public async Task WillThrowExceptionForSameCurrencyPair()
{
var systemConfig = new Mock <ISystemConfiguration>();
var fixerService = new Mock <IFixerService>();
systemConfig.Setup(x => x.IsCurrencySupported("AUD")).Returns(true);
var service = new FxService(systemConfig.Object, fixerService.Object);
await Assert.ThrowsAsync <ArgumentException>(() => service.GetRate("AUD", "AUD"));
}
public async Task WillThrowExceptionForInvalidTargetCurrency()
{
var systemConfig = new Mock <ISystemConfiguration>();
var fixerService = new Mock <IFixerService>();
systemConfig.Setup(x => x.IsCurrencySupported("AUD")).Returns(true);
systemConfig.Setup(x => x.IsCurrencySupported("USD")).Returns(false);
var service = new FxService(systemConfig.Object, fixerService.Object);
await Assert.ThrowsAsync <ArgumentOutOfRangeException>(() => service.GetRate("AUD", "USD"));
}
public async Task WillReturnRateForValidPair()
{
var systemConfig = new Mock <ISystemConfiguration>();
var fixerService = new Mock <IFixerService>();
systemConfig.Setup(x => x.IsCurrencySupported("AUD")).Returns(true);
systemConfig.Setup(x => x.IsCurrencySupported("USD")).Returns(true);
systemConfig.Setup(x => x.Round).Returns(5);
var timestamp = DateTime.Now;
fixerService.Setup(x => x.GetRate("AUD", "USD")).Returns(Task.FromResult(new FxRate {
Rate = 1.5671827648273M, Timestamp = timestamp
}));
var service = new FxService(systemConfig.Object, fixerService.Object);
var response = await service.GetRate("AUD", "USD");
Assert.Equal("AUD", response.BaseCurrency);
Assert.Equal("USD", response.TargetCurrency);
Assert.Equal(timestamp, response.Timestamp);
Assert.Equal(1.56718M, response.ExchangeRate);
}