November 10 – 12, 2020

Online Edition!

EUROPE'S GREATEST AGILE SOFTWARE TESTING FESTIVAL!

Systems Theoretical Testing Analysis

A space grade analysis technique based on systems theory that identifies safety, security, and quality risks, and critical test cases for your stories.

STP(T)A is a holistic approach which can be used to analyze a design while it’s being sketched and identify tests that will prove the quality of the whole system.

With STPA, I have been able to analyze:

•Risks in the organization

•Critical integration tests

•Unit tests that prove quality, security, and safety

Traditional risk analysis is based on experience and gut feeling. STPA is a new risk analysis method where risks found will be clearly documented and understandable. STPA has helped me build trust in testing.

There’s a philosophical aspect to this.

The verb testing comes from latin testa, noun for the pot of clay in which tradesmen used to test the value of gold used in their transactions by melting it over fire. Testing was a necessary step as the purity of the gold of stamped coins could not be trusted.

Complex software is pure design. The value of it as experienced by our users and stakeholders is emergent. In that way software is like gold: It might have some claimed quality. But no simple inspection of the code can prove or even evaluate that. We need to test it.

However, the complexity of modern systems means testability often sucks as the costs and complexity of setting up test environments explodes. For years, I’ve been looking for a technique to reduce the scope of testing to make development cycles faster. STPA is what I’ve found.

Testability is the degree to which an artefact supports being tested. Validating through so called “end-to-end testing” of complete systems is often very expensive. In the sprint, developing a component, it’s sometimes impossible.

But waiting until after the sprint is too late. Only testing in production is a bad idea, and a bug found late is expensive to fix, and impossible to learn and improve from.

In the talk, I’ll introduce STPA and live-analyze a new system to demonstrate its power.


More Related Sessions


30-minute Talk

10:25-10:55 Room F2 - Track 2: Talks

How to keep your agility as a tester

120-minute Workshop

10:25-12:25 Room D1+D2 - Track 6: Workshops

Exploring Testability

Two-Day Tutorial (12-hour Workshop)

9:00-17:00

Exploring Security

Equipment required

If you like AgileTD you might also be interested in :

Your privacy matters

We use cookies to understand how you use our site and to give you the best experience on our website. If you continue to use this site we will assume that you are happy with it and accept our use of cookies, Privacy Policy and Terms of Use.