List/Grid Tag Archives: JUnit

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Running JUnit Tests Repeatedly Without Loops

Recently I came across a problem where I had to write tests for a method that calculates randomly distributed values within a certain range of possibilities 1. More precisely if you ...
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JUnit: Naming Individual Test Cases in a Parameterized Test

A couple of years ago I wrote about JUnit Parameterized Tests. One of the things I didn’t like about them was that JUnit named the invidividual test cases using numbers, so if ...
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JUnit and EasyMock cooperation

Developers always need to take care about code which they produced. They should be ensured that code works properly after a new feature was implemented or some bug was fixed. That’s ...
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Testing Expected Exceptions with JUnit Rules

This post shows how to test for expected exceptions using JUnit. Let’s start with the following class that we wish to test:                   public ...
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Don’t rely on unit tests alone

When you are building a complex system, barely testing components in isolation is not enough. It’s crucial, but not enough. Imagine a car factory that manufactures and imports ...
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Hamcrest Containing Matchers

The Hamcrest 1.3 Javadoc documentation for the Matchers class adds more documentation for several of that class’s methods than were available in Hamcrest 1.2. For example, the ...
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JUnit test method ordering

Junit until version 4.10 uses the order of test methods in a test class as returned by the reflection API as the order of test method execution - Class.getMethods(). To quote the Javadoc ...
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Using Builder Pattern in JUnit tests

This is not intended to be a heavily technical post. The goal of this post is to give you some guidelines to make your JUnit testing life more easy, to enable you to write complex scenarios ...
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Working Efficiently with JUnit in Eclipse

Recently I was dragged into a discussion1 with some test infected2 fellows about how we use JUnit within the Eclipse IDE. Surprisingly the conversation brought up some ‘tips and tricks’ ...
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JUnit4 Parameterized and Theories Examples

I always relied on TestNG to pass parameters to test methods in order to give a bit of flexibility to my tests or suites. However, the same flexibility can be achieved using JUnit4. To ...
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