<!DOCTYPE html>
<html>
<head>
<title>Parse, store, and serialize CSS variable references</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/#using-variables">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
https://drafts.csswg.org/css-syntax/#error-handling
If the stylesheet ends while any rule, declaration, function, string, etc. are still open, everything is automatically closed.
-->
<style id="variable-reference-left-open">
div
{
width: var(--prop</style>
</head>
<body>
<script type="text/javascript">
"use strict";
var testcases = [
{ cssText: "width: var(--prop);", expectedPropertyValue: "var(--prop)" },
{ cssText: "width: var(--prop) !important;", expectedPropertyValue: "var(--prop)" },
{ cssText: "width: var(--prop, );", expectedPropertyValue: "var(--prop, )" },
{ cssText: "width: var(--prop, 20px);", expectedPropertyValue: "var(--prop, 20px)" },
{ cssText: "width: var(--prop, blue);", expectedPropertyValue: "var(--prop, blue)" },
{ cssText: "width: var(--prop1, var(--prop2));", expectedPropertyValue: "var(--prop1, var(--prop2))" },
{ cssText: "width: var(--prop1, var(--prop2, var(--prop3, auto)));", expectedPropertyValue: "var(--prop1, var(--prop2, var(--prop3, auto)))" },
{ cssText: "width: var(--prop1) var(--prop2)", expectedPropertyValue: "var(--prop1) var(--prop2)" },
{ cssText: "width: var(--prop,);", expectedPropertyValue: "var(--prop,)" },
{ cssText: "width: var();", expectedPropertyValue: "" },
{ cssText: "width: var(prop);", expectedPropertyValue: "" },
{ cssText: "width: var(-prop);", expectedPropertyValue: "" },
{ cssText: "width: var(--prop 20px);", expectedPropertyValue: "" },
{ cssText: "width: var(--prop, var(prop));", expectedPropertyValue: "" },
{ cssText: "width: var(--prop, var(-prop));", expectedPropertyValue: "" },
{ cssText: "width: var(20px);", expectedPropertyValue: "" },
{ cssText: "width: var(var(--prop));", expectedPropertyValue: "" },
];
testcases.forEach(function (testcase) {
test( function () {
var div = document.createElement("div");
document.body.appendChild(div);
div.style.cssText = testcase.cssText;
var actualPropertyValue = div.style.getPropertyValue("width").trim();
assert_equals(actualPropertyValue, testcase.expectedPropertyValue);
document.body.removeChild(div);
}, testcase.cssText);
});
test( function() {
var actualPropertyValue = document.getElementById("variable-reference-left-open").sheet.cssRules[0].style.getPropertyValue("width").trim();
assert_equals(actualPropertyValue, "var(--prop");
}, "Variable reference left open at end of stylesheet");
</script>
</body>
</html>