diff -r 000000000000 -r 6474c204b198 extensions/cookie/test/unit/test_bug667087.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/cookie/test/unit/test_bug667087.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/NetUtil.jsm");
+
+function run_test() {
+  var cs = Cc["@mozilla.org/cookieService;1"].getService(Ci.nsICookieService);
+  var cm = Cc["@mozilla.org/cookiemanager;1"].getService(Ci.nsICookieManager2);
+  var expiry = (Date.now() + 1000) * 1000;
+
+  // Test our handling of host names with a single character consisting only
+  // of a single character
+  cm.add("a", "/", "foo", "bar", false, false, true, expiry);
+  do_check_eq(cm.countCookiesFromHost("a"), 1);
+  do_check_eq(cs.getCookieString(NetUtil.newURI("http://a"), null), "foo=bar");
+}