File: var-reference-registered-properties-002.html

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<!DOCTYPE HTML>
<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api/#dom-css-registerproperty" />
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1899272">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=element></div>
<script>
test(function() {
  CSS.registerProperty({
    name: '--length-calc',
    syntax: '<length>',
    initialValue: '0px',
    inherits: true
  });
  CSS.registerProperty({
    name: '--length-calc-reset',
    syntax: '<length>',
    initialValue: '0px',
    inherits: false
  });
  let element = document.getElementById("element");
  element.style = 'font-size: 11px; --length-calc: calc(10em + 10px); --unregistered:var(--length-calc-reset); --length-calc-reset: var(--length-calc)';
  let cs = getComputedStyle(element);
  for (let prop of ["--length-calc", "--length-calc-reset", "--unregistered"]) {
    assert_equals(cs.getPropertyValue(prop), "120px", "Should resolve properly: " + prop);
  }
}, "Property dependency tracking across inherited and non-inherited properties");
</script>