2d.gradient.interpolate.zerosize.stroke.worker.js

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.zerosize.stroke.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.gradient.interpolate.zerosize.stroke

// Description:

// Note:

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

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

var t = async_test("");

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 = '#0f0';

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

  var g = ctx.createLinearGradient(50, 25, 50, 25); // zero-length line (undefined direction)

  g.addColorStop(0, '#f00');

  g.addColorStop(1, '#f00');

  ctx.strokeStyle = g;

  ctx.rect(20, 20, 60, 10);

  ctx.stroke();

  _assertPixel(canvas, 19,19, 0,255,0,255);

  _assertPixel(canvas, 20,19, 0,255,0,255);

  _assertPixel(canvas, 21,19, 0,255,0,255);

  _assertPixel(canvas, 19,20, 0,255,0,255);

  _assertPixel(canvas, 20,20, 0,255,0,255);

  _assertPixel(canvas, 21,20, 0,255,0,255);

  _assertPixel(canvas, 19,21, 0,255,0,255);

  _assertPixel(canvas, 20,21, 0,255,0,255);

  _assertPixel(canvas, 21,21, 0,255,0,255);

  t.done();

});

done();