BDD Style Catch Exception

FooBarTest.java

import org.junit.Test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import static com.googlecode.catchexception.CatchException.caughtException;
import static com.googlecode.catchexception.apis.CatchExceptionAssertJ.then;
import static com.googlecode.catchexception.apis.CatchExceptionAssertJ.when;

public class FooBarTest {

    FooBar sut = new FooBar(); // System Under Test

    @Test
    public void shouldThrowExceptionWhenListHasTooManyElements() {

        when(sut).getMethod(listWithSize(101));

        then(caughtException()).isInstanceOf(IllegalArgumentException.class);
    }

    private ArrayList<String> listWithSize(int size) {
        return new ArrayList<String>(Arrays.asList(new String[size]));
    }

    public class FooBar {

        public int getMethod(List<String> code) throws IllegalArgumentException {

            if (code.size() > 100)
                throw new IllegalArgumentException();

            return 0;
        }
    }
}