public void GetExchangedValueReturnsANumberRoundedBy8()
{
var er = new ExchangeRate(5999999M, "R$/BTC", DateTime.Now, CultureInfo.InvariantCulture);
var valueFiat = 15M;
var result = er.ExchangeValueTo(valueFiat);
var numberOfDecimals = result.ToString(CultureInfo.InvariantCulture).Split('.').Last().Length;
Assert.Equal(numberOfDecimals, Constants.BitcoinDecimals);
var roundValue = Math.Round(valueFiat / er.Rate, Constants.BitcoinDecimals, MidpointRounding.AwayFromZero);
Assert.Equal(result, roundValue);
}