<!DOCTYPE html>
<html>
<head>
<title>Parse, store, and serialize CSS variable referencing another CSS variable</title>
<meta rel="author" title="Kevin Babbitt">
<meta rel="author" title="Greg Whitworth">
<link rel="author" title="Microsoft Corporation" href="http://microsoft.com" />
<link rel="help" href="http://www.w3.org/TR/css-variables-1/#serializing-custom-props">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="test1" style="--prop1: var(--prop2);"></div>
<div id="test2" style="--prop1: var(--prop2, var(--prop3));"></div>
<script type="text/javascript">
"use strict";
var testcases = [
{ elementId: "test1", expectedPropertyValue: "var(--prop2)" },
{ elementId: "test2", expectedPropertyValue: "var(--prop2, var(--prop3))" },
];
testcases.forEach(function (testcase) {
test( function () {
var testElement = document.getElementById(testcase.elementId);
var actualPropertyValue = testElement.style.getPropertyValue("--prop1").trim();
assert_equals(actualPropertyValue, testcase.expectedPropertyValue);
}, testcase.cssText);
});
</script>
</body>
</html>