test_parsingMode.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>CSSStyleSheet parsingMode test - bug 1230491</title>

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

  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">

<script type="application/javascript">

  SimpleTest.waitForExplicitFinish();

  function sheetText(sheet) {

    return [...sheet.cssRules].map(r => r.cssText).join();

  function run() {

    const sss = Cc["@mozilla.org/content/style-sheet-service;1"]

      .getService(Ci.nsIStyleSheetService);

    const utils = window.windowUtils;

    const userUrl = encodeURI("data:text/css,body { color: seagreen; -moz-window-transform: none }");

    utils.loadSheetUsingURIString(userUrl, sss.USER_SHEET);

    const agentUrl = encodeURI("data:text/css,body { color: tomato; }");

    utils.loadSheetUsingURIString(agentUrl, sss.AGENT_SHEET);

    const authorUrl = "chrome://mochikit/content/tests/SimpleTest/test.css";

    let results = [];

    for (let sheet of InspectorUtils.getAllStyleSheets(document)) {

      if (sheet.href === agentUrl) {

        is(sheet.parsingMode, "agent", "agent sheet has expected mode");

        results[sss.AGENT_SHEET] = 1;

      } else if (sheet.href === userUrl) {

        is(sheet.parsingMode, "user", "user sheet has expected mode");

        is(sheet.cssRules[0].style.length, 2, "Chrome-only properties are parsed in user sheet")

        results[sss.USER_SHEET] = 1;

      } else if (sheet.href === authorUrl) {

        is(sheet.parsingMode, "author", "author sheet has expected mode");

        results[sss.AUTHOR_SHEET] = 1;

      } else {

        // Ignore sheets we don't care about.

        continue;

      // Check that re-parsing preserves the mode.

      let mode = sheet.parsingMode;

      let text = sheetText(sheet);

      InspectorUtils.parseStyleSheet(sheet, "body { color: chartreuse; }");

      if (mode == "agent") {

        is(sheetText(sheet), text,

           "Reparsing should not have changed a UA sheet");

      } else {

        isnot(sheetText(sheet), text,

           "Reparsing should have changed a non-UA sheet");

      is(sheet.parsingMode, mode,

         "check that re-parsing preserved mode " + mode);

    ok(results[sss.AGENT_SHEET] && results[sss.USER_SHEET] &&

      results[sss.AUTHOR_SHEET],

      "all sheets seen");

    SimpleTest.finish();

</script>

</head>

<body onload="run()">

  <div> What? </div>

</body>

</html>