Kimmo Nupponen

Mutation Operators in Conformiq Designer

In recent blog posts about test generation for mutation testing, I have detailed that mutants introduce small changes into the original model each mimicking a potential software bug. These changes are seeded on a set of mutation operators that are rules applied to the system to create mutants. These are simple syntactic or semantic transformation ...

Generating Tests for Mutation Analysis

Recently I wrote a blog post about mutation testing. That post was a high level overview of what mutation testing is and how mutation analysis can be applied in automatic test generation. This time I was thinking of writing a more hands-on blog post about how to interpret and understand test cases generated by Conformiq’s recently introduced ...

Conformiq Designer 5.0 for Mutation Testing

We are super excited to announce the release of Conformiq Designer 5.0 which includes a support for mutation testing! This version of Designer automatically designs and generates test cases that target certain types of software bugs. This support will not only immensely increase the quality of the generated test cases, but also provides a better ...

Mutation Testing

Mutation testing is a software testing method which involves modifying the system code in small changes, yielding a faulty system, a mutant of the original one. These changes mimic typical errors that a programmer could have made. The goal is to find weaknesses in a test suite and to develop more effective one. Mutation analysis is typically ...

MBT User Survey 2019

If you have evaluated, used, or are using any model-based testing approach, please take a few minutes to respond to the 2019 Model-based Testing User Survey. This year, the 2019 MBT User Survey is a joint initiative of the French and German Testing Boards. It is already the fourth edition of this survey. Our purpose is to collect data and ...

Conformiq is Hiring!

Conformiq is a global, privately held company with offices in the United States, Finland and India. The company has a culture and environment that combines the best of the energy of the Silicon Valley and the Nordic know-how. Our mission is to enable our customers to create better software faster and with lower costs. While the core of our ...

Creator 4.0 — Faster and More Capable Than Ever Before

The stuff that I often write about pertains to performance of test generation. The reason for this is quite clear: performance has been and still is one of the biggest stumbling blocks in deploying model based testing and automated test design in an industrial context. We, as a technology provider, are not the only one affected by this. In fact ...

Solving a Game of Sudoku Using a Test Generator

OK I admit that this is a bit farfetched. I don’t ever recall a test manager whose biggest concern would have been how to efficiently solve and test Sudokus. I was simply in a mood of having some fun and what would be better than working with a Sudoku problem. I bet that you have firsthand experience on solving those and just like me, you have ...

Writing Test Cases Manually Is Faster Than Modeling… Huh?

Over the years I have been wondering why folks involved in testing are not more eager to adopt practices that we have shown numerous times to be superior to current practices. Let’s face it, making sure that all the interesting scenarios and corner cases have properly, effectively, and efficiently been tested is not an easy task. In fact, the ...

Model-Based Testing User Survey – 2016

As part of its engagement in the global MBT community Conformiq would like to raise awareness about the MBT User Survey 2016 which is conducted by an independent group (Robert V. Binder, Carnegie-Mellon University Software Engineering Institute; Anne Kramer, sepp.med gmbh; Bruno Legeard, Smartesting & University of Franche-Comté). If you have ...

Model Based Testing in the Automotive Industry

The automotive industry is constantly facing the significant challenge of releasing cars with no software defects. It goes without saying that a software fault in the braking system, in the traction control system or in the assisted steering system can be catastrophic, while problems in non safety critical components may “only” annoy the user, yet ...

Model Driven Workflow

Recently I wrote a blog post about the action language adopted and standardized by the OMG (Object Management Group) called Action Language for fUML or Alf where I alluded about something that I call “model driven workflow” (MDW) — a modeling workflow that embraces modeling across the whole software development lifecycle integrating design, ...