public void NullConstructor_Test()
{
InMemoryStockRepository repo = new InMemoryStockRepository(null);
IEnumerable <IStock> result = repo.GetAllStocks();
Assert.IsNotNull(result);
Assert.AreEqual(0, result.Count());
}
public void ValidConstructor_Test()
{
List <IStock> listOfStocks = new List <IStock>();
listOfStocks.Add(new Stock());
listOfStocks.Add(new Stock());
listOfStocks.Add(new Stock());
listOfStocks.Add(new Stock());
InMemoryStockRepository repo = new InMemoryStockRepository(listOfStocks);
IEnumerable <IStock> result = repo.GetAllStocks();
Assert.IsNotNull(result);
Assert.AreEqual(4, result.Count());
Assert.ReferenceEquals(result, listOfStocks);
}
public void RunThroughRequirements()
{
// Setup the sample data as per word document
List <IStock> sampleData = DemoData;
// Setup our stock repo with the sample data as standard and the trade with no data.
IStockRepository stockRepo = new InMemoryStockRepository(sampleData);
ITradeRepository tradeRepo = new InMemoryTradeRepository(null);
ITradeService tradeService = new TradeService(tradeRepo);
IStockManagementService stockManagementService = new StockManagementService(stockRepo, tradeService);
// 1a i
// Set the price, calculate the dividend yield and assert for COMMON
stockManagementService.UpdateMarketPrice("POP", 100M);
Decimal pop_dividendYield = stockManagementService.GetDividendYield("POP");
Assert.AreEqual(0.08M, pop_dividendYield);
// Set the price, calculate the dividend yield and assert for PREFERRED
stockManagementService.UpdateMarketPrice("GIN", 102M);
Decimal gin_dividendYield = stockManagementService.GetDividendYield("GIN");
Assert.AreEqual(0.02M, gin_dividendYield);
// 1a ii
// Set the price, calculate the P/E ratio and assert
stockManagementService.UpdateMarketPrice("ALE", 175M);
Decimal ale_PERatio = stockManagementService.GetPERatio("ALE");
Assert.AreEqual(7.6M, ale_PERatio);
// 1a iii
// Record trades at multiple prices
stockManagementService.BuyAtCurrentPrice("POP", 5);
stockManagementService.BuyAtCurrentPrice("ALE", 6);
stockManagementService.BuyAtCurrentPrice("GIN", 1);
// Price Change
stockManagementService.UpdateMarketPrice("POP", 101M);
stockManagementService.UpdateMarketPrice("ALE", 101M);
stockManagementService.UpdateMarketPrice("GIN", 87M);
stockManagementService.UpdateMarketPrice("TEA", 104M);
// More trades
stockManagementService.BuyAtCurrentPrice("TEA", 1);
stockManagementService.BuyAtCurrentPrice("POP", 5);
stockManagementService.BuyAtCurrentPrice("ALE", 5);
stockManagementService.BuyAtCurrentPrice("ALE", 2);
stockManagementService.SellAtCurrentPrice("GIN", 1);
// 1a iv
// Assert a number of Volume Weighted Stock Prices now trades have been recorded.
Decimal pop_vwsp = tradeService.GetVolumeWeightedStockPrice("POP", 15); // ((100*5)+(101*5))/10 = 100.5
Assert.AreEqual(100.5M, pop_vwsp);
Decimal ale_vwsp = tradeService.GetVolumeWeightedStockPrice("ALE", 15); // ((175*6)+(101*5)+(101*2))/13 = 135.15
Assert.AreEqual(135.15M, ale_vwsp);
Decimal gin_vwsp = tradeService.GetVolumeWeightedStockPrice("GIN", 15); // ((102*1)+(87*1))/2 = 94.5
Assert.AreEqual(94.5M, gin_vwsp);
// 1b
// Calculate the current price of the GBCE All Share Index
Decimal indexPrice = stockManagementService.GetIndexPrice();
Assert.AreEqual(98.02M, indexPrice);
}
