public void TestAppendingExchangeRateWithBaseCurrencyNotInMainListCurrenciesRates()
{
//Arrange
var firstRateList = new Dictionary <string, decimal>
{
{ "BRL", (decimal)39471.159 },
{ "EUR", (decimal)8708.442 },
{ "USD", (decimal)9558.551 }
};
var mainExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "BTC", CurrenciesRates = new Dictionary <string, decimal>(firstRateList)
};
//Act
var SecondRateList = new Dictionary <string, decimal>
{
{ "CAD", (decimal)1.5344 },
{ "HKD", (decimal)9.29 },
{ "AUD", (decimal)1.5761 },
{ "USD", (decimal)1.1983 }
};
var SecondExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "MYR", CurrenciesRates = new Dictionary <string, decimal>(SecondRateList)
};
//Assert
Action act = () => mainExchageRate.Append(SecondExchageRate);
act.Should().Throw <Exception>().Where(e => e.Message.StartsWith("The ExchangeRatesList can't be appended"));
}
public void TestAppendingEmptyExchangeRate()
{
//Arrange
var firstRateList = new Dictionary <string, decimal>
{
{ "BRL", (decimal)39471.159 },
{ "EUR", (decimal)8708.442 },
{ "USD", (decimal)9558.551 }
};
var mainExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "BTC", CurrenciesRates = new Dictionary <string, decimal>(firstRateList)
};
var SecondExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "EUR"
};
//Act
mainExchageRate.Append(SecondExchageRate);
//Assert
mainExchageRate.Should().NotBeNull();
mainExchageRate.BaseCurrencySymbol.Should().Be("BTC");
mainExchageRate.CurrenciesRates.Should().HaveCount(3).And.ContainKeys(firstRateList.Keys);;
mainExchageRate.CurrenciesRates["BRL"].Should().Be((decimal)(39471.159));
mainExchageRate.CurrenciesRates["USD"].Should().Be((decimal)(9558.551));
}
public override async Task <ExchangeRatesList> GetExchangeRatesList(string BaseCurrencySymbol, params string[] TargetedCurrencies)
{
BaseCurrencySymbol = BaseCurrencySymbol.ToUpper();
TargetedCurrencies = TargetedCurrencies.Select(e => e.ToUpper()).ToArray();
if (!supportedCurrencies.Contains(BaseCurrencySymbol))
{
throw new InvalidRequestException($"{BaseCurrencySymbol} is Unsupported currency");
}
if (TargetedCurrencies == null || TargetedCurrencies.Length == 0)
{
TargetedCurrencies = _config.DefaultTargetedCurrencies.ToArray();
}
List <string> newTargets = new List <string>();
ExchangeRatesList exchangeRatesList = new ExchangeRatesList()
{
BaseCurrencySymbol = BaseCurrencySymbol
};
foreach (var targetedcurrency in TargetedCurrencies)
{
decimal rate;
if (_memoryCache.TryGetValue(GetCacheKey(BaseCurrencySymbol, targetedcurrency), out rate))
{
exchangeRatesList.CurrenciesRates.Add(targetedcurrency, rate);
}
else
{
newTargets.Add(targetedcurrency);
}
}
if (newTargets.Count > 0)
{
_logger.LogInformation($"Requesting ExchangeRates of {string.Join(",", newTargets)} from {ServiceProviderName} Provider");
var rates = await base.GetExchangeRatesList(BaseCurrencySymbol, newTargets.ToArray());
foreach (var rate in rates.CurrenciesRates)
{
_memoryCache.Set(GetCacheKey(BaseCurrencySymbol, rate.Key), rate.Value, DateTimeOffset.Now.AddMinutes(_config.ExpiredAfterInMinutes));
exchangeRatesList.CurrenciesRates.Add(rate.Key, rate.Value);
}
}
return(exchangeRatesList);
}
public static void Append(this ExchangeRatesList mainRate, ExchangeRatesList AppendedExchangeRate, bool WithOverwrite = false)
{
if (AppendedExchangeRate == null)
{
return;
}
decimal AppendedBaseCurrencyRate;
if (!mainRate.CurrenciesRates.TryGetValue(AppendedExchangeRate.BaseCurrencySymbol, out AppendedBaseCurrencyRate))
{
throw new Exception("The ExchangeRatesList can't be appended because its BaseCurrencySymbol is doesn't exists in the main ExchangeRateList's CurrenciesRates");
}
foreach (var rate in AppendedExchangeRate.CurrenciesRates)
{
var newRate = rate.Value * AppendedBaseCurrencyRate;
if (!mainRate.CurrenciesRates.TryAdd(rate.Key, newRate) && WithOverwrite)
{
mainRate.CurrenciesRates[rate.Key] = newRate;
}
}
}
public void TestAppendingExchangeRate_WithOverwrite()
{
//Arrange
var firstRateList = new Dictionary <string, decimal>
{
{ "BRL", (decimal)39471.159 },
{ "EUR", (decimal)8708.442 },
{ "USD", (decimal)9558.551 }
};
var mainExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "BTC", CurrenciesRates = new Dictionary <string, decimal>(firstRateList)
};
var SecondRateList = new Dictionary <string, decimal>
{
{ "CAD", (decimal)1.5344 },
{ "HKD", (decimal)9.29 },
{ "AUD", (decimal)1.5761 },
{ "USD", (decimal)1.3 }
};
var SecondExchageRate = new ExchangeRatesList()
{
BaseCurrencySymbol = "EUR", CurrenciesRates = new Dictionary <string, decimal>(SecondRateList)
};
//Act
mainExchageRate.Append(SecondExchageRate, true);
//Assert
mainExchageRate.Should().NotBeNull();
mainExchageRate.BaseCurrencySymbol.Should().Be("BTC");
mainExchageRate.CurrenciesRates.Should().HaveCount(6).And.ContainKeys(SecondRateList.Keys);
mainExchageRate.CurrenciesRates["CAD"].Should().Be((decimal)(1.5344 * 8708.442));
mainExchageRate.CurrenciesRates["USD"].Should().Be((decimal)(1.3 * 8708.442));
}
