Best way to automagically migrate tests from JUnit 3 to JUnit 4?

Question

I have a bunch of JUnit 3 classes which extend TestCase and would like to automatically migrate them to be JUnit4 tests with annotations such as @Before,

Answer 1

If you want to automatically convert your Junit3 tests to Junit4, you can use the Vogella's Codemodify tool, available at this address:

• https://github.com/vogellacompany/codemodify

TL;DR install and use it as follows:

• get Eclipse if you don't use it already (it's open source)
• From menu: Help > Install new software, then paste the update site http://dl.bintray.com/vogellacompany/junit-4-tools/ in the Work With field
• Finish the installation, and restart if needed.

Then, you can right-click any Junit3 test class, and select the Source > Convert to JUnit4 menu entry to convert your class to JUnit4.

The tool will automagically remove TestCase parent, outdated imports, add @Before, @After, @Test annotations, etc.