test_bug727834.xhtml

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<?xml version="1.0"?>

<!--

vim: set ts=2 et sw=2 tw=80:

Any copyright is dedicated to the Public Domain.

http://creativecommons.org/publicdomain/zero/1.0/

-->

<?xml-stylesheet type="text/css" href="chrome://global/skin"?>

<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>

<?xml-stylesheet type="text/css" href="test_bug727834.css"?>

<window title="Mozilla Bug 727834"

        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"

        onload="RunTests();">

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>

  <script type="application/javascript"><![CDATA[

/** Test for Bug 727834 - Add an API to (re)parse a style sheet in place */

function RunTests() {

  SimpleTest.waitForExplicitFinish();

  let body = document.querySelector("body");

  let testSheet = document.styleSheets[2];

  let rule = document.styleSheets[2].cssRules[0];

  is(testSheet.cssRules.length, 1,

     "style sheet has 1 rule");

  is(rule.style.paddingTop, "100px",

     "original first rule has padding-top 100px");

  is(window.getComputedStyle(body).paddingTop, "100px",

     "original first rule applies");

  InspectorUtils.parseStyleSheet(testSheet,

    "@import url(test_bug727834.css); body{background: red;}");

  is(testSheet.cssRules.length, 2,

     "style sheet now has 2 rules");

  is(window.getComputedStyle(body).backgroundColor, "rgb(255, 0, 0)",

     "background is now red");

  let exceptionName;

  try {

    rule.style.paddingLeft = "100px";

  } catch (ex) {

    exceptionName = ex.name;

  } finally {

    is(exceptionName, "NS_ERROR_NOT_AVAILABLE",

       "original rule is not available for modification anymore");

  is(window.getComputedStyle(body).paddingLeft, "0px",

     "original rule does not apply to document");

  rule = testSheet.cssRules[0];

  is(rule.parentStyleSheet, testSheet,

     "rule's parent style sheet is not null");

  InspectorUtils.parseStyleSheet(testSheet,

    "body{background: lime;}");

  is(testSheet.cssRules.length, 1,

     "style sheet now has 1 rule");

  is(window.getComputedStyle(body).backgroundColor, "rgb(0, 255, 0)",

     "background is now lime");

  is(rule.parentStyleSheet, null,

     "detached rule's parent style sheet is null");

  SimpleTest.executeSoon(function () {

    InspectorUtils.parseStyleSheet(testSheet,

      "@import url(test_bug727834.css); body{background: blue;}");

    is(testSheet.cssRules.length, 2,

       "style sheet now has 2 rules");

    is(window.getComputedStyle(body).backgroundColor, "rgb(0, 0, 255)",

       "background is now blue");

    is(testSheet.cssRules[0].parentStyleSheet, testSheet,

       "parent style sheet is the test sheet");

    SimpleTest.finish();

});

  ]]></script>

  <body xmlns="http://www.w3.org/1999/xhtml">

    <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=727834">

      Mozilla Bug 727834 - Add an API to (re)parse a style sheet in place

    </a>

  </body>

</window>