public async Task ShouldThrowModelValidationErrorForInvalidRequest()
{
var priceConversionService = new PriceConversionService(httpWrapper.Object, configuration.Object, _priceConversionRequestValidator, _loggerMock.Object);
await Assert.ThrowsAsync <ArgumentNullException>(() => priceConversionService.ConvertCurrencyAsync(null));
await Assert.ThrowsAsync <ValidationException>(() => priceConversionService.ConvertCurrencyAsync(new PriceConversionRequest()));
}
public async Task ShouldReturnNullForNotSupportedCurrencies()
{
var apiResponse = new HttpWrappedResponse <ExchangeRatesResponse>(null, new HttpResponseMessage(HttpStatusCode.NotFound));
httpWrapper.Setup(x => x.GetAsync <ExchangeRatesResponse>(It.IsAny <string>(), It.IsAny <CancellationToken>(), null)).ReturnsAsync(apiResponse);
var priceConversionService = new PriceConversionService(httpWrapper.Object, configuration.Object, _priceConversionRequestValidator, _loggerMock.Object);
var result = await priceConversionService.ConvertCurrencyAsync(new PriceConversionRequest
{ Price = 10, SourceCurrency = "Source", TargetCurrency = "Target" }).ConfigureAwait(false);
Assert.Null(result);
}
public async Task ShouldThrowErrorIfExchangeRateApiNotConfigured()
{
var apiResponse = new HttpWrappedResponse <ExchangeRatesResponse>(null, new HttpResponseMessage(HttpStatusCode.NotFound));
configuration.Setup(x => x.GetSection(It.IsAny <string>())).Returns(default(ConfigurationSection));
httpWrapper.Setup(x => x.GetAsync <ExchangeRatesResponse>(It.IsAny <string>(), It.IsAny <CancellationToken>(), null)).ReturnsAsync(apiResponse);
var priceConversionService = new PriceConversionService(httpWrapper.Object, configuration.Object, _priceConversionRequestValidator, _loggerMock.Object);
var error = await Assert.ThrowsAsync <Exception>(() => priceConversionService.ConvertCurrencyAsync(new PriceConversionRequest {
Price = 10, SourceCurrency = "Source", TargetCurrency = "Target"
})).ConfigureAwait(false);
Assert.Equal("Exchange rates API not configured", error.Message);
_loggerMock.Verify(x => x.LogError(It.IsAny <string>()), Times.Once);
}
public async Task ShouldConvertCurrencyForSupportedCurrencies(double price, double exchangeRate, string targetCurrency, string sourceCurrency)
{
var apiResponse = new HttpWrappedResponse <ExchangeRatesResponse>(new ExchangeRatesResponse
{
Date = DateTime.Now.AddDays(-1).ToString("dd/MM/yyyy"),
TimeLastUpdated = DateTime.Now.AddDays(-1).Ticks,
Rates = new Rates {
EUR = exchangeRate, GBP = exchangeRate, USD = exchangeRate
}
},
new HttpResponseMessage(HttpStatusCode.OK));
httpWrapper.Setup(x => x.GetAsync <ExchangeRatesResponse>(It.IsAny <string>(), It.IsAny <CancellationToken>(), null)).ReturnsAsync(apiResponse);
var priceConversionService = new PriceConversionService(httpWrapper.Object, configuration.Object, _priceConversionRequestValidator, _loggerMock.Object);
var result = await priceConversionService.ConvertCurrencyAsync(new PriceConversionRequest
{ Price = price, SourceCurrency = sourceCurrency, TargetCurrency = targetCurrency }).ConfigureAwait(false);
var expectedPrice = price * exchangeRate;
Assert.Equal(expectedPrice, result.NewPrice);
}