public void WhenRatesRequestIsNull_ThenGetThrows()
{
var cachingAccess = new CachingExchangeRatesAccess(
new MemoryCache("rates"),
Mock.Of <IExchangeRatesAccess>());
var getFunc = new Func <Task>(() => cachingAccess.GetRates(null));
getFunc.Should().Throw <ArgumentNullException>().WithMessage("*request*");
}
public void WhenDefaultRequestIsRetrieved_ThenItIsTheDefaultOfTheInjectedAccess()
{
var expectedRequest = new ExchangeRatesRequest("BASEBASE", DateTime.UtcNow);
var injectedAccess = new Mock <IExchangeRatesAccess>();
injectedAccess.SetupGet(m => m.DefaultRequest).Returns(expectedRequest);
var cachingAccess = new CachingExchangeRatesAccess(
new MemoryCache("name"),
injectedAccess.Object);
var defaultRequest = cachingAccess.DefaultRequest;
defaultRequest.Should().BeEquivalentTo(expectedRequest);
}
public async Task WhenCacheDoesNotContainItem_ThenAccessIsInvoked()
{
var expectedRequest = new ExchangeRatesRequest("BASE", DateTime.UtcNow);
var accessMock = new Mock <IExchangeRatesAccess>();
ExchangeRatesRequest actualRequest = null;
accessMock.Setup(m => m.GetRates(It.IsAny <ExchangeRatesRequest>()))
.Callback <ExchangeRatesRequest>(request => actualRequest = request)
.ReturnsAsync(new ExchangeRatesResponse(
expectedRequest.BaseCurrency,
expectedRequest.Date,
new Dictionary <string, decimal>()));
var cachingAccess = new CachingExchangeRatesAccess(new MemoryCache("rates"), accessMock.Object);
await cachingAccess.GetRates(expectedRequest);
actualRequest.Should().BeEquivalentTo(expectedRequest);
}