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Tutorial C

Test Design with Data Combination Testing and Classification Trees

Rik Marselis

09:00-17:00 CEST Tuesday 7th June

Test case design is one of the core competences of the quality engineering & testing profession. If you want to properly shape your testing, which test design technique(s) do you use? And is this effective and efficient?

Suppose you must test the entry-check of the new Wuthering Heights Rollercoaster in the QualityLand amusement park. Every person must be at least 120 cm tall to be allowed in the rollercoaster. What technique would you use? Boundary Value Analysis, right? That’s not a tough choice. But now the product owner of QualityLand has made the situation much more complex. The height of people is split in 3 categories: less than 120 cm is not allowed, from 120 to 140 cm people will get a seat-extender and people taller than 140 cm are allowed. If the total weight of the people on the ride is between 700 and 1000 kg the ride will go. If the total weight is less than 700 kg extra weight-blocks are added. And if the total weight exceeds 1000 kg people must stay behind to get the right weight.

So, now you have 2 data items, with together 6 possible values. What test case design technique do you use? And what coverage can you achieve?

In the above example choose a data-oriented test design technique. But which?

In this situation, the Data Combination Test design technique, which uses Classification Trees, is a very suitable technique. And because this technique can be combined with 3 different coverage types you have a great way to align with the risk level of the application. So, in your test strategy, you can vary the test intensity from low (with all values of data items used at least once) to medium (with pairwise coverage of the data items) and to high intensity (with all combinations of all values used).

Join me in this full-day tutorial about DCT & CT and I will make sure that you can use the techniques (with our Excel and Powerpoint templates) at the very next day you return to work.

What you will learn

  1. Using the free tools the attendee can start using this way of test design the very next day they return at work
  2. Using the free tools the attendee can start using this way of test design the very next day they return at work
  3. Test design is an important competence and when properly done it is also a lot of fun!!

Session Details

  • Intermediate
  • 7 hrs
  • Interactive Tutorial
  • Approaches, Techniques & Types of Testing
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In this video Rik Marselis shares why you should attend his tutorial, ‘Test Design with Data Combination Testing and Classification Trees’.

We look forward to welcoming you to EuroSTAR 2022.

Session Speaker

Rik Marselis, EuroSTAR 2022 tutorial trainer.

Rik Marselis

Principal Quality Consultant – Sogeti, Netherlands

Rik Marselis is a principal quality consultant at Sogeti in the Netherlands. He is a highly regarded presenter, trainer, author, consultant, mentor and coach who supported many organizations and people in improving their quality engineering practice by providing useful tools & checklists, practical support and having in-depth discussions. His presentations are always appreciated for their liveliness, his ability to keep the talks serious but light, and his use of practical examples with humorous comparisons. Rik is an accredited trainer for TMAP, ISTQB and TPI certification training courses, but also, he has created and delivered many bespoke workshops and training courses. For example, on quality engineering and on Intelligent Machines and DevOps testing. Rik is a fellow of Sogeti’s R&D network SogetiLabs. These R&D activities result in presentations, books, white-papers, articles, podcasts and blogs about IT in general and quality engineering in particular. In 2020 his latest TMAP book “Quality for DevOps teams” was presented.

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