public void TestMethod1() { ExchangeRate er = new ExchangeRate(); var convertedValue = er.BaseCurrency("USD").CurrencyToConvert("GBP").GetExchangeRate().CalculateConvertedValue(300); var convertedValueTwo = er.BaseCurrency("USD").CurrencyToConvert("AUD").GetExchangeRate().CalculateConvertedValue(9900); var convertedValueThree = er.BaseCurrency("USD").CurrencyToConvert("EUR").GetExchangeRate().CalculateConvertedValue(9900); var rateTest = er.BaseCurrency("USD").CurrencyToConvert("EUR").RetrieveExchangeRate(); }