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Software development: Faster mutation testing with Stryker

Posted 24 Sep 2022
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0 to 1 years
Full-time / part-time
Full-time
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Salary
€1,000 per month
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Required language
Dutch (Fluent)

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Master's thesis: Faster mutation testing with Stryker

Veenendaal

Fulltime

Mutation testing is a way to measure the effectiveness of unit tests. Stryker Mutator, an open-source mutation testing framework by Info Support is allready fast. Find areas where improvements can still be made to speed the mutation testing up.

Required interest(s)

  • Software Architecture
  • Software Development Methodologies
  • Open Source

What do you get

  • A challenging assignment within a practical environment
  • € 1000 compensation, € 500 + lease car or € 600 + living space
  • Professional guidance
  • Courses aimed at your graduation period
  • Support from our academic Research center at your disposal
  • Two vacation days per month

What you will do

  • 65% Research
  • 10% Analyze, design, realize
  • 25% Documentation

A mutation testing framework will measure the effectiveness of unit tests by inserting mutants (bugs) inside your production code and running the (unit) tests. If the tests pass for a given mutant, then there might be a missing test case. The mutant ‘survived’ in that case. If at least one of the tests fails, then the mutant is ‘killed’. The percentage of killed mutants is referred to as the ‘mutation score’ and is a metric for test effectiveness.

We at Info Support are maintaining Stryker Mutator, an open-source mutation testing framework. It consists of 3 flavors: Stryker.NET (C#), Stryker4s (Scala), and Stryker (for JavaScript and friends). For more info, see https://stryker-mutator.io.

There are many ways of introducing mutants into the source code. Mutating sources statement by statement is a logical choice, but not good for performance as the codebase needs to be recompiled or reloaded after every mutation. Mutation switching can provide a solution to speed up the process. With mutation switching all mutants are compiled into the codebase at once and switched on one-by-one at runtime. In the case of Stryker.NET and Styker4s this has resulted in a significant performance boost.

We would like to increase the performance of Stryker even further. Research will focus on finding areas where improvements can be made and/or developing methodologies for speeding up mutation testing.

About Info Support Research Center

We anticipate on upcoming and future challenges and ensures our engineers develop cutting-edge solutions based on the latest scientific insights. Our research community proactively tackles emerging technologies. We do this in cooperation with renowned scientists, making sure that research teams are positioned and embedded throughout our organisation and our community, so that their insights are directly applied to our business. We truly believe in sharing knowledge, so we want to do this without any restrictions.

Maatwerksoftware bouwen waar miljoenen mensen dagelijks gebruik van maken. Dat is ons werk. Voor grote gerenommeerde klanten in Nederland en België. Betrouwbaar, schaalbaar en onderhoudbaar. Wij gaan voor software oplossingen van zeer hoge kwaliteit. Binnen de afgesproken tijd en het budget.
Door samen continu te vernieuwen helpen we klanten en de wereld significant vooruit. Onze ambitie en drive maakt ons vastberaden om topkwaliteit te leveren en voorop te lopen. Can you do IT?

IT
Veenendaal
Active in 2 countries
500 employees
90% men - 10% women
Average age is 30 years

What employees are saying

Daniel

IT Consultant

Mijn technisch begeleider tijdens mijn afstudeerperiode is een voorbeeld voor mij. Hij heeft twee jaar meer ervaring, maar is nu teamlead geworden. Dat zou voor mij een mooi streven zijn. In mijn ambitiegesprek heb ik het aangegeven en we gaan er ook echt naartoe werken. Ik kijk ernaar uit!

Daniel

IT Consultant

Daniel

Mijn technisch begeleider tijdens mijn afstuderen bij Info Support is een voorbeeld voor mij. Hij heeft twee jaar meer ervaring en is nu teamlead geworden. Dat zou voor mij een mooi streven zijn. Ik heb het aangegeven tijdens mijn ambitiegesprek en we gaan er naartoe werken. Ik kijk ernaar uit!