public ConversionRateHistoryDto GetConversionRateHistoricDataAsync(string fromCurrency, string toCurrency)
{
if (string.IsNullOrEmpty(fromCurrency) || string.IsNullOrEmpty(toCurrency))
{
return(new ConversionRateHistoryDto()
{
ErrorCode = ErrorCode.CurrencyNotProvided
});
}
var dbContext = BuildDbContext();
var rates = dbContext.ExchangeRates
.Where(rate => rate.Currency == fromCurrency || rate.Currency == toCurrency);
var distinctDates = rates.Select(rate => rate.Date).Distinct();
var dto = new ConversionRateHistoryDto()
{
FromCurrency = fromCurrency,
ToCurrency = toCurrency,
DailyConversionRates = CalculateDailyConversionRates(distinctDates, rates, fromCurrency, toCurrency).OrderByDescending(rate => rate.Date)
};
return(dto);
}
public async void GetExchangeRateHistoricDataAsync_ReturnsCorrectResult()
{
var responseDto = new ConversionRateHistoryDto()
{
FromCurrency = "EUR",
ToCurrency = "EUR",
DailyConversionRates = new List <DailyConversionRate>()
};
_mockExchangeRatesService.Setup(x =>
x.GetConversionRateHistoricDataAsync(It.IsAny <string>(), It.IsAny <string>()))
.Returns(responseDto);
var result = _mockExchangeRatesService.Object.GetConversionRateHistoricDataAsync("EUR", "EUR");
Assert.IsType <ConversionRateHistoryDto>(result);
Assert.Equal(responseDto.FromCurrency, result.FromCurrency);
Assert.Equal(responseDto.ToCurrency, result.ToCurrency);
Assert.Empty(result.DailyConversionRates);
}
