content/canvas/test/test_2d.path.rect.nonfinite.html

   1 <!DOCTYPE HTML>
   2 <title>Canvas test: 2d.path.rect.nonfinite</title>
   3 <!-- Testing: rect() with Infinity/NaN is ignored -->
   4 <script src="/MochiKit/MochiKit.js"></script>
   5 <script src="/tests/SimpleTest/SimpleTest.js"></script>
   6 <link rel="stylesheet" href="/tests/SimpleTest/test.css">
   7 <body>
   8 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
   9 <script>
  10 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  11     var pixel = ctx.getImageData(x, y, 1, 1);
  12     var pr = pixel.data[0],
  13         pg = pixel.data[1],
  14         pb = pixel.data[2],
  15         pa = pixel.data[3];
  16     ok(r-d <= pr && pr <= r+d &&
  17        g-d <= pg && pg <= g+d &&
  18        b-d <= pb && pb <= b+d &&
  19        a-d <= pa && pa <= a+d,
  20        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  21 }
  22
  23 SimpleTest.waitForExplicitFinish();
  24 MochiKit.DOM.addLoadEvent(function () {
  25
  26 var canvas = document.getElementById('c');
  27 var ctx = canvas.getContext('2d');
  28
  29 var _thrown_outer = false;
  30 try {
  31
  32 ctx.moveTo(0, 0);
  33 ctx.lineTo(100, 0);
  34 ctx.rect(Infinity, 50, 1, 1);
  35 ctx.rect(-Infinity, 50, 1, 1);
  36 ctx.rect(NaN, 50, 1, 1);
  37 ctx.rect(0, Infinity, 1, 1);
  38 ctx.rect(0, -Infinity, 1, 1);
  39 ctx.rect(0, NaN, 1, 1);
  40 ctx.rect(0, 50, Infinity, 1);
  41 ctx.rect(0, 50, -Infinity, 1);
  42 ctx.rect(0, 50, NaN, 1);
  43 ctx.rect(0, 50, 1, Infinity);
  44 ctx.rect(0, 50, 1, -Infinity);
  45 ctx.rect(0, 50, 1, NaN);
  46 ctx.rect(Infinity, Infinity, 1, 1);
  47 ctx.rect(Infinity, Infinity, Infinity, 1);
  48 ctx.rect(Infinity, Infinity, Infinity, Infinity);
  49 ctx.rect(Infinity, Infinity, 1, Infinity);
  50 ctx.rect(Infinity, 50, Infinity, 1);
  51 ctx.rect(Infinity, 50, Infinity, Infinity);
  52 ctx.rect(Infinity, 50, 1, Infinity);
  53 ctx.rect(0, Infinity, Infinity, 1);
  54 ctx.rect(0, Infinity, Infinity, Infinity);
  55 ctx.rect(0, Infinity, 1, Infinity);
  56 ctx.rect(0, 50, Infinity, Infinity);
  57 ctx.lineTo(100, 50);
  58 ctx.lineTo(0, 50);
  59 ctx.fillStyle = '#0f0';
  60 ctx.fill();
  61 isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 0);
  62 isPixel(ctx, 90,45, 0,255,0,255, "90,45", "0,255,0,255", 0);
  63
  64 } catch (e) {
  65     _thrown_outer = true;
  66 }
  67 todo(!_thrown_outer, 'should not throw exception');
  68
  69 SimpleTest.finish();
  70
  71 });
  72 </script>
  73