structured-clone-imagedata.html

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This WPT test may be referenced by the following Test IDs:
- /workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>structured clone of ImageData</title>

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

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

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

<script>

(async_test()).step(function() {

  var worker = new Worker('structured-clone-imagedata.js');

  var ctx = document.createElement('canvas').getContext('2d');

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

  worker.postMessage(imagedata);

  worker.onmessage = this.step_func(function(e) {

    assert_equals(''+e.data, '[object ImageData]');

    assert_equals(e.data.data[0], 128);

    this.done();

});

});

</script>