public void GetCurrencyRateInEuroReturnsNull_IfCacheIsEmptyTest()
{
//Arrange
var repository = new CurrenciesRepository();
//Act
var exchangeRate = repository.GetCurrencyRateInEuro("USD", DateTime.Now);
//Assert
Assert.IsNull(exchangeRate);
}
public async Task GetCurrencyRateInEuroReturnsNull_IfCacheIsNotEmptyTest()
{
//Arrange
var repository = new CurrenciesRepository();
//Act
var exchangeRates = await repository.GetExchangeRates(DateTime.Now);
var exchangeRate = repository.GetCurrencyRateInEuro("USD", DateTime.Now);
//Assert
Assert.IsNotNull(exchangeRate);
}