third_party/WebKit/LayoutTests/fast/canvas/webgl/webgl-context-attributes-default-value.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../../resources/js-test.js"></script>
   5 <script src="resources/webgl-test.js"></script>
   6 <script>
   7
   8   var defaultAttributes = {
   9     alpha : true,
  10     depth : true,
  11     stencil : false,
  12     // FIXME: context.getContextAttributes().antialias is always false on
  13     // content shell with --run-layout-test option. See http://crbug.com/375682
  14     // antialias : true,
  15     premultipliedAlpha : true,
  16     preserveDrawingBuffer : false,
  17     failIfMajorPerformanceCaveat : false,
  18   };
  19
  20   var falseAttributes = {
  21     alpha : false,
  22     depth : false,
  23     stencil : false,
  24     // FIXME: context.getContextAttributes().antialias is always false on
  25     // content shell with --run-layout-test option. See http://crbug.com/375682
  26     // antialias : true,
  27     premultipliedAlpha : false,
  28     preserveDrawingBuffer : false,
  29     failIfMajorPerformanceCaveat : false,
  30   };
  31
  32   function testAttributes(expectedAttributes, checkValue) {
  33
  34     if (arguments.length != 1 && arguments.length != 2)
  35       return;
  36
  37     var canvas = document.createElement("canvas");
  38     var initialAttributes = {};
  39     var isUndefinedOrNull = arguments.length == 2 &&
  40         (checkValue == undefined || checkValue == null);
  41
  42     if (isUndefinedOrNull)
  43       for (key in expectedAttributes)
  44         initialAttributes[key] = checkValue;
  45
  46     var context = create3DContext(canvas, initialAttributes);
  47
  48     window.actualContextAttributes = context.getContextAttributes();
  49
  50     for (key in expectedAttributes)
  51       shouldBe("actualContextAttributes." + key,
  52           expectedAttributes[key].toString());
  53   }
  54
  55 </script>
  56 </head>
  57 <body>
  58 <script>
  59
  60   debug("Testing default value:");
  61   testAttributes(defaultAttributes);
  62   debug("")
  63
  64   debug("Testing undefined value:");
  65   testAttributes(defaultAttributes, undefined);
  66   debug("")
  67
  68   debug("Testing null value:");
  69   testAttributes(falseAttributes, null);
  70   debug("")
  71
  72 </script>
  73 </body>