011.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /webmessaging/with-ports/011.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>posting an imagedata (from a cloned canvas) in an array</title>

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

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

<div id="log"></div>

<script>

async_test(function() {

  var canvas = document.createElement('canvas');

  var clone = canvas.cloneNode(true);

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

  var imagedata = ctx.getImageData(0, 0, 300, 150);

  postMessage([imagedata], '*', []);

  onmessage = this.step_func(function(e) {

    function processPixels(imagedata) {

      var pixeldata = imagedata.data;

      for (var i = 0; i < pixeldata.length; i = i+4) {

        pixeldata[i] = 128;

        assert_equals(pixeldata[i], 128);

    processPixels(e.data[0]);

    this.done();

});

});

</script>