#77 - 15.06.2022
#77 Tester as a developer – practical use of basics of development and design patterns in tests (python)
The topic of this presentation will be to establish an answer for a question about why automation tester is also a developer. The meeting will be a great chance to meet good practices and deseign patterns on real cases from automation tester work.
For over 10 years in testing. Mostly in test automation (web and mobile), creation of own tools for test support. In his free time responsible for the development of his own web/mobile apps.
#76 - 11.05.2022
#76 Design patterns and anti-patterns in web application automation testing
As the level of complexity of the source code and the software itself increases, so does the level of complexity of the software tests. Test automation is an important and increasingly used form of supporting the testing process. The most important element in building the test automation process is the approach itself and the adopted general concepts. Design patterns are universal, proven in practice solutions to often repetitive design problems. In the presentation, I will tell you why it is worth basing the web application test automation process on proven and widely used design patterns. I will tell you about their concept, application, strengths and weaknesses. I will also present anti-patterns, which, unfortunately, are equally often used on the wide market. The presentation will be based on my over 10 years of experience in writing automated tests, managing test automation teams and managing test departments.
My name is Tomasz Stelmach. For over ten years now, I am professionally responsible for testing, securing and maintaining development quality, planning, development and maintaining of Tests Automation process in big organization. Lately I'm involved mostly in IT architecture related issues and DevOps/TestOps - strictly connected with maintaining development quality. My specialities are automation testing of web applications and creating widely understood processes of automation and robotization. I am also a founder of training company "Od laika do Automatyka" https://odlaikadoautomatyka.pl/.
#75 - 13.04.2022 18:00
#75 What you can expect from Spock 2
Spring 2021 – long awaited – Spock 2.0 has been finally released. Heavily rewritten to leverage JUnit Platform (a crucial part of JUnit 5) is ready for even better testing in your projects.
However, what about the support for Groovy 3 and Java 14+? Is Spock compatible with a brand new Groovy 4 and Java 17+? Could the parametrized tests be even better? How problematic will it be to migrate existing tests from Spock 1.3 (especially those using JUnit 4’s rules)? What other new features and breaking changes are expected in 2.x?
During this talk, I will summarize over 2 years of development, explaining if/how it impacts the status quo (Spock 2 vs JUnit Jupiter 5) presented by me three years ago.
An experienced architect aiming for high quality solutions. Very engaged in evangelising Software Craftsmanship, Clean Code and Test-Driven Development as a conference speaker and trainer. An expert in deployment automation with Continuous Delivery and Continuous Inspection of Code Quality. An enthusiast of Reactive Systems and broadly defined concurrency. Besides, an open source author and a contributor, a (minor) Spock committer and an occasional blogger (https://blog.solidsoft.pl/).
#74 - 16.02.2022
#74 Hazelcast 5 – Hands-On
In this presentation you will learn what’s Hazelcast place from an architectural point of view and you will get to know Hazelcast from the developer point of view during a live-coding session.
Grzegorz Piwowarek is a senior engineer at Hazelcast, runs training courses and blogs at 4comprehension.com. He is interested in distributed systems, system performance, and architecture. There are rumors that he only exists at compile time.
#73 - 12.01.2022 18:00
#73 Testing Kotlin Coroutines
Kotlin Coroutines introduce powerful testing tools that let us control time. This gives us tools, for much better testing than before. In this presentation, we will see, how to test different cases both in Android and in the backend. How to make sure that two processes run concurrently, how to check the time dependencies, and how to use JUnit rules to make all that testing effortless.
Marcin Moskała is an experienced developer and Kotlin trainer. He is the founder of the Kt. Academy, an official JetBrains partner for Kotlin trainings, author of the books Effective Kotlin and Android Development with Kotlin. He is also the main author of the biggest medium publication about Kotlin and a speaker invited to many programming conferences.
#72 - 15.12.2021 18:00
#72 Bare metal Java
Java, or JVM, has well-deserved fame as a hardware-unfriendly platform, and thus nobody sane will build database systems or solutions where “mechanical sympathy” is crucial. using Java, except Apache Kafka, Elastic, Cassandra and Neo4j ;).
Garbage collector, speculating JIT, lack of control over “object layout”, terrible support (mainly due to lack of abstraction) for functions of modern processors and operating systems.
And also JNI (who was there, I know what I’m talking about). Complex, slow, no major update since the day of release.
But things are going to change. With Project Panama and JEPs like foreign memory API. There is a promise to make things simple, fast and safe. This talk will take a look at the state of Project Panama, focusing on the foreign linker and foreign memory API, our new interface to the C world. Of course, you can expect running examples, core dumps, segfaults and other fancy things.
I will show how to call C code (from POSIX spec) from Java, and calling Java code from C. We will also discuss the topic of foreign memory as these specs are tightly coupled together.
