Java Projects - Second Edition

Refactoring the test

Now that we have discussed what a good unit test is, let's improve our test. The first thing is to move the supporting classes to separate files. We will create ArrayListSortable:

package packt.java189fundamentals.ch03.main.bubble.simple;

import packt.java189fundamentals.ch03.Sortable;

import java.util.ArrayList;

public class ArrayListSortable implements Sortable {
    final private ArrayList actualNames;

    ArrayListSortable(ArrayList actualNames) {
        this.actualNames = actualNames;
    }

    @Override
    public Object get(int i) {
        return actualNames.get(i);
    }

    @Override
    public int size() {
        return actualNames.size();
    }
}

This class encapsulates ArrayList and then implements the gets and size methods to ArrayList access. ArrayList itself ...