Send a message to moderators when a newuser_spam_host_threshold is exceeded. Send it no more than once per day per user.

spec/components/post_creator_spec.rb

@@ -216,11 +216,19 @@ describe PostCreator do
     end
 
     it "does not create the post" do
+      GroupMessage.stubs(:create)
       creator.create
       creator.errors.should be_present
       creator.spam?.should be_true
     end
 
+    it "sends a message to moderators" do
+      GroupMessage.expects(:create).with do |group_name, msg_type, params|
+        group_name == Group[:moderators].name and msg_type == :spam_post_blocked and params[:user].id == user.id
+      end
+      creator.create
+    end
+
   end
 
   # more integration testing ... maximise our testing