position-sticky-parsing.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-position/sticky/position-sticky-parsing.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Position value 'sticky' should be a valid value</title>

<link rel="help" href="https://www.w3.org/TR/css-position-3/#position-property" />

<meta name="assert" content="This test checks that setting position to 'sticky'

should be allowed." />

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<!-- We need something to create elements in. -->

<body></body>

<script>

const displayTypes = [

  'block',

  'inline',

  'run-in',

  'flow',

  'flow-root',

  'table',

  'flex',

  'grid',

  'ruby',

  'subgrid',

  'list-item',

  'table-row-group',

  'table-header-group',

  'table-footer-group',

  'table-row',

  'table-cell',

  'table-caption',

  // Sticky does not apply to table-column or table-column-group, but the

  // computed value should still be sticky.

  'table-column',

  'table-column-group',

  'ruby-base',

  'ruby-text',

  'ruby-base-container',

  'ruby-text-container',

  'contents',

  'none',

];

test(() => {

  for (displayValue of displayTypes) {

    let div = document.createElement('div');

    let style = `position: sticky; display: ${displayValue};`;

    div.setAttribute('style', style);

    document.body.appendChild(div);

    // We only check display values that the browser under test recognizes.

    if (div.style.display == displayValue) {

      assert_equals(getComputedStyle(div).position, 'sticky',

          `Expected sticky to be valid for display: ${displayValue}`);

    document.body.removeChild(div);

}, 'The value of sticky for the position property should be parsed correctly');

</script>