2d.line.join.parallel.worker.js

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

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

// OffscreenCanvas test in a worker:2d.line.join.parallel

// Description:Line joins are drawn at 180-degree joins

// Note:

importScripts("/resources/testharness.js");

importScripts("/html/canvas/resources/canvas-tests.js");

var t = async_test("Line joins are drawn at 180-degree joins");

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.fillStyle = '#f00';

  ctx.fillRect(0, 0, 100, 50);

  ctx.strokeStyle = '#0f0';

  ctx.lineWidth = 300;

  ctx.lineJoin = 'round';

  ctx.beginPath();

  ctx.moveTo(-100, 25);

  ctx.lineTo(0, 25);

  ctx.lineTo(-100, 25);

  ctx.stroke();

  _assertPixel(canvas, 1,1, 0,255,0,255);

  _assertPixel(canvas, 48,1, 0,255,0,255);

  _assertPixel(canvas, 48,48, 0,255,0,255);

  _assertPixel(canvas, 1,48, 0,255,0,255);

  t.done();

});

done();