dom/bindings/test/test_bug742191.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=742191
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for invalid argument object</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11 </head>
  12 <body>
  13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=742191">Mozilla Bug 742191</a>
  14 <p id="display"></p>
  15 <pre id="test">
  16 <script type="application/javascript">
  17
  18 /** Test for Bug 742191 **/
  19 function doTest() {
  20   var gotTypeError = false;
  21   var ctx = document.createElement("canvas").getContext("2d");
  22   try {
  23     ctx.drawImage({}, 0, 0);
  24   } catch (e) {
  25     if (e instanceof TypeError) {
  26       gotTypeError = true;
  27     }
  28   }
  29
  30   ok(gotTypeError, "passing an invalid argument should cause a type error!");
  31 }
  32 doTest();
  33 </script>
  34 </pre>
  35 </body>
  36 </html>