diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/downloads/tests/chrome/utils.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/downloads/tests/chrome/utils.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,160 @@
+/* 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/. */
+
+/**
+ * Provides utility functions for the download manager chrome tests.
+ */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+/**
+ * Returns the toolkit implementation of the download manager UI service.
+ * If the toolkit implementation of the service can't be found (e.g. because
+ * SeaMonkey doesn't package that version but an own implementation that calls
+ * different UI), then returns false (see bug 483781).
+ *
+ * @returns toolkit's nsIDownloadManagerUI implementation or false if not found
+ */
+function getDMUI()
+{
+  try {
+    // This method throws an exception if the old Download Manager is disabled.
+    Services.downloads.activeDownloadCount;
+  } catch (ex) {
+    return false;
+  }
+  if (Components.classesByID["{7dfdf0d1-aff6-4a34-bad1-d0fe74601642}"])
+    return Components.classesByID["{7dfdf0d1-aff6-4a34-bad1-d0fe74601642}"].
+           getService(Ci.nsIDownloadManagerUI);
+  return false;
+}
+
+/**
+ * Adds a live download to the download manager.
+ *
+ * @param [optional] aName
+ *        The name that will be assigned to the downloaded file.
+ * @returns an instance of nsIDownload.
+ */
+function addDownload(aName) {
+    function createURI(aObj) {
+      let ios = Cc["@mozilla.org/network/io-service;1"].
+                getService(Ci.nsIIOService);
+      return (aObj instanceof Ci.nsIFile) ? ios.newFileURI(aObj) :
+                                            ios.newURI(aObj, null, null);
+    }
+
+    function randomString() {
+      let chars = "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
+      let string_length = 8;
+      let randomstring = "";
+      for (let i=0; i<string_length; i++) {
+        let rnum = Math.floor(Math.random() * chars.length);
+        randomstring += chars.substring(rnum, rnum+1);
+      }
+      return randomstring;
+    }
+
+    let dm = Cc["@mozilla.org/download-manager;1"].
+             getService(Ci.nsIDownloadManager);
+    const nsIWBP = Ci.nsIWebBrowserPersist;
+    let persist = Cc["@mozilla.org/embedding/browser/nsWebBrowserPersist;1"]
+                  .createInstance(Ci.nsIWebBrowserPersist);
+    persist.persistFlags = nsIWBP.PERSIST_FLAGS_REPLACE_EXISTING_FILES |
+                           nsIWBP.PERSIST_FLAGS_BYPASS_CACHE |
+                           nsIWBP.PERSIST_FLAGS_AUTODETECT_APPLY_CONVERSION;
+    let dirSvc = Cc["@mozilla.org/file/directory_service;1"].
+                 getService(Ci.nsIProperties);
+    let dmFile = dirSvc.get("TmpD", Ci.nsIFile);
+    dmFile.append(aName || ("dm-test-file-" + randomString()));
+    if (dmFile.exists())
+      throw "Download file already exists";
+  
+    let dl = dm.addDownload(Ci.nsIDownloadManager.DOWNLOAD_TYPE_DOWNLOAD,
+                            createURI("http://example.com/httpd.js"),
+                            createURI(dmFile), null, null,
+                            Math.round(Date.now() * 1000), null, persist, false);
+
+    let privacyContext = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                               .getInterface(Ci.nsIWebNavigation)
+                               .QueryInterface(Ci.nsILoadContext);
+
+    persist.progressListener = dl.QueryInterface(Ci.nsIWebProgressListener);
+    persist.saveURI(dl.source, null, null, null, null, dl.targetFile, privacyContext);
+
+    return dl;
+  }
+
+/**
+ * Used to populate the dm with dummy download data.
+ *
+ * @param aDownloadData
+ *        An array that contains the dummy download data to be added to the DM.
+ *        Expected fields are:
+ *          name, source, target, startTime, endTime, state, currBytes,
+ *          maxBytes, preferredAction, and autoResume
+ */
+function populateDM(DownloadData)
+{
+  let dm = Cc["@mozilla.org/download-manager;1"].
+           getService(Ci.nsIDownloadManager);
+  let db = dm.DBConnection;
+
+  let stmt = db.createStatement(
+    "INSERT INTO moz_downloads (name, source, target, startTime, endTime, " +
+      "state, currBytes, maxBytes, preferredAction, autoResume) " +
+    "VALUES (:name, :source, :target, :startTime, :endTime, :state, " +
+      ":currBytes, :maxBytes, :preferredAction, :autoResume)");
+  for each (let dl in DownloadData) {
+    for (let prop in dl)
+      stmt.params[prop] = dl[prop];
+
+    stmt.execute();
+  }
+  stmt.finalize();
+}
+
+/**
+ * Returns an instance to the download manager window
+ *
+ * @return an instance of nsIDOMWindow
+ */
+function getDMWindow()
+{
+  return Cc["@mozilla.org/appshell/window-mediator;1"].
+         getService(Ci.nsIWindowMediator).
+         getMostRecentWindow("Download:Manager");
+}
+
+/**
+ * Establishes a clean state to run a test in by removing everything from the
+ * database and ensuring that the download manager's window is not open.
+ */
+function setCleanState()
+{
+  let dm = Cc["@mozilla.org/download-manager;1"].
+           getService(Ci.nsIDownloadManager);
+
+  // Clean the dm
+  dm.DBConnection.executeSimpleSQL("DELETE FROM moz_downloads");
+
+  let win = getDMWindow();
+  if (win) win.close();
+}
+
+/**
+ * Clears history invoking callback when done.
+ */
+function waitForClearHistory(aCallback) {
+  Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
+  Services.obs.addObserver(function observeClearHistory(aSubject, aTopic) {
+    Services.obs.removeObserver(observeClearHistory, aTopic);
+    aCallback();
+  }, PlacesUtils.TOPIC_EXPIRATION_FINISHED, false);
+  PlacesUtils.bhistory.removeAllPages();
+}