public void NumberOfDatesGeneratedInAYearAre12()
        {
            var options = new Options {
                StartDate = "201901"
            };
            var generator = new SalaryGenerator(options);

            Assert.AreEqual(12, generator.GetSalaries().Count());
        }
        public void StartAndEndDatesSet()
        {
            var startDate = new DateTime(2019, 01, 01);
            var endDate   = new DateTime(2019, 12, 31);
            var options   = new Options {
                StartDate = "201901"
            };
            var generator = new SalaryGenerator(options);

            Assert.AreEqual(startDate, generator.StartDate);
            Assert.AreEqual(endDate, generator.EndDate);
        }