November 2024
Intermediate to advanced
300 pages
7h 12m
English
Content preview from Pragmatic Unit Testing in Java with JUnit, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The Costs of Maintaining Unit Tests
Refactoring—changing the implementation of a solution without changing its behavior—should not normally break tests. Here, however, you did make a behavioral change due to a deficiency in the Profile interface. Your updated design now exposes the score method’s behavior in a different manner than before, hence the broken tests. You might consider that your refactoring “pushed out a change to the interface.”
Sure, you must spend time to fix the tests. In this case, having tests in the first place enabled you to recognize and fix a faulty design.
You’ve learned throughout this book the potential benefits of unit tests:
- Releasing fewer defects
- Changing your code at will with high confidence
- Knowing exactly and rapidly ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.