2d.filter.canvasFilterObject.colorMatrix.tentative.worker.js

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/filters/2d.filter.canvasFilterObject.colorMatrix.tentative.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.filter.canvasFilterObject.colorMatrix.tentative

// Description:Test the functionality of ColorMatrix filters

// Note:

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

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

var t = async_test("Test the functionality of ColorMatrix filters");

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');

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', values: undefined}); });

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', values: 'foo'}); });

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', values: null}); });

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', values: [1, 2, 3]}); });

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix',

     values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,

              19, 'a']}); });

  assert_throws_js(TypeError, function() { ctx.filter = new CanvasFilter(

    {name: 'colorMatrix',

     values: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,

              19, Infinity]}); });

  ctx.fillStyle = '#f00';

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'hueRotate', values: 0});

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

  _assertPixelApprox(canvas, 10,10, 255,0,0,255, 2);

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'hueRotate', values: 90});

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

  _assertPixelApprox(canvas, 10,10, 0,91,0,255, 2);

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'hueRotate', values: 180});

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

  _assertPixelApprox(canvas, 10,10, 0,109,109,255, 2);

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'hueRotate', values: 270});

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

  _assertPixelApprox(canvas, 10,10, 109,18,255,255, 2);

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'saturate', values: 0.5});

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

  _assertPixelApprox(canvas, 10,10, 155,27,27,255, 2);

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

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', type: 'luminanceToAlpha'});

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

  _assertPixelApprox(canvas, 10,10, 0,0,0,54, 2);

  ctx.filter = new CanvasFilter(

    {name: 'colorMatrix', values: [

      0, 0, 0, 0, 0,

      1, 1, 1, 1, 0,

      0, 0, 0, 0, 0,

      0, 0, 0, 1, 0

    ]});

  ctx.fillRect(0, 0, 50, 25);

  ctx.fillStyle = '#0f0';

  ctx.fillRect(50, 0, 50, 25);

  ctx.fillStyle = '#00f';

  ctx.fillRect(0, 25, 50, 25);

  ctx.fillStyle = '#fff';

  ctx.fillRect(50, 25, 50, 25);

  _assertPixelApprox(canvas, 10,10, 0,255,0,255, 2);

  _assertPixelApprox(canvas, 60,10, 0,255,0,255, 2);

  _assertPixelApprox(canvas, 10,30, 0,255,0,255, 2);

  _assertPixelApprox(canvas, 60,30, 0,255,0,255, 2);

  t.done();

});

done();