igelArgernTester.jar contains unit tests that can be run against any class that implements IIGelGame.

To run the tests, got to the command line and run

java -cp igelArgernTester.jar:out IgelGameTestRunner nameOfIgelGameImplementation

where

"out" is the root of the student's build path (i.e., the root of where the class files are), and

"nameOfIgelGameImplementation" is the full, *package-qualified* name of the class that implements IIgelGame.