third_party/WebKit/LayoutTests/fast/canvas/zero-size-fill-rect.html

   1 <!--
   2   Creates a canvas which is filled red, then attempts to
   3   fill a number of 0 size rects, finally fills with green.
   4
   5   Fill of a 0-sized rect should not throw an exception, so
   6   we expected the output to be a green rect.
   7 -->
   8 <html>
   9 <head>
  10 <script type="text/javascript">
  11 window.onload = function() {
  12     if (window.testRunner)
  13         testRunner.dumpAsText();
  14     var canvas = document.getElementById("test");
  15     var context = canvas.getContext("2d");
  16     context.fillStyle = '#f00';
  17     context.fillRect(0, 0, canvas.width, canvas.height);
  18     try {
  19         context.fillRect(0, 0, 0, 0);
  20         context.fillRect(0, 0, canvas.width, 0);
  21         context.fillRect(0, 0, 0, canvas.height);
  22     } catch (e) {
  23         var node = document.createTextNode("FAIL -- an exception was thrown when drawing a 0 sized rect");
  24         document.getElementById("body").appendChild(node);
  25         return;
  26     }
  27     context.fillStyle = '#0f0';
  28     context.fillRect(0, 0, canvas.width, canvas.height);
  29     var node = document.createTextNode("PASS -- 0 sized rects did not trigger an exception");
  30     document.getElementById("body").appendChild(node);
  31 }
  32 </script>
  33 <title>borkedness</title>
  34 </head>
  35 <body id="body">
  36 <canvas id="test" width="100" height="100"></canvas>
  37 <br>
  38 </body>
  39 </html>