Commit 4a6146ad authored by Bobby Holley's avatar Bobby Holley
Browse files

Bug 743615 - Tests. r=bent, a=blassey

parent 9aeabfb0

dom/tests/mochitest/bugs/Makefile.in

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@@ -157,6 +157,9 @@ _TEST_FILES = \ 
		test_bug735237.html \

		test_bug739038.html \

		test_bug740811.html \

		test_bug743615.html \

		utils_bug743615.js \

		worker_bug743615.js \

		$(NULL)



libs:: 	$(_TEST_FILES)

dom/tests/mochitest/bugs/test_bug743615.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=743615

-->

<head>

  <meta charset="utf-8">

  <title>Test for Bug 743615</title>

  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

  <script type="application/javascript" src="utils_bug743615.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=743615">Mozilla Bug 743615</a>

<p id="display"></p>

<div id="content" style="display: none">

<canvas id="c" width="200" height="200"><canvas>

</div>

<pre id="test">

<script type="application/javascript">



/** Test for structured cloning ImageData. **/



SimpleTest.waitForExplicitFinish();

window.addEventListener('message', windowMessage);

startTest();



function startTest() {

  // Make an ImageData.

  var ctx = document.getElementById('c').getContext('2d');

  ctx.fillStyle = 'rgb(';

  ctx.fillRect(30, 30, 50, 50);



  // Make a blank ImageData.

  var imageData = ctx.createImageData(200, 200);

  is(imageData.data.length, imageData.width * imageData.height * 4,

   'right size for data');



  // Write some things into it.

  var pattern = makePattern(imageData.data.length, 42, 7);

  setPattern(imageData, pattern);

  ok(checkPattern(imageData, pattern), 'Can read it back before sending');



  // PostMessage it to ourselves.

  window.postMessage({ imageData: imageData,

                       pattern: pattern,

                       dataRef: imageData.data }, '*');

}



function windowMessage(evt) {

  // Check the pattern we received.

  var imageData = evt.data.imageData;

  var pattern = evt.data.pattern;

  ok(checkPattern(imageData, pattern),

     'postMessage from self worked correctly');



  // We're not spec compliant on this yet.

  todo_is(imageData.data, evt.data.dataRef,

          'Should have backrefs for imagedata buffer');



  // Make a new pattern, and send it to a worker.

  pattern = makePattern(imageData.data.length, 4, 3);

  setPattern(imageData, pattern);

  var worker = new Worker('worker_bug743615.js');

  worker.onmessage = workerMessage;

  worker.postMessage( {imageData: imageData, pattern: pattern });

}



function workerMessage(evt) {

  // Relay the results of the worker-side tests.

  is(evt.data.statusMessage, 'PASS', evt.data.statusMessage);



  // Test what the worker sent us.

  ok(checkPattern(evt.data.imageData, evt.data.pattern),

     'postMessage from worker worked correctly');



  // All done.

  SimpleTest.finish();

}



</script>

</pre>

</body>

</html>

dom/tests/mochitest/bugs/utils_bug743615.js

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function makePattern(len, start, inc) {

  var pattern = [];

  while(len) {

    pattern.push(start);

    start = (start + inc) % 256;

    --len;

  }

  return pattern;

}



function setPattern(imageData, pattern) {

  if (pattern.length != imageData.data.length)

    throw Error('Invalid pattern');

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

    imageData.data[i] = pattern[i];

}



function checkPattern(imageData, pattern) {

  if (pattern.length != imageData.data.length)

    throw Error('Invalid pattern');

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

    if (imageData.data[i] != pattern[i])

      return false;

  return true;

}

dom/tests/mochitest/bugs/worker_bug743615.js

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importScripts('utils_bug743615.js');



self.onmessage = function onMessage(evt) {

  // Check the pattern that was sent.

  var imageData = evt.data.imageData;

  var pattern = evt.data.pattern;

  var statusMessage = checkPattern(imageData, pattern)

                       ? 'PASS' : 'Got corrupt typed array in worker';



  // Check against the interface object.

  if (!(imageData instanceof ImageData))

    statusMessage += ", Bad interface object in worker";



  // Check the getters.

  if (imageData.width * imageData.height != imageData.data.length / 4) {

    statusMessage += ", Bad ImageData getters in worker: "

    statusMessage += [imageData.width, imageData.height].join(', ');

  }



  // Make sure that writing to .data is a no-op when not in strict mode.

  var origData = imageData.data;

  var threw = false;

  try {

    imageData.data = [];

    imageData.width = 2;

    imageData.height = 2;

  } catch(e) { threw = true; }

  if (threw || imageData.data !== origData)

    statusMessage = statusMessage + ", Should silently ignore sets";







  // Send back a new pattern.

  pattern = makePattern(imageData.data.length, 99, 2);

  setPattern(imageData, pattern);

  self.postMessage({ statusMessage: statusMessage, imageData: imageData,

                     pattern: pattern });

}