public void DatesInRangeTest()
{
// Arrange
var numOfDays = 12;
var start = DateTime.Today;
var end = start.AddDays(numOfDays);
// Act
List <DateTime> dates = new List <DateTime>(_sut.DatesInRange(start, end));
// Assert
Assert.AreEqual(numOfDays + 1, dates.Count);
}