[Test] public void TestAssignIncomeProperty()
    {
        IIncomes[] inc = new IIncomes[1];
        inc[0] = new MockIncome();
        ITaxation taxation = new MockBaseTaxation();

        taxation.Incomes = inc;
        Assert.AreEqual(inc, taxation.Incomes, "Not same object");
    }
    public void TestRetrieveIncomeProperty()
    {
        ITaxation taxation = new MockBaseTaxation();

        IIncomes[] inc = taxation.Incomes;
    }