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Tag Archives: Testing

Three Reasons Why We Should Not Use Inheritance In Our Tests

When we write automated tests (either unit or integration tests) for our application, we should notice pretty soon that Many test cases use the same configuration which creates duplicate code. Building objects used in our tests creates duplicates code. Writing assertions creates duplicate code. The first thing that comes to mind is to eliminate the duplicate code. As we know, ...

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Spring test with thymeleaf for views


I am a recent convert to thymeleaf for view templating in Spring based web applications, preferring it over jsp’s. All the arguments that thymeleaf documentation makes on why thymeleaf over jsp holds water and I am definitely sold. One of the big reasons for me, apart from being able to preview the template, is the way the view is rendered ...

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Yet another way to handle exceptions in JUnit: catch-exception

There are many ways of handling exceptions in JUnit (3 ways of handling exceptions in JUnit. Which one to choose?, JUnit ExpectedException rule: beyond basics). In this post I will introduce catch-exception library that I was recommended to give a try. In short, catch-exceptions is a library that catches exceptions in a single line of code and makes them available ...

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A Docker Maven Plugin for Integration Testing

What is Docker? Docker is the buzzword that is taking the DevOps world. If you don’t know yet what is Docker, be warned, you will find yourself using it one way or another very soon. The rest of this post assumes some basic understanding of Docker, but if you are not familiar with it now, I’m sure you will come ...

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How (NOT TO) measure latency

Latency is defined as time interval between the stimulation and response and is a value which is of importance in many computer systems (financial systems, games, websites, etc). Hence we – as computer engineers – want to specify some upper bounds / worst case scenarios for the systems we build. How can we do this? The days of counting cycles ...

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Are integration tests worth the hassle?

Whether or not you write integration tests can be a religious argument: either you believe in them or you don’t. What we even mean by integration tests can lead to an endless semantic argument. What do you mean? Unit tests are easy to define they test a single unit: a single class, a single method, make a single assertion on the behaviour ...

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What are Mockito Extra Interfaces?

Mockito is my favored little helper if it comes down to write light weight JUnit tests. It is very useful to replace the ‘real’ dependencies of a unit under test easily by mocks if necessary. In particular when working on the borderline to framework APIs such dependencies can otherwise be very expensive to setup. But sometimes the situation is a ...

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JUnit ExpectedException rule: beyond basics

There are different ways of handling exceptions in JUnit tests. As I wrote in one of my previous posts, my preferable way is using org.junit.rules.ExpectedException rule. Basically, rules are used as an alternative (or an addition) to methods annotated with org.junit.Before, org.junit.After, org.junit.BeforeClass, or org.junit.AfterClass, but they are more powerful, and more easily shared between projects and classes. In this ...

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