Software Testing

System Modeling vs. Test Modeling: Complexity

Creating a system model – a model that directly describes the intended system behavior – is “easier” than creating tester models – models that describe the testing strategies themselves. This position has been demonstrated both within practical and theoretical frameworks. This correlates well with day-to-day observations of test managers: ...

Test Design Techniques: Conformiq’s Insights

Test design concerns making the decisions on (1) what to and what not to test, (2) how to stimulate the system and with what data values, and (3) how the system should react and respond to the stimuli. It is a separate task from test execution and is done before executing the tests against the system. Test design techniques, on the other hand, are ...

ECP & BVA as Black Box Test Design Heuristics

Boundary value analysis is a refinement of the equivalence class partitioning method which again is one of the most generally applicable methods for black-box test design. The idea of equivalence class partitioning is to divide the all possible inputs to the system into “equivalence classes”, i.e. sets of inputs that should produce “analogous” ...

Black Box vs. White Box Coverage

When talking about black-box and white-box testing, the term "box" refers to the system under test or SUT where the "color of the box" refers to the visibility that a tester has to the internal details of the SUT. When we talk about black-box testing, the tester judges the quality and correctness of the system without seeing inside this box ...

Stochastic Use Case Testing & Markov Chaining

In this post I'll go through the basics for "stochastic use case testing". It is sometimes called also "Markov chaining" or "Markov testing". There are variations of this technique, of course, but my aim here is to cover the common ground and share some thoughts on where methods like this are best applied. (more…)