public void Given_CurrenciesAndDate_When_GetBidirectionalAsyncInvoked_Then_resultWithExchangeRatesBothRetrived()
{
string currencyFrom = "USD", currencyTo = "EUR";
var date = DateTime.Today;
var result = _serviceUnderTest.GetBidirectionalAsync(currencyFrom, currencyTo, date).Result;
Assert.IsNotNull(result);
Assert.AreEqual(result.Count(), 2);
Assert.IsTrue(result.Any(x => x.From == currencyFrom));
Assert.IsTrue(result.Any(x => x.From == currencyTo));
Assert.IsTrue(result.Any(x => x.To == currencyTo));
Assert.IsTrue(result.Any(x => x.To == currencyFrom));
Assert.IsTrue(result.All(x => x.Rate > 0));
Assert.IsTrue(result.All(x => x.Date == date));
}