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JUnit 5 – Parameterized Tests

JUnit 5 is pretty impressive, particularly when you look under the covers, at the extension model and the architecture. But on the surface, where tests are written, the development is more evolutionary than revolutionary – is there no killer feature over JUnit 4? Fortunately, there is (at least) one: parameterized tests. JUnit 5 has native support for parameterizing test methods ...

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Parsing in Java: all the tools and libraries you can use

If you need to parse a language, or document, from Java there are fundamentally three ways to solve the problem: use an existing library supporting that specific language: for example a library to parse XML building your own custom parser by hand a tool or library to generate a parser: for example ANTLR, that you can use to build parsers for ...

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Defining “Scaling” Agile, Part 3: Creating Agile Product Development Capabilities

In the “Scaling” Agile: Part 1, I wrote about cross-functional collaborative teams. The cross-functional collaborative feature team is the basis for “scaling” agile. In “Scaling” Agile, Part 2, I wrote about programs. I realized I need another part before my original part 3 :-). This new part 3 is about creating agile product development capabilities. In Agile and Lean Program ...

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The use of proxy indicators in service management

Operating any non-trivial IT-service is a complex exercise. There are multiple aspects one needs to bear in mind while building a good operations team. One of such aspects is transparency in the service level quality. In order to avoid confusion and blame games, every good operations team has agreed upon certain quality level the service operated must be matching. The ...

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“Architect” Should Be a Role, Not a Position

What happens when a senior developer becomes…more senior? It often happens that they get promoted to “architect”. Sometimes an architect doesn’t have to have been a developer, if they see “the bigger picture”. In the end, there’s often a person that holds the position of “architect”; a person who makes decisions about the architecture of the system or systems being ...

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Why Do You Contribute to Open Source?

You probably remember my half-a-year-old article: Why Don’t You Contribute to Open Source?. I said there that if you don’t have your own OSS projects or don’t give anything back to those you’re using—something is wrong with you. Now I’m talking to those who actually do contribute without demanding anything back—guys, you’re doing it wrong!           ...

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