Rewrite test cases for RecordSaveHandler
Rewrite test cases for RecordSaveHandler

rickmak/skygear-server,rickmak/skygear-server,SkygearIO/skygear-server,SkygearIO/skygear-server,SkygearIO/skygear-server,SkygearIO/skygear-server,rickmak/skygear-server