@Before
    public void setUp() {
        this._instance = new NewYearsDay();
        this._years = new LinkedList<Integer>();
        for (int year = 1974; year < 2021; year++)
            this._years.add(year);
        this._newYearsDayUnitedStates = new HashMap<Integer, GregorianCalendar>();
        for (int year : this._years) {
            GregorianCalendar christmasDayUnitedStates = new GregorianCalendar(year, 0, 1);
            switch (year){
                case 1978:
                case 1984:
                case 1989:
                case 1995:
                case 2006:
                case 2012:
                case 2017:
                    christmasDayUnitedStates.add(GregorianCalendar.DATE, 1);
            }
            this._newYearsDayUnitedStates.put(year, christmasDayUnitedStates);
        }
    }