public void ItShouldConvertFromPoundsToDollarsCorrectly()
{
decimal amountInPounds = 1m;
decimal expectedAmountInDollars = 1.25m;
Converter converter = new Converter();
decimal result = converter.Convert("GBP", "USD", amountInPounds);
Assert.AreEqual(expectedAmountInDollars, result);
}
public void AnExceptionShouldBeThrownIfAnUnknownCurrencyTypeIsPassedIn()
{
Converter converter = new Converter();
converter.Convert("USD", "DDD", 100);
}