Mutation testing

Rafal Leszko is a Java developer at Google. Trainer and speaker at international conferences (Devoxx Morocco, Voxxed Days Thessaloniki). In the past he worked in a number of companies and scientific organizations: CERN, AGH University, Luxoft and more. His roles varied from a team lead, trainer, PhD researcher to developer, but one thing remains unchanged: he loves to be as active as possible, looks for challenges and has a lot of creative ideas (he was the one to introduce the Luxoft Lunch & Learn initiative).

How well tested is your system? How do you measure it? Code coverage can give you the answer, however can we trust our unit tests? Trust me or not, but I used to work for the investment banking industry in a big project where a lot of unit tests had no assertions (!). And yes… the coverage was very high.

Mutation testing is a method to check the quality of your unit tests and show more reasonable code coverage reports. In this session I will describe the idea of mutation testing and show a live example with the use of PIT Mutation Testing framework.

Continuous Delivery: Jenkins, Docker and Spring Boot

Rafał Leszko is a Java developer at Google. Trainer and speaker at international conferences (Devoxx Morocco, Voxxed Days Thessaloniki). In the past he worked in a number of companies and scientific organizations: CERN, AGH University, Luxoft and more. His roles varied from a team lead, trainer, PhD researcher to developer, but one thing remains unchanged: he loves to be as active as possible, looks for challenges and has a lot of creative ideas (he was the one to introduce the Luxoft Lunch & Learn initiative).

In this 2 hours session we will have a practical look at the Continuous Delivery process step by step. Starting by a quick theoretical introduction to Jenkins, Docker and Spring Boot, we will then build a complete release pipeline from scratch.

Adam Bien is working as freelancer with Java since JDK 1.0, with Servlets/EJB since 1.0 and before the advent of J2EE in several large-scale applications. He is an architect and developer (with usually 20/80 distribution) in Java (SE / EE / FX) projects.

He wrote several books about JavaFX, J2EE, and Java EE, he is the author of Real World Java EE Patterns—Rethinking Best Practices and Real World Java EE Night Hacks—Dissecting the Business Tier. He is writing books and articles during his travels and sometimes even unproductive meetings.

Adam Bien is also a Java Champion, NetBeans Dream Team Founding Member, Oracle ACE Director, Java Developer of the Year 2010 and he was chosen by attendees of his sessions as JavaOne 2009 and double 2011, 2012, 2014 and triple 2013 Rock Star.