File: unset-value-storage.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Storage of "unset" value</title>
<meta name="author" title="Xidorn Quan" href="https://www.upsuper.org">
<link rel="help" href="https://drafts.csswg.org/css-values-3/#common-keywords"/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  div {
    color: unset;
    border: unset;
  }
</style>
<body>
  <div id="log"></div>
  <script>
    test(function() {
      let properties = ["color", "border", "border-left", "border-color", "border-right-style"];
      let style = document.styleSheets[0].cssRules[0].style;
      for (let prop of properties) {
        assert_equals(style.getPropertyValue(prop), "unset", `${prop} is expected to be "unset"`);
      }
    });
  </script>