public void TestYearInvalid2()
        {
            Books365.BLL.Validator v = new Books365.BLL.Validator();
            TextBox testYearBox      = new TextBox();

            testYearBox.Text = "2100";
            Assert.False(v.YearIsValid(testYearBox));
        }
        public void TestYearValid()
        {
            Books365.BLL.Validator v = new Books365.BLL.Validator();
            TextBox testYearBox      = new TextBox();

            testYearBox.Text = "1994";
            Assert.True(v.YearIsValid(testYearBox));
        }