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Tag Archives: JUnit

Testing with files and directories in JUnit with @Rule

Testing with Files and directories in JUnit is easy thanks to TemporaryFolder @Rule. In JUnit rules (@Rule) can be used as an alternative or an addition to fixture setup and cleanup methods (org.junit.Before, org.junit.After, org.junit.BeforeClass, and org.junit.AfterClass), but they are more powerful, and can be more easily shared between projects and classes. The code to be tested   public void ...

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Unit Testing exercise with FizzBuzz and JUnitParams

I sometimes use FizzBuzz to demonstrate the basics of unit testing to newbies. Although FizzBuzz is really simple problem, it can also be used to demonstrate more advanced unit testing techniques like implementing parametrized tests. One of the possible solutions to FizzBuzz is:             public class FizzBuzz { private static final int THREE = 3; ...

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Lightweight Integration Tests for Eclipse Extensions

Recently I introduced a little helper for Eclipse extension point evaluation. The auxiliary strives to reduce boilerplate code for common programming steps, while increasing development guidance and readability at the same time. This post is the promised follow-up that shows how to combine the utility with an AssertJ custom assert to write lightweight integration tests for Eclipse extensions. Eclipse Extensions ...

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Quo Vadis JUnit

For me JUnit is the most important library of the Java universe. But I think a new version of it is overdue. With it’s approach of having a method definition as a test definition JUnit is mighty inflexible and needs various hacks … sorry features, to do what you really should be able to do with basic (Java 8) language ...

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JUnit in a Nutshell: Yet Another JUnit Tutorial

Why Another JUnit Tutorial? JUnit seems to be the most popular testing tool for developers within the Java world. So it is no wonder that there have been written some good books about this topic. But I still meet quite often programmers, who at most have a vague understanding of the tool and its proper usage. Hence I had the ...

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Tips for (unit testing) JavaBeans

If you’re writing Java code chances are you’re writing at least a few classes that adhere to the JavaBean conventions, i.e., classes that have private properties with public getter and setter methods, contain a no-arguments constructor, are serializable, and comply with the Equals and HashCode contract. And on top of that you’ll probably also throw in a useful toString() implementation. ...

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How to run junit tests inside the android project

Hi there! Today i’m gonna show you how to create and run junit tests inside your android project without creating a separated test project. With those tests we will rapidly be able to automate and test the app’s logic and some simple UI behaviors. The example below is very straightforward and much more intuitive than other approaches i saw out ...

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