public void GetTimeInterval_DateEventIsGreaterThanDateNow_TotalDays() { //Arrange DateTime dateEvent = new DateTime(2020, 2, 14); DateTime dateNow = new DateTime(2020, 2, 7); //Act TimeInterval timeInterval = new TimeInterval(); TimeSpan interval = timeInterval.GetTimeInterval(dateNow, dateEvent); //Assert Assert.AreEqual(7, interval.Days); }