Integration testing custom validation constraints in Jersey 2

I recently joined a team trying to switch a monolithic legacy system into set of RESTful services in Java. They…

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Parameterized JUnit tests

Sometimes you encounter a problem that just screams for using “parameterized” tests rather than copy/pasting the same method many times.…

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The Test Waste Ratio

Remember the days when bugs were just part of life? I mean a big part. If you recall those dark…

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Why shouldn’t I test private methods?

Newcomers to TDD ask some interesting questions, here’s one I was asked recently: testing private methods is bad, but why? How…

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Fast Remote Service Tests

Testing code that interacts with remote services is often pretty hard. There are a lot of tradeoffs that influence what…

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Getting started with Mocking in Java using Mockito

We all write unit tests but the challenge we face at times is that the unit under test might be…

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Write effective Unit tests

Soon or later we all experienced the comfortable feeling of test green lights, assuring a non regression after a change…

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Manual testing sinful?

One of the asides I made in “Programmers without TDD will be unemployable” which caused a bit of outrage in…

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Using Reflection for Testing

I am working on a presentation about the ‘Single Responsibility Principle’, based on my previous post. It take most of…

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