2d.imageData.get.invalid.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/pixel-manipulation/2d.imageData.get.invalid.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.imageData.get.invalid</title>

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

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

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

<h1>2d.imageData.get.invalid</h1>

<p class="desc">Verify getImageData() behavior in invalid cases.</p>

<script>

var t = async_test("Verify getImageData() behavior in invalid cases.");

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');

  imageData = ctx.getImageData(0,0,2,2);

  var testValues = [NaN, true, false, "\"garbage\"", "-1",

                    "0", "1", "2", Infinity, -Infinity,

                    -5, -0.5, 0, 0.5, 5,

                    5.4, 255, 256, null, undefined];

  var testResults = [0, 1, 0, 0, 0,

                     0, 1, 2, 255, 0,

                     0, 0, 0, 0, 5,

                     5, 255, 255, 0, 0];

  for (var i = 0; i < testValues.length; i++) {

      imageData.data[0] = testValues[i];

      _assert(imageData.data[0] == testResults[i], "imageData.data[\""+(0)+"\"] == testResults[\""+(i)+"\"]");

  imageData.data['foo']='garbage';

  _assert(imageData.data['foo'] == 'garbage', "imageData.data['foo'] == 'garbage'");

  imageData.data[-1]='garbage';

  _assert(imageData.data[-1] == undefined, "imageData.data[-1] == undefined");

  imageData.data[17]='garbage';

  _assert(imageData.data[17] == undefined, "imageData.data[\""+(17)+"\"] == undefined");

  t.done();

});

</script>