public void ShouldSaveTheInvestment()
{
Repository chapter6InvestmentRepo = new Repository();
Investment LICInvestment = new LifeInsurance(10000);
chapter6InvestmentRepo.SaveInvestment(LICInvestment);
Assert.AreEqual(LICInvestment.GetAmount(), chapter6InvestmentRepo.GetInvestmentDetails(LICInvestment.Id).GetAmount());
}