Fix observer test

spec/observers/user_observer_spec.rb

@@ -13,7 +13,7 @@ describe UserObserver do
   end
 
   context 'when a new user is created' do
-    let(:user) { double(:user, id: 42, password: 'P@ssword!') }
+    let(:user) { double(:user, id: 42, password: 'P@ssword!', name: 'John', email: 'u@mail.local') }
     let(:notification) { double :notification }
 
     it 'sends an email' do
@@ -22,5 +22,10 @@ describe UserObserver do
 
       subject.after_create(user)
     end
+
+    it 'trigger logger' do
+      Gitlab::AppLogger.should_receive(:info)
+      subject.after_create(user)
+    end
   end
 end