
Often, your new code replaces an older system whose data must be migrated to the new system. This isn't a process that gets a lot of thought, but it probably should. In this article, he shows how an iterative, test-driven approach can save you a lot of headaches later.
One nice feature in JUnit 4 is that of Parameterized Tests, which let you do data-driven testing in JUnit with a minimum of fuss. It's easy enough, and very useful, to set up basic data-driven tests by defining your test data directly in your Java class. But what if you want to get your test data from somewhere else? In this article, we look at how to obtain test data from an Excel spreadsheet.
Build Server Information radiators are an excellent, easy-to-implement way of getting people to pay attention to broken builds. But it pays to tailor them to your exact needs. This article is a short case study of how easy it is to set up an effective information radiator if you put your mind to it.

How to set up a Continuous Integration build job to compile and test your Grails application in Hudson, for automated continuous integration....
I don't unit test my classes. I don't even unit-test my methods. You'll be hard-put to find the word "test" in my source code. And I never, ever create a new JUnit Test Case Eclipse.

I prefer to test how my application behaves. And I find it makes a huge difference.
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