diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/update/tests/unit_aus_update/downloadResumeForSameAppVersion.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/update/tests/unit_aus_update/downloadResumeForSameAppVersion.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,42 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+function run_test() {
+  setupTestCommon();
+
+  logTestInfo("testing resuming an update download in progress for the same " +
+              "version of the application on startup (Bug 485624)");
+
+  var patches, updates;
+
+  patches = getLocalPatchString(null, null, null, null, null, null,
+                                STATE_DOWNLOADING);
+  updates = getLocalUpdateString(patches, null, null, "1.0", "1.0");
+  writeUpdatesToXMLFile(getLocalUpdatesXMLString(updates), true);
+  writeStatusFile(STATE_DOWNLOADING);
+
+  writeUpdatesToXMLFile(getLocalUpdatesXMLString(""), false);
+
+  standardInit();
+
+  if (IS_TOOLKIT_GONK) {
+    // GONK doesn't resume downloads at boot time, so the updateCount will
+    // always be zero.
+    do_check_eq(gUpdateManager.updateCount, 0);
+  } else {
+    do_check_eq(gUpdateManager.updateCount, 1);
+  }
+  do_check_eq(gUpdateManager.activeUpdate.state, STATE_DOWNLOADING);
+
+  // Pause the download and reload the Update Manager with an empty update so
+  // the Application Update Service doesn't write the update xml files during
+  // xpcom-shutdown which will leave behind the test directory.
+  gAUS.pauseDownload();
+  writeUpdatesToXMLFile(getLocalUpdatesXMLString(""), true);
+  writeUpdatesToXMLFile(getLocalUpdatesXMLString(""), false);
+  reloadUpdateManagerData();
+
+  do_timeout(TEST_CHECK_TIMEOUT, doTestFinish);
+}