May 28, 2009
If you’ve written enough JUnit 4 tests, then you should be familiar with code that looks like:
Now, how often have you wished it were possible to simply go straight to
@Test, do not pass
setUp(), do not have to
So I came up with
MagicTest, a parameterized base class for JUnit 4 tests that’ll let us do just that. Read the rest of this entry »
April 15, 2009
The following code is provided for educational/illustrative purposes only.
This is probably just a clever hack. This is not kosher. To all students of the Java language, please do not start using this in your day-to-day code. Let me be the first to admit that I haven’t used this extensively and I wouldn’t recommend using it for production.
Disclaimers aside, I won’t give any more background into Java generics. For those in need of an introduction, Angelika Langer’s Java Generics FAQ explains a lot of things with more clarity and depth than I ever could.
The basic problem is, given a generic class, we would like to determine the type parameter to that class at run-time..
I’ve found myself needing to do this more than once. The simplest example I can contrive is one when we want the
Base class to perform run-time type-checking of some input parameter. Read the rest of this entry »