public async Task postNewShift()
{
shiftController.PostNewShift(new S(9, 4, DateTime.Now, new List <U>()
{
new U(1, "Dave"), new U(2, "Steve"), new U(3, "Lisa")
}));
var shift = await shiftController.GetShift(9);
shift.Should().NotBeNull();
shift.id.Should().Be(9);
shift.GetType().Should().Be(typeof(S));
}