<!DOCTYPE HTML>
<html>
<!--
Test that a image decoding error producs a net:failed-to-process-uri-content
observer event with the nsIURI of the failed image as the subject
-->
<head>
  <title>Test for image net:failed-to-process-uri-content</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<pre id="test">
</pre>
<script type="application/javascript">

SimpleTest.waitForExplicitFinish();

const Ci = SpecialPowers.Ci;
const Cc = SpecialPowers.Cc;
var obs = Cc["@mozilla.org/observer-service;1"].getService();
obs = obs.QueryInterface(Ci.nsIObserverService);

var observer = {
  /* eslint-disable-next-line mozilla/use-chromeutils-generateqi */
  QueryInterface (aIID) {
    if (aIID.equals(Ci.nsISupports) ||
        aIID.equals(Ci.nsIObserver))
      return this;
    throw Components.Exception("", Cr.NS_ERROR_NO_INTERFACE);
  },

  observe(subject, topic, data) {
    ok(topic == "net:failed-to-process-uri-content", "wrong topic");
    subject = subject.QueryInterface(Ci.nsIURI);
    is(subject.asciiSpec, `${location.origin}/tests/image/test/mochitest/invalid.jpg`, "wrong subject");

    obs.removeObserver(this, "net:failed-to-process-uri-content");

    SimpleTest.finish();
  }
};

obs.addObserver(SpecialPowers.wrapCallbackObject(observer), "net:failed-to-process-uri-content");

document.write('<img src="damon.jpg">');
document.write('<img src="invalid.jpg">');

</script>
</body>
</html>
