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+++ b/dom/base/test/test_bug1667316.html
@@ -0,0 +1,153 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1667316
+-->
+<head>
+  <title>Test for Bug 1667316</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=1667316">Mozilla Bug 1667316</a>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 1667316 **/
+
+function testPreloadEvent(url, crossorigin, expectLoad) {
+  return new Promise((resolve) => {
+    var link = document.createElement("LINK");
+    link.setAttribute("rel", "preload");
+    link.setAttribute("href", url);
+    link.setAttribute("as", "fetch");
+    if (crossorigin) {
+      link.setAttribute("crossorigin", "");
+    }
+
+    link.addEventListener("load", () => {
+      ok(expectLoad, "not expecting load event for " + url);
+      link.remove();
+      resolve();
+    });
+    link.addEventListener("error", () => {
+      ok(!expectLoad, "not expecting error event for " + url);
+      link.remove();
+      resolve();
+    });
+    document.head.appendChild(link);
+  });
+}
+
+function testChangePrefetchToPreload(url) {
+  return new Promise((resolve) => {
+    var preloaded = false;
+    var link = document.createElement("LINK");
+    link.setAttribute("rel", "prefetch");
+    link.setAttribute("href", url);
+    link.setAttribute("as", "fetch");
+
+    link.addEventListener("load", () => {
+      ok(preloaded, "this will happen only on a preload");
+      ok(true, "not expecting load event for " + url);
+      link.remove();
+      resolve();
+    });
+    link.addEventListener("error", () => {
+      ok(false, "not expecting error event for " + url);
+      link.remove();
+      resolve();
+    });
+    document.head.appendChild(link);
+    preloaded = true;
+    link.setAttribute("rel", "preload");
+  })
+};
+
+const SJS_PATH = window.location.pathname.replace(/[^/]+$/, "file_bug1268962.sjs");
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+const SAME_ORIGIN = "http://mochi.test:8888" + SJS_PATH;
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+const CROSS_ORIGIN = "http://example.com" + SJS_PATH;
+
+SimpleTest.waitForExplicitFinish();
+
+SpecialPowers.pushPrefEnv({"set": [["network.preload", true]]})
+
+
+.then(async () => {
+  await SpecialPowers.spawnChrome([], () => {
+
+let window = this.browsingContext.currentWindowGlobal;
+window.ChannelEventSink = {
+  _classDescription: "WebRequest channel event sink",
+  _classID: Components.ID("115062f8-92f1-11e5-8b7f-08001110f7ec"),
+  _contractID: "@mozilla.org/webrequest/channel-event-sink;1",
+
+  QueryInterface: ChromeUtils.generateQI(["nsIChannelEventSink", "nsIFactory"]),
+
+  init() {
+    Components.manager
+      .QueryInterface(Ci.nsIComponentRegistrar)
+      .registerFactory(
+        this._classID,
+        this._classDescription,
+        this._contractID,
+        this
+      );
+  },
+
+  register() {
+    Services.catMan.addCategoryEntry(
+      "net-channel-event-sinks",
+      this._contractID,
+      this._contractID,
+      false,
+      true
+    );
+  },
+
+  unregister() {
+    Components.manager
+      .QueryInterface(Ci.nsIComponentRegistrar)
+      .unregisterFactory(this._classID, window.ChannelEventSink);
+    Services.catMan.deleteCategoryEntry(
+      "net-channel-event-sinks",
+      this._contractID,
+      false
+    );
+  },
+
+  // nsIChannelEventSink implementation
+  asyncOnChannelRedirect(oldChannel, newChannel, flags, redirectCallback) {
+    // Abort the redirection.
+    redirectCallback.onRedirectVerifyCallback(Cr.NS_ERROR_NO_INTERFACE);
+  },
+
+  // nsIFactory implementation
+  createInstance(iid) {
+    return this.QueryInterface(iid);
+  },
+};
+
+window.ChannelEventSink.init();
+window.ChannelEventSink.register();
+})})
+
+// test cross origin by redirection without CORS
+.then(() => testPreloadEvent(SAME_ORIGIN + "?redirect=crossorigin&statusCode=200&cacheControl=no-cache", false, false))
+
+.catch((err) => ok(false, "promise rejected: " + err))
+.then(async () => {
+  await SpecialPowers.spawnChrome([], () => {
+    let window = this.browsingContext.currentWindowGlobal;
+    window.ChannelEventSink.unregister();
+    delete window.ChannelEventSink;
+  })
+})
+.then(() => SimpleTest.finish());
+
+</script>
+</body>
+</html>