public async Task GetExchangeRateAsync_WhenCurrencySymbolIsPln_ShouldReturnOne()
{
// Arrange
const string plnCurrencySymbol = "PLN";
var httpClientMock = new HttpClientMock();
var service = new ExchangeRateService(httpClientMock.GetHttpClient(),
new Mock <ILogger <ExchangeRateService> >().Object);
// Act
decimal result = await service.GetExchangeRateAsync(plnCurrencySymbol, _today);
// Assert
result.ShouldBe(1m);
}
public async Task GetExchangeRateAsync_WhenExceptionIsBeingThrows_ShouldThrowApiException()
{
// Arrange
const string errorMessage = "error-message";
var httpClientMock = new HttpClientMock();
var service = new ExchangeRateService(httpClientMock.GetHttpClientWhichThrowsException(errorMessage),
new Mock <ILogger <ExchangeRateService> >().Object);
// Act
var exception =
await Should.ThrowAsync <Exception>(async() =>
await service.GetExchangeRateAsync(UsdCurrencySymbol, _today));
// Assert
exception.Message.ShouldBe(errorMessage);
}
public async Task GetExchangeRateAsync_WhenResponseIsValid_ShouldReturnRate()
{
// Arrange
var httpClientMock = new HttpClientMock
{
Content =
"{\"table\":\"A\",\"currency\":\"jen (Japonia)\",\"code\":\"JPY\",\"rates\":[{\"no\":\"088/A/NBP/2019\",\"effectiveDate\":\"2019-05-08\",\"mid\":0.034793}]}"
};
var service = new ExchangeRateService(httpClientMock.GetHttpClient(),
new Mock <ILogger <ExchangeRateService> >().Object);
// Act
decimal result = await service.GetExchangeRateAsync("JPY", new DateTime(2019, 5, 8));
// Assert
result.ShouldBe(0.034793m);
}
public async Task GetExchangeRateAsync_WhenResponseStatusCodeIsNotFound_ShouldThrowApiException()
{
// Arrange
var httpClientMock = new HttpClientMock {
StatusCode = HttpStatusCode.NotFound
};
var service = new ExchangeRateService(httpClientMock.GetHttpClient(),
new Mock <ILogger <ExchangeRateService> >().Object);
// Act
var exception =
await Should.ThrowAsync <ApiException>(async() =>
await service.GetExchangeRateAsync(UsdCurrencySymbol, _today));
// Assert
this.ShouldSatisfyAllConditions(
() =>
{
exception.Code.ShouldBe(HttpStatusCode.NotFound);
exception.Errors.ShouldBe($"Exchange rate not found [{UsdCurrencySymbol}/{_today:yyyy-MM-dd}].");
});
}
public async Task GetExchangeRateAsync_WhenResponseStatusCodeIsInvalid_ShouldThrowApiException(HttpStatusCode statusCode)
{
// Arrange
var httpClientMock = new HttpClientMock {
StatusCode = statusCode
};
var service = new ExchangeRateService(httpClientMock.GetHttpClient(),
new Mock <ILogger <ExchangeRateService> >().Object);
// Act
var exception =
await Should.ThrowAsync <ApiException>(async() =>
await service.GetExchangeRateAsync("USD", _today));
// Assert
this.ShouldSatisfyAllConditions(
() =>
{
exception.Code.ShouldBe(HttpStatusCode.InternalServerError);
exception.Errors.ShouldBe(
$"An error occured while getting exchange rate [USD/{_today:yyyy-MM-dd}].");
});
}