JUnit 4 Expected Exception type

Question

I am trying to do a JUnit test on code that someone else has written, but I cannot figure out how to test for the exception, because the exception seems to lack a type.

Answer 1

I wouldn't throw an Exception if the gold isn't greater than or equal to zero. I would throw an IllegalArgumentException. It certainly sounds like it's illegal your Pirate to have a negative amount of gold.

public Pirate(String name, int initialGold) {
    if(initialGold < 0)
        throw new IllegalArgumentException("Init Gold must be >= 0");

Then in your JUnit test case, expect the IllegalArgumentException.

@Test(expected=IllegalArgumentException.class)
public static void exceptionTest() {