A test executor for testing an application programming interface of a software application includes a plurality of invokers, a mapper/converter, and a comparer. The plurality of invokers includes a software application invoker and a database application invoker. The software application invoker is adapted to communicate with a software application through an application programming interface of the software application while the database application invoker is adapted to communicate with a database application through an application programming interface of the database application. The mapper/converter is in communication with the plurality of invokers. The mapper/converter converts results from at least one of the software application invoker and the database application invoker into a common data format. The comparer is in communication with the mapper/converter and compares the results in the common data format to assess the functionality of the application programming interface of the software application.