
        "col visibility:collapse changes table width"
    ]];
    for (i = 0; i< tests.length; i++) {
        test(function()
            {
                assert_equals.apply(this, tests[i]);
            },
            tests[i][2]);
    };
</script>
</html>