testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.interpolate.overlap.html

   1 <!DOCTYPE html>
   2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
   3 <title>Canvas test: 2d.gradient.interpolate.overlap</title>
   4 <script src="/resources/testharness.js"></script>
   5 <script src="/resources/testharnessreport.js"></script>
   6 <script src="/html/canvas/resources/canvas-tests.js"></script>
   7 <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
   8 <body class="show_output">
   9
  10 <h1>2d.gradient.interpolate.overlap</h1>
  11 <p class="desc"></p>
  12
  13
  14 <p class="output">Actual output:</p>
  15 <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
  16 <p class="output expectedtext">Expected output:<p><img src="2d.gradient.interpolate.overlap.png" class="output expected" id="expected" alt="">
  17 <ul id="d"></ul>
  18 <script>
  19 var t = async_test("");
  20 _addTest(function(canvas, ctx) {
  21
  22 canvas.width = 200;
  23 var g = ctx.createLinearGradient(0, 0, 200, 0);
  24 g.addColorStop(0, '#f00');
  25 g.addColorStop(0, '#ff0');
  26 g.addColorStop(0.25, '#00f');
  27 g.addColorStop(0.25, '#0f0');
  28 g.addColorStop(0.25, '#0f0');
  29 g.addColorStop(0.25, '#0f0');
  30 g.addColorStop(0.25, '#ff0');
  31 g.addColorStop(0.5, '#00f');
  32 g.addColorStop(0.5, '#0f0');
  33 g.addColorStop(0.75, '#00f');
  34 g.addColorStop(0.75, '#f00');
  35 g.addColorStop(0.75, '#ff0');
  36 g.addColorStop(0.5, '#0f0');
  37 g.addColorStop(0.5, '#0f0');
  38 g.addColorStop(0.5, '#ff0');
  39 g.addColorStop(1, '#00f');
  40 ctx.fillStyle = g;
  41 ctx.fillRect(0, 0, 200, 50);
  42 _assertPixelApprox(canvas, 49,25, 0,0,255,255, 16);
  43 _assertPixelApprox(canvas, 51,25, 255,255,0,255, 16);
  44 _assertPixelApprox(canvas, 99,25, 0,0,255,255, 16);
  45 _assertPixelApprox(canvas, 101,25, 255,255,0,255, 16);
  46 _assertPixelApprox(canvas, 149,25, 0,0,255,255, 16);
  47 _assertPixelApprox(canvas, 151,25, 255,255,0,255, 16);
  48
  49
  50 });
  51 </script>
  52