add thread subset test

config/mongoid.yml

-development:
+development2:
   sessions:
     default:
       database: cs_comments_service_development
       hosts:
         - localhost:27017
-
+development:
+  sessions:
+    default:
+      database: comments-prod-clone
+      hosts:
+        - charlotte.mongohq.com:10035
+      username: kevinchugh@edx.org
+      password: lewis123
 test:
   sessions:
     default:

spec/api/notifications_spec.rb

@@ -26,6 +26,30 @@ describe "app" do
         last_response.should be_ok
         last_response.body.to_s.include?(dummy).should == true
       end
+
+      it "returns only threads subscribed to by user" do
+        start_time = Date.today - 400.days
+        end_time = Time.now
+        user = User.find Subscription.first.subscriber_id
+        post "/api/v1/notifications", from: CGI::escape(start_time.to_s), to: CGI::escape(end_time.to_s), user_ids: user.id
+        last_response.should be_ok
+        payload = JSON.parse last_response.body
+        courses = payload[user.id.to_s]
+        thread_ids = []
+        courses.each do |k,v|
+            v.each do |kk,vv|
+                thread_ids << kk
+            end
+        end
+        #now make sure the threads are a subset of the user's subscriptions
+        puts user.id
+        subscriptions = Subscription.where(:subscriber_id => user.id.to_s)
+        subscribed_thread_ids = subscriptions.collect{|s| s.source_id}
+
+        (subscribed_thread_ids.to_set.superset? thread_ids.to_set).should == true
+
+      end
+
     end
   end
 end