dom/canvas/test/test_bug1215072.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=1215072
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 1215072</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11   <script type="application/javascript">
  12
  13   /** Test for Bug 1215072 **/
  14   try {
  15     var gl = document.createElement("canvas")
  16                      .getContext("webgl", { get stencil() { throw "bah (webgl)"; } });
  17     ok(!gl, "Either should have thrown or not create a webgl context!");
  18   } catch(ex) {
  19     is(ex, "bah (webgl)", "Should have thrown an exception.");
  20   }
  21
  22   try {
  23     var c = document.createElement("canvas")
  24                     .getContext("2d", { get alpha() {throw "bah (2d)"; } });
  25     ok(!c, "Either should have thrown or not create a 2d context!");
  26   } catch(ex) {
  27     is(ex, "bah (2d)", "Should have thrown an exception.");
  28   }
  29
  30   var gl2;
  31   try {
  32     gl2 = document.createElement("canvas").getContext("webgl", false);
  33     gl2 = document.createElement("canvas").getContext("webgl", 123);
  34     gl2 = document.createElement("canvas").getContext("webgl", "");
  35     gl2 = document.createElement("canvas").getContext("webgl", undefined);
  36     gl2 = document.createElement("canvas").getContext("webgl", null);
  37     ok(true, "Shouldn't have thrown an exception!");
  38   } catch(ex) {
  39     ok(false, "Shouldn't have thrown an exception " + ex);
  40   }
  41
  42   var c2;
  43   try {
  44     c2 = document.createElement("canvas").getContext("2d", false);
  45     is(c2.getImageData(1, 1, 1, 1).data[0], 0);
  46     is(c2.getImageData(1, 1, 1, 1).data[1], 0);
  47     is(c2.getImageData(1, 1, 1, 1).data[2], 0);
  48     is(c2.getImageData(1, 1, 1, 1).data[3], 0);
  49
  50     c2 = document.createElement("canvas").getContext("2d", 123);
  51     c2 = document.createElement("canvas").getContext("2d", "");
  52     c2 = document.createElement("canvas").getContext("2d", undefined);
  53     c2 = document.createElement("canvas").getContext("2d", null);
  54     ok(true, "Shouldn't have thrown an exception!");
  55
  56     c2 = document.createElement("canvas").getContext("2d", { alpha: false });
  57     is(c2.getImageData(1, 1, 1, 1).data[0], 0);
  58     is(c2.getImageData(1, 1, 1, 1).data[1], 0);
  59     is(c2.getImageData(1, 1, 1, 1).data[2], 0);
  60     is(c2.getImageData(1, 1, 1, 1).data[3], 255);
  61   } catch(ex) {
  62     ok(false, "Shouldn't have thrown an exception " + ex);
  63   }
  64
  65   </script>
  66 </head>
  67 <body>
  68 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1215072">Mozilla Bug 1215072</a>
  69 <p id="display"></p>
  70 <div id="content" style="display: none">
  71
  72 </div>
  73 <pre id="test">
  74 </pre>
  75 </body>
  76 </html>