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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=685518
-->
<head>
  <title>Test for Bug 685518</title>
  <script src="/tests/SimpleTest/SimpleTest.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=685518">Mozilla Bug 685518</a>
<p id="display"></p>
<div id="content" style="display: none">
  
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<pre id="test">
<script type="application/javascript">

/** Test for Bug 685518 **/

SimpleTest.waitForExplicitFinish();

const BAD_URI_ERR = "NS_ERROR_DOM_BAD_URI_ERR";
const OK = "";

function verifyError(actual_error, expected_error, message) {
  ok(actual_error == expected_error,
     message + ": expected " + expected_error + ", got " + actual_error);
}

var number_of_tests_live = 0;

function testDone() {
  number_of_tests_live--;
        
  if (number_of_tests_live == 0)
    SimpleTest.finish();
}

function testImage(url, crossOriginAttribute, expected_error) {
  ++number_of_tests_live;
  var image;
  if (crossOriginAttribute == "just-crossOrigin-without-value") {
    var div = document.createElement('div');
    div.innerHTML="<img crossOrigin>";
    image = div.children[0];
  }
  else {
    image = new Image();
    if (crossOriginAttribute != "missing-value-default") {
      image.crossOrigin = crossOriginAttribute;
    }
  }

  image.onload = function() {
    var c = document.createElement("canvas");
    c.width = this.width;
    c.height = this.height;
    var ctx = c.getContext("2d");
    ctx.drawImage(this, 0, 0);

    var data;
    var actual_error;
    try {
      data = ctx.getImageData(0, 0, 1, 1);
      actual_error = OK;
    } catch (e) {
      actual_error = e.name;
    }

    verifyError(actual_error, expected_error,
                "drawImage then get image data on " + url +
                " with crossOrigin=" + this.crossOrigin);

    try {
      c.captureStream(0);
      actual_error = OK;
    } catch (e) {
      actual_error = e.name;
    }

    verifyError(actual_error, expected_error,
                "drawImage then capture stream on " + url +
                " with crossOrigin=" + this.crossOrigin);

    // Now test patterns
    c = document.createElement("canvas");
    c.width = this.width;
    c.height = this.height;
    ctx = c.getContext("2d");
    ctx.fillStyle = ctx.createPattern(this, "");
    ctx.fillRect(0, 0, c.width, c.height);
    try {
      data = ctx.getImageData(0, 0, 1, 1);
      actual_error = OK;
    } catch (e) {
      actual_error = e.name;
    }

    verifyError(actual_error, expected_error,
                "createPattern+fill then get image data on " + url +
                " with crossOrigin=" + this.crossOrigin);

    try {
      c.captureStream(0);
      actual_error = OK;
    } catch (e) {
      actual_error = e.name;
    }

    verifyError(actual_error, expected_error,
                "createPattern+fill then capture stream on " + url +
                " with crossOrigin=" + this.crossOrigin);

    testDone();
  };

  image.onerror = function(event) {
    verifyError(BAD_URI_ERR, expected_error,
                "image error handler for " + url +
                " with crossOrigin=" + this.crossOrigin);

    testDone();
  }

  image.src = url;
}

// Now kick off the tests.
const testPath = "/tests/dom/canvas/test/crossorigin/"

// First column is image file, second column is what CORS headers the server sends
const imageFiles = [
 [ "image.png", "none" ],
 [ "image-allow-star.png", "allow-all-anon" ],
 [ "image-allow-credentials.png", "allow-single-server-creds" ]
];

const hostnames = [
  [ "mochi.test:8888", "same-origin" ],
  [ "example.com", "cross-origin" ]
];

// First column is the value; second column is the expected resulting CORS mode
const attrValues = [
  [ "missing-value-default", "none" ],
  [ "", "anonymous" ],
  [ "just-crossOrigin-without-value", "anonymous" ],
  [ "anonymous", "anonymous" ],
  [ "use-credentials", "use-credentials" ],
  [ "foobar", "anonymous" ]
];

function beginTest() {
  for (var imgIdx = 0; imgIdx < imageFiles.length; ++imgIdx) {
    for (var hostnameIdx = 0; hostnameIdx < hostnames.length; ++hostnameIdx) {
      var hostnameData = hostnames[hostnameIdx];
      var url = "http://" + hostnameData[0] + testPath + imageFiles[imgIdx][0];
      for (var attrValIdx = 0; attrValIdx < attrValues.length; ++attrValIdx) {
        var attrValData = attrValues[attrValIdx];
        // Now compute the expected result
        var expected_error;
        if (hostnameData[1] == "same-origin") {
          // Same-origin; these should all Just Work
          expected_error = OK;
        } else {
          // Cross-origin
          is(hostnameData[1], "cross-origin",
             "what sort of host is " + hostnameData[0]);
          var CORSMode = attrValData[1];
          if (CORSMode == "none") {
            // Doesn't matter what headers the server sends; we're not
            // using CORS on our end.
            expected_error = "SecurityError";
          } else {
            // Check whether the server will let us talk to them
            var CORSHeaders = imageFiles[imgIdx][1];
            // We're going to look for CORS headers from the server
            if (CORSHeaders == "none") {
              // No CORS headers from server; load will fail.
              expected_error = BAD_URI_ERR;
            } else if (CORSHeaders == "allow-all-anon") {
              // Server only allows anonymous requests
              if (CORSMode == "anonymous") {
                expected_error = OK;
              } else {
                is(CORSMode, "use-credentials",
                   "What other CORS modes are there?");
                // A load with credentials against a server that only
                // allows anonymous loads will fail.
                expected_error = BAD_URI_ERR;
              }
            } else {
              is(CORSHeaders, "allow-single-server-creds",
                 "What other CORS headers could there be?");
              // Our server should allow both anonymous and non-anonymous requests
              expected_error = OK;
            }
          }
        }
        testImage(url, attrValData[0], expected_error);
      }
    }
  }
}

beginTest();
</script>
</pre>
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