testing/web-platform/tests/css/css-variables/variable-reference.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4     <title>Parse, store, and serialize CSS variable references</title>
   5
   6     <meta rel="author" title="Kevin Babbitt">
   7     <meta rel="author" title="Greg Whitworth">
   8     <link rel="author" title="Microsoft Corporation" href="http://microsoft.com" />
   9     <link rel="help" href="http://www.w3.org/TR/css-variables-1/#using-variables">
  10
  11     <script src="/resources/testharness.js"></script>
  12     <script src="/resources/testharnessreport.js"></script>
  13
  14     <!--
  15         https://drafts.csswg.org/css-syntax/#error-handling
  16         If the stylesheet ends while any rule, declaration, function, string, etc. are still open, everything is automatically closed.
  17     -->
  18     <style id="variable-reference-left-open">
  19         div
  20         {
  21             width: var(--prop</style>
  22 </head>
  23 <body>
  24
  25 <script type="text/javascript">
  26     "use strict";
  27
  28     var testcases = [
  29         { cssText: "width: var(--prop);",                   expectedPropertyValue: "var(--prop)" },
  30         { cssText: "width: var(--prop) !important;",        expectedPropertyValue: "var(--prop)" },
  31         { cssText: "width: var(--prop, );",                 expectedPropertyValue: "var(--prop, )" },
  32         { cssText: "width: var(--prop, 20px);",             expectedPropertyValue: "var(--prop, 20px)" },
  33         { cssText: "width: var(--prop, blue);",             expectedPropertyValue: "var(--prop, blue)" },
  34         { cssText: "width: var(--prop1, var(--prop2));",    expectedPropertyValue: "var(--prop1, var(--prop2))" },
  35         { cssText: "width: var(--prop1, var(--prop2, var(--prop3, auto)));", expectedPropertyValue: "var(--prop1, var(--prop2, var(--prop3, auto)))" },
  36         { cssText: "width: var(--prop1) var(--prop2)",      expectedPropertyValue: "var(--prop1) var(--prop2)" },
  37
  38         { cssText: "width: var();",                         expectedPropertyValue: "" },
  39         { cssText: "width: var(prop);",                     expectedPropertyValue: "" },
  40         { cssText: "width: var(-prop);",                    expectedPropertyValue: "" },
  41         { cssText: "width: var(--prop,);",                  expectedPropertyValue: "" },
  42         { cssText: "width: var(--prop 20px);",              expectedPropertyValue: "" },
  43         { cssText: "width: var(--prop, var(prop));",        expectedPropertyValue: "" },
  44         { cssText: "width: var(--prop, var(-prop));",       expectedPropertyValue: "" },
  45         { cssText: "width: var(20px);",                     expectedPropertyValue: "" },
  46         { cssText: "width: var(var(--prop));",              expectedPropertyValue: "" },
  47     ];
  48
  49     testcases.forEach(function (testcase) {
  50         test( function () {
  51             var div = document.createElement("div");
  52             document.body.appendChild(div);
  53             div.style.cssText = testcase.cssText;
  54             var actualPropertyValue = div.style.getPropertyValue("width").trim();
  55             assert_equals(actualPropertyValue, testcase.expectedPropertyValue);
  56             document.body.removeChild(div);
  57         }, testcase.cssText);
  58     });
  59
  60     test( function() {
  61             var actualPropertyValue = document.getElementById("variable-reference-left-open").sheet.cssRules[0].style.getPropertyValue("width").trim();
  62             assert_equals(actualPropertyValue, "var(--prop");
  63         }, "Variable reference left open at end of stylesheet");
  64 </script>
  65
  66 </body>
  67 </html>