browser/base/content/test/test_bug452451.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=452451
   5 -->
   6 <head>
   7   <title>Test for Bug 452451</title>
   8   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  10 </head>
  11 <body>
  12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=452451">Mozilla Bug 452451</a>
  13 <p id="display"></p>
  14 <pre id="test">
  15 <script type="application/javascript">
  16
  17 /** Test for Bug 452451 **/
  18
  19   netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
  20   const prefs = Components.classes["@mozilla.org/preferences-service;1"]
  21                           .getService(Components.interfaces.nsIPrefBranch);
  22
  23   ok(prefs.getBoolPref("javascript.options.relimit"),
  24      "relimit should be enabled by default");
  25
  26   /**
  27    * Following tests are inspired from:
  28    * js/src/tests/js1_5/extensions/regress-330569.js
  29    */
  30
  31   var s;
  32   const expected = 'InternalError: regular expression too complex';
  33
  34   s = '<!DOCTYPE HTML PUBLIC>' +
  35       '<html>\n' +
  36       '<head>\n' +
  37       '<meta http-equiv="content-type" content="text/html">\n' +
  38       '<title></title>\n'+
  39       '</head>\n' +
  40       '<body>\n' +
  41       '<!-- hello -->\n' +
  42       '<script language="JavaScript">\n' +
  43       'var s = document. body. innerHTML;\n' +
  44       'var d = s. replace (/<!--(.*|\n)*-->/, "");\n' +
  45       '<\/script>\n' +
  46       '<\/body>\n' +
  47       '<\/html>\n';
  48
  49   try {
  50     /<!--(.*|\n)*-->/.exec(s);
  51   }
  52   catch(ex) {
  53     actual = ex;
  54   }
  55
  56   is(actual, expected, "reg exp too complex error should have been thrown");
  57
  58   function testre( re, n )
  59   {
  60     var txt = '';
  61     for (var i= 0; i <= n; ++i) {
  62       txt += ',';
  63       re.test(txt);
  64     }
  65   }
  66
  67   try {
  68     testre( /(?:,*)*x/, 22 );
  69   }
  70   catch(ex) {
  71     actual = ex;
  72   }
  73
  74   is(actual, expected, "reg exp too complex error should have been thrown");
  75
  76   try {
  77     testre( /(?:,|,)*x/, 22 );
  78   }
  79   catch(ex) {
  80     actual = ex;
  81   }
  82
  83   is(actual, expected, "reg exp too complex error should have been thrown");
  84
  85   try {
  86     testre( /(?:,|,|,|,|,)*x/, 10 );
  87   }
  88   catch(ex) {
  89     actual = ex;
  90   }
  91
  92   is(actual, expected, "reg exp too complex error should have been thrown");
  93 </script>
  94 </pre>
  95 </body>
  96 </html>