diff -r 000000000000 -r 6474c204b198 content/base/test/unit/test_thirdpartyutil.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/test/unit/test_thirdpartyutil.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// Test ThirdPartyUtil methods. See mozIThirdPartyUtil.
+
+Components.utils.import("resource://gre/modules/NetUtil.jsm");
+
+let Cc = Components.classes;
+let Ci = Components.interfaces;
+let NS_ERROR_INVALID_ARG = Components.results.NS_ERROR_INVALID_ARG;
+
+function do_check_throws(f, result, stack)
+{
+  if (!stack) {
+    try {
+      // We might not have a 'Components' object.
+      stack = Components.stack.caller;
+    } catch (e) {
+    }
+  }
+
+  try {
+    f();
+  } catch (exc) {
+    do_check_eq(exc.result, result);
+    return;
+  }
+  do_throw("expected " + result + " exception, none thrown", stack);
+}
+
+function run_test() {
+  let util = Cc["@mozilla.org/thirdpartyutil;1"].getService(Ci.mozIThirdPartyUtil);
+
+  // Create URIs and channels pointing to foo.com and bar.com.
+  // We will use these to put foo.com into first and third party contexts.
+  let spec1 = "http://foo.com/foo.html";
+  let spec2 = "http://bar.com/bar.html";
+  let uri1 = NetUtil.newURI(spec1);
+  let uri2 = NetUtil.newURI(spec2);
+  let channel1 = NetUtil.newChannel(uri1);
+  let channel2 = NetUtil.newChannel(uri2);
+
+  // Create some file:// URIs.
+  let filespec1 = "file://foo.txt";
+  let filespec2 = "file://bar.txt";
+  let fileuri1 = NetUtil.newURI(filespec1);
+  let fileuri2 = NetUtil.newURI(filespec2);
+  let filechannel1 = NetUtil.newChannel(fileuri1);
+  let filechannel2 = NetUtil.newChannel(fileuri2);
+
+  // Test isThirdPartyURI.
+  do_check_false(util.isThirdPartyURI(uri1, uri1));
+  do_check_true(util.isThirdPartyURI(uri1, uri2));
+  do_check_true(util.isThirdPartyURI(uri2, uri1));
+  do_check_false(util.isThirdPartyURI(fileuri1, fileuri1));
+  do_check_false(util.isThirdPartyURI(fileuri1, fileuri2));
+  do_check_true(util.isThirdPartyURI(uri1, fileuri1));
+  do_check_throws(function() { util.isThirdPartyURI(uri1, null); },
+    NS_ERROR_INVALID_ARG);
+  do_check_throws(function() { util.isThirdPartyURI(null, uri1); },
+    NS_ERROR_INVALID_ARG);
+  do_check_throws(function() { util.isThirdPartyURI(null, null); },
+    NS_ERROR_INVALID_ARG);
+
+  // We can't test isThirdPartyWindow since we can't really set up a window
+  // heirarchy. We leave that to mochitests.
+
+  // Test isThirdPartyChannel. As above, we can't test the bits that require
+  // a load context or window heirarchy.
+  do_check_throws(function() { util.isThirdPartyChannel(null); },
+    NS_ERROR_INVALID_ARG);
+  do_check_throws(function() { util.isThirdPartyChannel(channel1); },
+    NS_ERROR_INVALID_ARG);
+  do_check_throws(function() { util.isThirdPartyChannel(channel1, uri1); },
+    NS_ERROR_INVALID_ARG);
+  do_check_true(util.isThirdPartyChannel(channel1, uri2));
+  let httpchannel1 = channel1.QueryInterface(Ci.nsIHttpChannelInternal);
+  httpchannel1.forceAllowThirdPartyCookie = true;
+  do_check_false(util.isThirdPartyChannel(channel1));
+  do_check_false(util.isThirdPartyChannel(channel1, uri1));
+  do_check_true(util.isThirdPartyChannel(channel1, uri2));
+}
+