DubJUG 253 - Managing Testing Data

Monday 27th January sees the third of Dublin Java User Groups 2025 series, hosting Dutch based Brazilian Java Champion Elias Nogueira to share two great talks to strengthen your knowledge in your Java career.

TALK ONE
Data generators in software testing play a critical role in creating realistic and diverse datasets for testing scenarios. However, they present challenges, such as ensuring data diversity, maintaining quality, facilitating validation, and ensuring long-term maintainability.

In his first talk of the evening, "DataFaker: the most powerful fake data generator library", Elias explores a library for Java and Kotlin to generate data for a stress test, or to anonymize data from production services.

TALK TWO
This presentation will show you how to manage testing data in two different ways. The first way is the creation of a Test Data Factory approach, where we will use the Factory Pattern to easily create any objects we want with understandable and reliable data. This approach will make you in control of your own data, so you can find any bug in the early stages of the SDLC and the DataFaker library will help us to generate good random data in every execution.

In a second way, we will learn and apply the Data-Driven Testing approach, where the same requirement can be applied to different sets of data, generating different results. This approach can reduce the amount of code and the execution time. With the support of JUnit 5 you will learn how to do it in 5 different ways: value source, internal method source, external method source, argument provider, and CVS source.
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WHAT ELSE
As usual, plenty of craic, networking and refreshments courtesy of partners Integral Ad Science, FINEOS, and Stackand.Co Recruitment at the super easy location tcube workspaces BANG in the middle of Dublin city centre.

Full talk details and tickets available at https://ti.to/dublin-java-user-group/2025-elias-nogueira