public void ShouldThrowWhenDaysOfWeekGreaterThan127Test()
 {
     Shouldly.ShouldThrowExtensions.ShouldThrow <ArgumentException>(() =>
     {
         var sut = new EveryNthWeekOnSpecifiedDaysStrategy((DayOfWeekFlags)128);
     });
 }
 public void ShouldThrowWhenDaysOfWeekLessThan1Test()
 {
     Shouldly.ShouldThrowExtensions.ShouldThrow <ArgumentException>(() =>
     {
         var sut = new EveryNthWeekOnSpecifiedDaysStrategy(0);
     });
 }