dom/bindings/test/test_sequence_wrapping.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=775852
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 775852</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=775852">Mozilla Bug 775852</a>
  14 <p id="display"></p>
  15 <iframe id="content" style="display: none">
  16 </iframe>
  17 <pre id="test">
  18 <script type="application/javascript">
  19
  20 /** Test for Bug 775852 **/
  21 function doTest() {
  22   let win = document.getElementById("content").contentWindow;
  23   let doc = win.document;
  24   doc.body.innerHTML = `<canvas width="1" height="1" id="c"></canvas>`;
  25
  26   let gl = doc.getElementById("c").getContext("experimental-webgl");
  27   if (!gl) {
  28     // No WebGL support on MacOS 10.5.  Just skip this test
  29     todo(false, "WebGL not supported");
  30     return;
  31   }
  32   var setterCalled = false;
  33
  34   var extLength = gl.getSupportedExtensions().length;
  35   ok(extLength > 0,
  36      "This test won't work right if we have no supported extensions");
  37
  38   win.Object.defineProperty(win.Array.prototype, "0",
  39     {
  40       set() {
  41              setterCalled = true;
  42            },
  43     });
  44
  45   // Test that our property got defined correctly
  46   let arr = new win.Array();
  47   arr[0] = 5;
  48   is(setterCalled, true, "Setter should be called when setting prop on array");
  49
  50   setterCalled = false;
  51
  52   is(gl.getSupportedExtensions().length, extLength,
  53      "We should still have the same number of extensions");
  54
  55   is(setterCalled, false,
  56      "Setter should not be called when getting supported extensions");
  57 }
  58 doTest();
  59 </script>
  60 </pre>
  61 </body>
  62 </html>