Skip to main content

About me

My name is Lukasz Roslonek and I'm a dedicated Test Engineer and Developer. For the last couple of years I've worked in various roles in the Quality Assurance field, with main focus on implementing complex test automation frameworks and designing software testing strategies in development pipelines.  

I specialize in distributed architecture and microservices, REST API test automation and JVM-based languages. I advocate for technical approach to software testing and lean engineering process, built around automated quality assurance.

In case of any questions, work proposals or just if you want to stay in touch, feel free to follow / add me on:


After hours: guitar nerd, book lover and amateur runner.

Popular posts from this blog

Testing Asynchronous APIs: Awaitility tutorial

Despite the growing popularity of test automation, most of it is still likely to be done on the frontend side of application. While GUI is a single layer that puts all the pieces together, focusing your automation efforts on the backend side requires dealing with distributed calls, concurrency, handling their diversity and integration. Backend test automation is especially popular in the microservices architecture, with testing REST API’s. I’ve noticed that dealing with asynchronous events is particularly considered as challenging. In this article I want to cover basic usage of Awaitility – simple java library for testing asynchronous events. All the code examples are written in groovy and our REST client is Rest-Assured. Synchronous vs Asynchronous  In simple words, synchronous communication is when the API calls are dependent and their order matters, while asynchronous communication is when the API calls are independent. Quoting Apigee definition: Synchronous...
Read more

REST API mocking with Wiremock

Probably every developer or tester have used mocks at least once in their daily professional work. Functionality mocking is an excellent way to improve development process of integrated systems production, or testing heavy dependent application functionalities. With the growth of popularity of REST webservices, API mocking is becoming hot topic. In this article I would like to introduce a simple getting-started tutorial of setting basic standalone REST API mock server with Wiremock on your local machine. Wiremock is a simple library written in Java for mocking web services. Installation  To run standalone wiremock server, download jar from here and run: $ java -jar wiremock-1.55-standalone.jar you should see: This means that wiremock has started an empty mock server on localhost on port 8080. After you navigate to http://localhost:8080/__admin/ in your browser, you should get empty mappings entity: You can also change default port by adding --port...
Read more

Rerun Flaky Tests – Spock Retry

One question I get asked a lot is how you can automatically rerun your test on failure. This is a typical case for heavy, functional test scenarios, which are often flaky. While test flakiness and its management is crucial and extensive matter itself, in this post I want to give a shout to the extremely simple yet useful library: Spock-Retry. It introduce possibility to create retry policies for Spock tests, without any additional custom-rules implementation – just one annotation. If you are not a fan of Spock testing framework and you prefer JUnit – stay tuned! I will post analogous bit about rerunning JUnit tests soon. Instalation  If you are an maven user, add following dependency: <dependency>       < groupId > com.anotherchrisberry < /groupId >       < artifactId > spock-retry < /artifactId >       < version > 0.6.2 < /version >      ...
Read more