public void AddTradeNonExistingCurrencyTest()
{
// Arrange.
var tradesService = CreateTradesService();
// Act.
var parameters = new AddTradeParameters
{
AskCurrencyCode = Constants.Usd,
BidCurrencyCode = "ABC",
SoldAmount = 210,
Time = DateTime.Now,
ClientName = "TestClient"
};
Func <Task> action = () => tradesService.AddTradeAsync(parameters);
// Assert.
Assert.ThrowsExceptionAsync <IncorrectParametersException>(action).Wait();
}
public async Task AddTradeAsync(AddTradeParameters parameters)
{
if (parameters.SoldAmount <= 0)
{
throw new IncorrectParametersException("An incorrect sold amount specified");
}
Currency askCurrency = (await _currencyRepository
.FindAsync(x => x.Code == parameters.AskCurrencyCode))
.FirstOrDefault();
Currency bidCurrency = (await _currencyRepository
.FindAsync(x => x.Code == parameters.BidCurrencyCode))
.FirstOrDefault();
if (askCurrency == null || bidCurrency == null)
{
throw new IncorrectParametersException("TradesService: An incorrect currency code specified");
}
decimal brokerRate = await _currencyRatesProvider.GetRateAsync(
parameters.BidCurrencyCode,
parameters.AskCurrencyCode,
parameters.Time);
decimal totalEnrichmentPercent = await _configurationService.GetTotalEnrichmentPercentAsync();
decimal rateEnrichmentCoefficient = 1m / (1m + totalEnrichmentPercent / 100m);
decimal clientRate = brokerRate * rateEnrichmentCoefficient;
var tradeModel = new Trade
{
AskCurrency = askCurrency,
BidCurrency = bidCurrency,
SoldAmount = parameters.SoldAmount,
BoughtByUsAmount = decimal.Round(parameters.SoldAmount * brokerRate, 2),
BoughtByClientAmount = decimal.Round(parameters.SoldAmount * clientRate, 2),
ClientName = parameters.ClientName,
Time = parameters.Time
};
await _tradesRepository.CreateAsync(tradeModel);
}
public void AddTradeCorrectTest()
{
// Arrange.
var currencyRatesProvider = new MockCurrencyRatesProvider();
var configurationService = new MockConfigurationService();
var tradesRepository = new TradesInMemoryRepository();
currencyRatesProvider.Rates.Add(new Tuple <string, string>(Constants.Rub, Constants.Usd), 1m / 70m);
configurationService.TotalEnrichmentPercent = 50m;
var tradesService = CreateTradesService(
tradesRepository: tradesRepository,
currencyRatesProvider: currencyRatesProvider,
configurationService: configurationService);
string clientName = "TestClient";
// Act.
var parameters = new AddTradeParameters
{
AskCurrencyCode = Constants.Usd,
BidCurrencyCode = Constants.Rub,
SoldAmount = 210,
Time = DateTime.Now,
ClientName = clientName
};
tradesService.AddTradeAsync(parameters).Wait();
// Assert.
Assert.AreEqual(1, tradesRepository.GetQueryable().Count());
var trade = tradesRepository.GetAllAsync().Result.First();
Assert.AreEqual(Constants.Usd, trade.AskCurrency.Code);
Assert.AreEqual(Constants.Rub, trade.BidCurrency.Code);
Assert.AreEqual(2m, trade.BoughtByClientAmount);
Assert.AreEqual(3m, trade.BoughtByUsAmount);
Assert.AreEqual(clientName, trade.ClientName);
}
