css/css-flexbox/flex-shorthand-calc.html

<!DOCTYPE html>
<title>CSS Flexbox Test: Allow complex calc expressions in flex shorthand</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-property">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/shorthand-testcommon.js"></script>
<div>
  <div id="target"></div>
</div>
<script>
  test_shorthand_value('flex', 'sign(1em - 1px) sibling-index()', {
    'flex-grow': 'sign(1em - 1px)',
    'flex-shrink': 'sibling-index()',
    'flex-basis': '0%'
  });
</script>