For more than 20 years in the IT industry, as a database administrator, programmer, architect, manager and "onsite disaster engineer". At the moment, working at Neo4j as performance engineer, enjoying the way of code, and exploring dungeons of JVM and OS, after few years as chief architect in SaaS business and teach lead in Allegro.pl. I took part in small, medium and large projects nonsense, under the principles of "Waterfall", Agile and in the absence of any methodologies, always with the same effect. What led me to the conclusion that no matter what you do, as long how you do it well, in the simplest possible way and use appropriate tools that do the work for you. In the meantime, I fell in love in the ideas of TDD and Software Craftsmanship, to the limits exploring beautiful in its simplicity ideas as REST and NoSQL, only to abandon them to explore the secrets of "systems thinking" and admire the strength that brings "metaphor" and discover that we are all objects in an eternal virtual machine. Humble follower of the church of JVM, bytecode and JIT researcher, exploring all sorts of parsers, interpreters and compilers. From time to time you can hear my low-quality jokes about architecture conferences in Poland. I am also author of a blog on http://geekyprimitives.wordpress.com/ and self-proclaimed dictator in the program committee at SegFault ,CoreDump, 4Developers and JDD conferences.
#71 - 06.10.2021
#71 Soft skills for Storming Trooper
It was supposed to be beautiful… We used a few hundred sticky notes, we took a picture / screenshot of them and posted them on twitter and linkedin, we gave each other high five but after a year, our microservices and lambdas ended up in bolognese sauce…
What went wrong? How could we overlook Single Source of Truth again, and post a dozen Single Points of Failure?
The most difficult skills in programming are soft skills.
During the presentation you will learn:
– how to ask questions that do not suggest an answer
– how to formulate typical technical questions so that they address business problems
– how to adapt your interface to the interface of a person with a completely different history of education
– how to recognize the cognitive preferences of interlocutors and adjust to them
Sławomir is the owner of a training and consulting company, Bottega IT Minds, associating 60 technical experts. During 17 years of work in the IT industry, he was a programmer, architect, team leader, mentor, and trainer. On a daily basis, he integrates Domain-Driven Design, patterns, and styles of architectural, agile manufacturing processes and common sense. He applies the overarching principle: recognize the problem class and select the appropriate tool class for it.
#70 - 30.06.2021
#70 Tracing Issues in Your Application
Imagine that you’re receiving a support ticket that your application is not working fine. You read the attached stack trace and now it’s time to solve the mystery – what did the user do that led to throwing of this exception? Is it possible to find all the logs from all the applications that correspond to this user’s business operation?
What if the user is complaining that the system is slow? How can you decide which concrete operation is the culprit? Is there any way to visualize the latency?
p dive into application observability using distributed tracing, metrics, and correlated logs via Spring Cloud Sleuth, Tanzu Observability, OpenZipkin, OpenTelemetry, and more!
The presentation will consist of some theory but there’ll also be live coding and demos.
He can be called not only a programmer but also an author. Father of Mockito Instant and Mockito Cookbook. Creator of the Hands-On Guide to Spring Cloud Contract course and co-creator of the Applied Continuous Delivery Live Lessons course. Leaders of Spring Cloud Sleuth, Spring Cloud Contract, and Cloud Pipelines projects at VMware. Co-founder of the Warsaw Groovy User Group, Warsaw Cloud Native Meetup, and the DiverseIT initiative.
#69 - 26.05.2021
#69 You have no chance. You’ll lose with OSINT
During the lecture, Piotr Konieczny will show techniques for obtaining information about people, companies and servers based on generally available (which does not mean always publicly available) sources on the Internet. They will open the hem of the so-called White Intelligence and will show you in practice a technical reconnaissance.
He will also reveal several OSINT tools, demonstrating how with their help anyone can obtain information about the IT infrastructure of any company.
Finally, we will de-anonymize and strip the privacy of one of the famous Polish spies. And if there is enough time, we may even track the spy satellite and look at something that – according to the lawyer’s advice – our speaker cannot describe here.
A security expert who has been employed by Polish and foreign companies for 14 years to break into their networks and steal their data. Multiple winner of awards for the best lectures at the largest Polish conferences devoted to IT security, as well as the winner of the prestigious Digital Shapers 2018 award of Forbes and Business Insider magazines. Graduate of Glasgow Caledonian University and founder of Niebezpiecznik.pl, the largest website dedicated to computer security in Poland. When he is not writing articles, he manages a team that performs audits and penetration tests of ICT systems and conducts highly technical training for administrators and programmers. The author of the lecture "How not to get hacked?", Intended for everyone who uses computers and the Internet in their private or professional life.
#68 - 28.04.2021
#68 Architecture and Architect AD 2021
We often hear that nothing new has been invented in IT since the 1970s. And we must admit that nowadays solutions are very often based on well-known concepts. We can, however, ask whether the same state of affairs also applies to the way architects work and how we understand what software architecture is. We will focus on answering those questions during the presentation. Also, we will talk about the architect’s role in agile and how architecture faces the ubiquitous variability of requirements.
"He has been passionate about programming for almost 30 years. He started as a child, implementing in Fortran 77 simple programs to help him in his lessons - such as addition with carryover ;) Over 16 years ago his passion turned into a profession with which he is still involved. Initially as a programmer, then designer, architect, team leader, and manager, up to a trainer, consultant, and entrepreneur developing own company and DevSkiller.com product. For years he is focusing on the distributed systems architecture and tuning of software development processes, trying to do everything more efficiently and effectively. He supports people with strategic consulting and IT processes audits."
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