Remove Discourse.transient. Use a singleton for session data, it's a lot cleaner.

test/javascripts/models/session_test.js

@@ -0,0 +1,16 @@
+module("Discourse.Session");
+
+test('current', function(){
+  var session = Discourse.Session.current();
+
+  present(session, "We have a current site session");
+  equal(session, Discourse.Session.current(), "Calling it a second time returns the same instance");
+
+  blank(Discourse.Session.current('orange'), "by default properties are nil");
+  session.set('orange', 'newBlack');
+  equal(Discourse.Session.current('orange'), "newBlack", "it remembers values");
+
+  Discourse.Session.current('orange', 'juice');
+  equal(session.get('orange'), "juice", "it can be updated");
+
+});