public void CostByType()
{
//arrange
_repo.Seed();
Outing GolfDay = new Outing(EventType.Golf, 20, new DateTime(2019, 08, 14), 20d, 400d);
Outing GolfNight = new Outing(EventType.Golf, 10, new DateTime(2019, 08, 15), 20d, 200d);
//act
_repo.AddNewOuting(GolfDay);
_repo.AddNewOuting(GolfNight);
double golfTotal = _repo.CostByType(EventType.Golf);
//assert
Assert.AreEqual(600d, golfTotal);
}