Convert all CoffeeScript to Javascript. See:

http://meta.discourse.org/t/is-it-better-for-discourse-to-use-javascript-or-coffeescript/3153

spec/javascripts/user_action_spec.js

@@ -0,0 +1,34 @@
+/*global waitsFor:true expect:true describe:true beforeEach:true it:true */
+(function() {
+
+  describe("Discourse.UserAction", function() {
+    return describe("collapseStream", function() {
+      return it("collapses all likes", function() {
+        var actions;
+        actions = [
+          Discourse.UserAction.create({
+            action_type: Discourse.UserAction.LIKE,
+            topic_id: 1,
+            user_id: 1,
+            post_number: 1
+          }), Discourse.UserAction.create({
+            action_type: Discourse.UserAction.EDIT,
+            topic_id: 2,
+            user_id: 1,
+            post_number: 1
+          }), Discourse.UserAction.create({
+            action_type: Discourse.UserAction.LIKE,
+            topic_id: 1,
+            user_id: 2,
+            post_number: 1
+          })
+        ];
+        actions = Discourse.UserAction.collapseStream(actions);
+        expect(actions.length).toBe(2);
+        expect(actions[0].get("children").length).toBe(1);
+        return expect(actions[0].get("children")[0].items.length).toBe(2);
+      });
+    });
+  });
+
+}).call(this);