Tomáš Potužák Department of Computer Science and Engineering Faculty of Applied Sciences

1. Component-based Simulation Framework for Testing of Software Components Tomáš Potužák Department of Computer Science and Engineering Faculty of Applied Sciences University of West Bohemia, Pilsen, Czech Republic

2. Presentation Content • Introduction and Motivation • Component Models and Frameworks • Simulation Framework Description • Features • Components Interactions • Restrictions and Issues • Live Demonstration of the Simulation Framework • Future Work

3. Introduction and Motivation Software component approach System constructed from set of individual components potentially created by various parties Each component considered as black-box with no externally observable state Testing of components Often tested for extra-functional properties and quality of services (functionality according specification often considered implied) Often utilization of potentially incorrect models of components Simulation framework for testing of real components

4. Component Models and Frameworks Component model Specifies the look, behavior, and interaction of the components Component framework Implementation of an specific component model Not to be confused with simulation framework for testing OSGi component framework Widely used in many fields of industry Spring DM extension of the OSGi Simplification of the development process

5. Simulation Framework for Component Testing A simulation framework designed using SpringDM for testing of real components No need for creation of models of the tested components Testing of OSGi components Framework also constructed from components Modularity of the framework Easy to change the features of the simulation Implementation of the simulation framework Tomáš Kabíček and Matěj Prokop as two master thesis

6. Framework – Types of Components Components of the framework Components necessary for functionality of the framework Real tested components Components to be tested in the simulation framework Simulated components Components for providing of the services required by the real tested components Intermediate components Components for mediating of the services between two real tested components

7. Framework – Types of Components

8. Framework – Features I Possible to test one or more real components in simulation environment Services required by the real tested components provided by other real components or simulated components All services invocations managed by the simulation framework using event calendar without necessity of deprecated methods Depiction of components Three variously detailed variants, automated components layout Depiction of the simulation run by components highlighting and depiction of the events in the calendar

9. Framework – Features II Logging of all events of the simulation run into a text file Logged all events, similar to the depiction of the calendar, but more detailed Simulation scenarios described in XML files Description of the components and their types Description of external events in the simulation run Description of the behavior of the simulated components (in separate XML files)

10. Framework – Real/Simulated Components

11. Framework – Real/Real Components

12. Framework – Restrictions and Issues Restriction Only for OSGi/SpringDM components Issues No collections of statistics/results aside the log Only one simple case study implemented, many aspects not tested No handling of system time calls, remote services etc.

13. Framework – Live Demonstration Demonstration of the simple case study directly in the simulation framework

14. Future Work Implementation of a component for statistics collections As a master thesis of a student Testing of two more advanced case studies File manager Traffic crossroad Solving of issues Handling of system time calls and remote connections

15. Thank you for your attention Questions?