third_party/WebKit/LayoutTests/fast/canvas/webgl/webgl-drawing-buffer-error-response.html

   1 <!-- This is a test to ensure that drawing buffer creation failure gracefully fails WebGL context creation -->
   2 <script src="../../../resources/js-test.js"></script>
   3 <canvas id="webgl-canvas" width="200" height="200" class="nomargin"></canvas>
   4 <script>
   5 function main()
   6 {
   7   if (!window.testRunner) {
   8     testFailed("Requires window.testRunner");
   9   } else {
  10     initTest();
  11   }
  12 }
  13
  14 function initTest() {
  15   var canvas = document.getElementById("webgl-canvas");
  16   testRunner.forceNextDrawingBufferCreationToFail();
  17   canvas.addEventListener("webglcontextcreationerror", onContextCreationError, false);
  18   var gl = canvas.getContext("webgl");
  19   testRunner.dumpAsText();
  20 }
  21
  22 function onContextCreationError(e) {
  23   var splitStatus = e.statusMessage.split(",");
  24   var stringLocator = 1;
  25   var status = true;
  26   // Start iterating from 1 as , the initial message has no data.
  27   for (var i = 1; i < splitStatus.length; i++) {
  28     var gpuInfoStr = splitStatus[i].split(" = ");
  29     if (gpuInfoStr[stringLocator] == "")
  30       status = false;
  31   }
  32   if(status)
  33     testPassed("Status message displayed for webglcontextcreationerror");
  34   else
  35     testFailed("Context creation error test failed");
  36 }
  37 main();
  38 </script>