Java Lunch N Learn - Start Hunting The Bugs - Mutation Testing JUnit

We're excited to be able to welcome Sven Ruppert from JFrog as our speaker for October 20th. Sven is working as Developer Advocate for Jfrog and coding Java since 1996 in industrial projects. He was working over 15 years as a consultant worldwide in industries like Automotive, Space, Insurance, Banking, UN and WorldBank. He is regularly speaking at Conferences and Meetups worldwide and contributes to IT periodicals, as well as tech portals. Additional to his main topic DevSecOps he is working on Mutation Testing of Web apps and Distributed Unit Testing besides his evergreen topics Core Java and Kotlin.

JUnit is a well-known tool for Java developers in the area of TDD. Here it has become accepted, that Code Coverage can be measured. In this case we distinguish between coverage on the level of classes, methods and rows. The goal is to get the Code Coverage as high as possible on the row level, but not higher than necessary. What exactly does it mean? A Code Coverage of appr. 75% on the row level is very good and can already provide a basis. But what does this figure say? In this talk we will deal with the term Mutation Testing and show the practical ways of use. How can the coverage be defined and what can be achieved? How can it be integrated into an existing project and what should be considered while running a test?