Java unit testing sucks!!!
There, I said it.
Come on, it does. I know, 8 years ago, JUnit was the bees knees. But let’s face it: when you’re working on a project, you’re behind schedule for whatever reason, and you have a deadline looming, where’s the first place that you cut corners?
Unit tests. Always.
Why?
- Lack of perceived value of testing (in other words: I see the happy path works so what’s your big problem?)
- No one is going to ever touch this code again after this release
- Java is just difficult to test
Let’s talk about these….
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I know, I know. Java. Blech!
But if you have to work in Java, instead of something more elegant like Ruby, wouldn’t you like some of the same awesome mocking power that you have come to know and love in Java? Yeah, me too.
Toby DiPasquale turned me on to jmockit. It’s a little framework that provide RSpec-like mocking in Java. To those familiar with RSpec: jmockit allows developers to mock constructors as well as individual method on live objects. It accomplishes this courtesy of the java.lang.instrument package that was added in Java 1.5.
I was curious to see if it is possible to mock boot classloader loaded classes (i.e., java.lang.Integer, etc.). After a few minutes of tinkering, I found a way but it’s none to pleasant…
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