2d.line.invalid.strokestyle.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/line-styles/2d.line.invalid.strokestyle.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->

<meta charset="UTF-8">

<title>OffscreenCanvas test: 2d.line.invalid.strokestyle</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.line.invalid.strokestyle</h1>

<p class="desc">Verify correct behavior of canvas on an invalid strokeStyle()</p>

<script>

var t = async_test("Verify correct behavior of canvas on an invalid strokeStyle()");

var t_pass = t.done.bind(t);

var t_fail = t.step_func(function(reason) {

    throw reason;

});

t.step(function() {

  var canvas = new OffscreenCanvas(100, 50);

  var ctx = canvas.getContext('2d');

  ctx.strokeStyle = 'rgb(0, 255, 0)';

  ctx.strokeStyle = 'nonsense';

  ctx.lineWidth = 200;

  ctx.moveTo(0,100);

  ctx.lineTo(200,100);

  ctx.stroke();

  var imageData = ctx.getImageData(0, 0, 200, 200);

  var imgdata = imageData.data;

  _assert(imgdata[4] == 0, "imgdata[\""+(4)+"\"] == 0");

  _assert(imgdata[5] == 255, "imgdata[\""+(5)+"\"] == 255");

  _assert(imgdata[6] == 0, "imgdata[\""+(6)+"\"] == 0");

  t.done();

});

</script>