public InvestmentPerformance GetInvestmentDetail(int investmentId)
{
const string sql = @"SELECT sp.[Id],
s.[Name],
sp.Shares,
sp.PurchaseCostPerShare,
sp.Shares * s.Price As CurrentValue,
s.Price As CurrentPrice,
sp.PurchaseDate,
(sp.Shares * s.Price) - (sp.Shares * sp.PurchaseCostPerShare) As NetGain
FROM [Investment].[dbo].[StockPurchase] sp
INNER JOIN [Investment].[dbo].[Stock] s on sp.StockId = s.Id
WHERE sp.[Id] = @InvestmentId";
StockPurchase stockPurchase;
using (var connection = new SqlConnection(_configuration["ConnectionStrings:DefaultConnection"]))
{
stockPurchase = connection.QuerySingleOrDefault <StockPurchase>(sql, new { InvestmentId = investmentId });
}
InvestmentPerformance investmentPerformance = null;
if (stockPurchase != null)
{
investmentPerformance = new InvestmentPerformance
{
Id = stockPurchase.Id,
Name = stockPurchase.Name,
Shares = stockPurchase.Shares,
CostBasisPerShare = stockPurchase.PurchaseCostPerShare,
CurrentValue = stockPurchase.CurrentValue,
CurrentPrice = stockPurchase.CurrentPrice,
Term = PerformanceCalculationHelper.GetTerm(stockPurchase.PurchaseDate),
NetGain = PerformanceCalculationHelper.CalculateNetGain(stockPurchase.Shares, stockPurchase.CurrentPrice, stockPurchase.PurchaseCostPerShare),
};
}
return(investmentPerformance);
}
public void NetGain_Should_Be_Positive_If_The_Customer_Earned_Money(int shares, decimal currentPrice, decimal purchaseCostPerShare)
{
Assert.IsTrue(PerformanceCalculationHelper.CalculateNetGain(shares, currentPrice, purchaseCostPerShare) > 0);
}