fix project.last_activity spec

app/models/project.rb

@@ -158,7 +158,7 @@ class Project < ActiveRecord::Base
   end
 
   def last_activity
-    events.order("created_at DESC").first || nil
+    events.order("created_at ASC").last
   end
 
   def last_activity_date

spec/models/project_spec.rb

@@ -141,7 +141,7 @@ describe Project do
     let(:last_event) { double }
 
     before do
-      project.stub(:events).and_return( [ double, double, last_event ] )
+      project.stub_chain(:events, :order).and_return( [ double, double, last_event ] )
     end
 
     it { project.last_activity.should == last_event }