1. Java Unit Testing
2. A Simple Unit Test
3. Assert Methods
4. Matchers
5. Testing for Exceptions
6. Stub, Mock and Proxy Testing
7. Subclass Mock Objects
8. Mock Testing isn't Always Enough
9. IO Testing
10. Servlet Unit Testing
11. Unit Testing with Dependency Injection Containers
12. Database Unit Testing - Rollback Transactions
13. Database Unit Testing - CRUD Testing
14. Database Unit Testing - Test Data Creation
15. Running Unit Tests With Ant
16. Running Unit Tests With Maven
17. Running Unit Tests Inside IntelliJ IDEA
18. Code Coverage
19. Design for Testability
20. Test First Development

This trail is about unit testing in Java. Unit testing means testing the smaller units of your application, like classes and methods.

The reason you test your code is to prove to yourself, and perhaps to the users / clients / customers, that your code works.

Unit tests are typically automated, meaning once they are implemented, you can run them again and again. That is, your computer can run them again and again, while you do something else.

This tutorial uses JUnit to implement the unit tests. There are other unit test frameworks for Java too, like TestNG.

Feel Free to Contact Me

If you disagree with anything I write here about Java Unit Testing, or just have comments, questions, etc, feel free to send me an email. You wouldn't be the first to do so. You can find my email address on the about page.