Pragmatic Unit Testing in Java with JUnit, 3rd Edition

Chapter 11Advancing with Test-Driven Development (TDD)

You’re now armed with what you’ll need to know about straight-up unit testing in Java. In this part, you’ll learn about three significant topics:

• Using TDD to flip the concept of unit testing from test-after to test-driven
• Considerations for unit testing within a project team
• Using AI tooling to drive development, assisted by unit tests

You’ll start with a meaty example of how to practice TDD.

It’s hard to write unit tests for some code. Such “difficult” code grows partly from a lack of interest in unit testing. In contrast, the more you consider how to unit test the code you write, the more you’ll end up with easier-to-test code. (“Well, duh!” responds our reluctant unit tester Joe.)

With ...