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2d.layer.invalid-calls.beginLayer-restore.html (1017B)

      1 <!DOCTYPE html>
      2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
      3 <meta charset="UTF-8">
      4 <title>Canvas test: 2d.layer.invalid-calls.beginLayer-restore</title>
      5 <script src="/resources/testharness.js"></script>
      6 <script src="/resources/testharnessreport.js"></script>
      7 <script src="/html/canvas/resources/canvas-tests.js"></script>
      8 <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
      9 <body class="show_output">
     10 
     11 <h1>2d.layer.invalid-calls.beginLayer-restore</h1>
     12 <p class="desc">Raises exception on beginLayer() + restore().</p>
     13 
     14 
     15 <p class="output">Actual output:</p>
     16 <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
     17 
     18 <ul id="d"></ul>
     19 <script>
     20 test(t => {
     21  var canvas = document.getElementById('c');
     22  var ctx = canvas.getContext('2d');
     23 
     24  assert_throws_dom("INVALID_STATE_ERR", function() {
     25    ctx.beginLayer();
     26    ctx.restore();
     27  });
     28 
     29 }, "Raises exception on beginLayer() + restore().");
     30 </script>