* ITEQS 2021 is held as a virtual workshop *
12 April 2021Porto de Galinhas, Brazil


5th International Workshop on Testing Extra-Functional Properties and Quality Characteristics of Software Systems

Co-located with ICST 2021
Submission Deadline: January 20, 2021 (Extended)








<Time to Deadline>

Call For Papers

The workshop does not accept papers that focus purely on functional testing!

Download: Flyer as PDF ----- Call-for-Papers as text

Towards the goal of ITEQS, the topics of interest for the workshop include, but are not limited to, the following:

  • Model-based testing of EFPs; e.g., choice of modeling languages to capture EFPs and their role on testability, model-based test case generation, etc.
  • Testing of AI and Machine Learning based systems with respect to quality attributes; e.g., such as safety, security, and ethical concerns
  • Performance, Robustness, and Security Testing
  • Testing quality in software product lines and variant-intensive system
  • Testing quality characteristics of distributed, mobile, and cloud applications
  • Mutation-based testing for EFPs; e.g., application of mutation techniques for testing of EFPs particularly introduction of EFP-specific mutation operators
  • Search-based and AI techniques for testing EFPs
  • Testability, observability, and the role of the platform; e.g., how choosing an operating system can impact testability of EFPs, for instance, a real-time operating system, introducing testability mechanisms into a platform, designing middlewares for testing of EFPs
  • Empirical studies and experience reports; e.g., on the importance of testing EFPs, evaluation of testing methods, case-study and reports on project failures due to EFPs, comparison of methods and techniques
  • Quality assurance, standards, and their impact on testing EFPs
  • Requirements and testing EFPs; e.g., identification and generation of test oracles for EFPs from requirements, requirements for testability, traceability
  • Coverage criteria in testing EFPs
  • Processes and their role in testing EFPs; e.g., agile and TDD
  • Fault localization for EFPs and debugging
  • Formal methods, model-checking, and reasoning about EFPs
  • Parallelism, Concurrency, and Testing of multicore applications
  • Testing real-time, embedded, and cyber-physical systems, and their challenges

As the presence and role of computer systems in our daily life increases, we rely more and more on the services that are provided by software. On one hand, more tasks and functions are delegated to software systems (e.g., in the automotive domain), and on the other hand, the expectations and demands on the variety of services provided by these systems are dramatically growing (e.g., in mobile phones). In this context, the success of a software product may not only be dependent on logical correctness of its functions, but also on their quality characteristics and how they perform. Such system characteristics, which are referred to and captured as Extra-Functional Properties (EFPs), or Non-Functional Properties, have determinant importance particularly in resource constrained systems. For instance, in real-time embedded domain there can be limitations on available memory, CPU and processing capability, power consumption, and so on, that need to be considered along with timing requirements of an application. Considering the rapid development towards increased integration of software with the social and physical world that we see today, quality aspects become more important in an increasing number of the systems and devices we use and depend on. These systems therefore, need to be tested with a special attention to EFPs such as safety, security, performance and robustness.

Testing a system with respect to its EFPs, however, poses specific challenges and traditional functional testing methods and approaches may not simply be applicable. Examples of such challenges are: fault localization, the need to have appropriate techniques for different types of EFPs, the role and impact of the environment in testing EFPs, observability and testability issues, coverage and test-stop criteria, modeling EFPs and generating meaningful test cases, mutation operators for EFPs, etc.

ITEQS provides a well-focused forum with the goal of bringing together researchers and practitioners to share ideas, identify challenges, propose solutions and techniques, and in general expand the state of the art in testing EFPs and quality characteristics of software systems and services.

Check the topics of interest for more details.

The workshop promotes two types of contributions in IEEE double-column format:

  1. 1) Position papers and also solid Work-in-Progress papers consisting of 4 pages. WiP papers should provide concrete (but not necessarily complete) solutions and results as well as detailed plans for future extensions. Position papers should provide a clear position about research in testing EFPs arguing for a particular research direction in this area, discussing open problems and challenges, emerging topics and applications, and so on.
  2. 2) Full research papers consisting of 6-10 pages.

Each submitted paper will receive at least three reviews. To be faithful to the scope and goals of the workshop, papers that focus only on functional aspects and fail to address any EFPs and quality attributes will not be accepted.

Papers must conform to the IEEE double-column format (http://www.ieee.org/conferences_events/conferences/publishing/templates.html). Authors can submit their papers through easychair at: https://easychair.org/conferences/?conf=iteqs2021. Accepted and presented papers will be included in the IEEE CPS Proceedings.

Important Dates

Submission Deadline January 20, 2021 (Extended)
Notification of Acceptance February 09, 2021
Camera-ready Deadline February 20, 2021
Workshop Date April 12, 2021


To be updated...

Organizing Committee

Contact us: iteqs2021 [at] easychair [dot] org or mehrdad.saadatmand [at] ri [dot] se

Mehrdad Saadatmand

General chair

RISE SICS Västerås, Sweden

Dragos Truscan

Program chair

Åbo Akademi University, Finland

Eduard Enoiu

Program chair

Mälardalen University, Sweden

Program Committee

Brian Nielsen

Aalborg University, Denmark

Jüri Vain

Tallinn University of Technology, Estonia

Mahsa Varshosaz

IT University of Copenhagen, Denmark

Franz Wotawa

Graz University of Technology, Austria

Ali Sedaghatbaf

RISE Research Institutes of Sweden, Sweden

Björn Lisper

Mälardalen University, Sweden

Zohaib Iqbal

National University of Computer and Emerging Sciences, Pakistan

Fabrizio Pastore

University of Luxembourg, Luxembourg

Bestoun S. Ahmed

Karlstad University, Sweden

Shaukat Ali

Simula Research Laboratory, Norway

Bernhard K. Aichernig

Graz University of Technology, Austria

General sponsors

organizations that support us


  • Alfândega Porto Congress Centre, Porto, Portugal