public void InitializeCorrectly_WhenValidExchangeRateApiCallerIsPassed()
{
var eracMock = new Mock <IExchangeRateApiService>();
var sut = new Data.CurrencyConverterService(eracMock.Object);
Assert.IsInstanceOfType(sut, typeof(Data.CurrencyConverterService));
}
public async Task ThrowServiceException_WhenNegativeAmountIsPassed()
{
decimal negativeNumber = -44;
var exchangeRateApiCallerMock = new Mock <IExchangeRateApiService>();
var sut = new Data.CurrencyConverterService(exchangeRateApiCallerMock.Object);
await Assert.ThrowsExceptionAsync <ServiceException>(async() => await sut.ConvertFromBaseToOtherAsync(negativeNumber, Currency.BGN));
}
public async Task ReturnAmountConvertedFromBaseToOther_WhenValidParametersArePassed()
{
decimal inputVal = 10;
decimal exchangeRateApiCallerMockReturnVal = 5;
decimal expectedVal = inputVal * exchangeRateApiCallerMockReturnVal;
var exchangeRateApiCallerMock = new Mock <IExchangeRateApiService>();
exchangeRateApiCallerMock.Setup(e => e.GetRateAsync(It.IsAny <Currency>())).ReturnsAsync(exchangeRateApiCallerMockReturnVal);
var sut = new Data.CurrencyConverterService(exchangeRateApiCallerMock.Object);
var result = await sut.ConvertFromBaseToOtherAsync(inputVal, Currency.USD);
Assert.IsTrue(result == expectedVal);
}
public async Task ReturnNumberConvertedToBaseCurrency_WhenValidParametersArePassed()
{
decimal inputVal = 10;
decimal returnVal = 5;
decimal expectedVal = inputVal * (1 / returnVal);
var exchangeRateApiCallerMock = new Mock <IExchangeRateApiService>();
exchangeRateApiCallerMock.Setup(e => e.GetRateAsync(It.IsAny <Currency>())).ReturnsAsync(returnVal);
var sut = new Data.CurrencyConverterService(exchangeRateApiCallerMock.Object);
var result = await sut.ConvertToBaseCurrencyAsync(inputVal, Currency.BGN);
Assert.IsTrue(result == expectedVal);
}
