public void CalculateTotalSales_ShouldReturnTeamSales()
{
//Arrange
_member1 = new Member("Smith", 100);
_member2 = new Member("Williams", 200);
_memberRepository = new MemberRepository();
//Act
_memberRepository.AddMemberToList(_member1);
_memberRepository.AddMemberToList(_member2);
var actual = _memberRepository.CalculateTeamSales();
var expected = 300m;
//Assert
Assert.AreEqual(expected, actual);
}