Tomáš PotužákDepartment of Computer Science and EngineeringFaculty of Applied SciencesUniversity of West Bohemia, Pilsen, Czech Republic 1

Component-based Simulation Framework for Testing of Software Components

> Introduction and Motivation>Component Models and Frameworks>Simulation Framework Description

> Features> Components Interactions> Restrictions and Issues

>Live Demonstration of the Simulation Framework>Future Work

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Presentation Content

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

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

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

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

Framework – Types of Components

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

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)

Framework – Real/Simulated Components

Framework – Real/Real Components

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.

Framework – Live Demonstration

>Demonstration of the simple case study directly in the simulation framework

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

Thank you for your attention

>Questions?