diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug321000.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug321000.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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/. */
+
+const kTestString = "  hello hello  \n  world\nworld  ";
+
+var gTests = [
+
+  { desc: "Urlbar strips newlines and surrounding whitespace",
+    element: gURLBar,
+    expected: kTestString.replace(/\s*\n\s*/g,'')
+  },
+
+  { desc: "Searchbar replaces newlines with spaces",
+    element: document.getElementById('searchbar'),
+    expected: kTestString.replace('\n',' ','g')
+  },
+
+];
+
+// Test for bug 23485 and bug 321000.
+// Urlbar should strip newlines,
+// search bar should replace newlines with spaces.
+function test() {
+  waitForExplicitFinish();
+
+  let cbHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                 getService(Ci.nsIClipboardHelper);
+
+  // Put a multi-line string in the clipboard.
+  // Setting the clipboard value is an async OS operation, so we need to poll
+  // the clipboard for valid data before going on.
+  waitForClipboard(kTestString, function() { cbHelper.copyString(kTestString, document); },
+                   next_test, finish);
+}
+
+function next_test() {
+  if (gTests.length)
+    test_paste(gTests.shift());
+  else
+    finish();
+}
+
+function test_paste(aCurrentTest) {
+  var element = aCurrentTest.element;
+
+  // Register input listener.
+  var inputListener = {
+    test: aCurrentTest,
+    handleEvent: function(event) {
+      element.removeEventListener(event.type, this, false);
+
+      is(element.value, this.test.expected, this.test.desc);
+
+      // Clear the field and go to next test.
+      element.value = "";
+      setTimeout(next_test, 0);
+    }
+  }
+  element.addEventListener("input", inputListener, false);
+
+  // Focus the window.
+  window.focus();
+  gBrowser.selectedBrowser.focus();
+
+  // Focus the element and wait for focus event.
+  info("About to focus " + element.id);
+  element.addEventListener("focus", function() {
+    element.removeEventListener("focus", arguments.callee, false);
+    executeSoon(function() {
+      // Pasting is async because the Accel+V codepath ends up going through
+      // nsDocumentViewer::FireClipboardEvent.
+      info("Pasting into " + element.id);
+      EventUtils.synthesizeKey("v", { accelKey: true });
+    });
+  }, false);
+  element.focus();
+}