private void Convert(Conversion conversion)
{
if (cmbLeftCurrency.SelectedItem == null || cmbRightCurrency.SelectedItem == null)
{
return;
}
string leftCurrency = ((CurrencyData)cmbLeftCurrency.SelectedItem).Symbol;
string rightCurrency = ((CurrencyData)cmbRightCurrency.SelectedItem).Symbol;
double input;
if (conversion == Conversion.LeftToRight)
{
if (double.TryParse(txtLeftValue.Text, out input))
{
txtRightValue.Text = calculator.Convert(input, leftCurrency, rightCurrency).ToString("F2");
}
}
else
{
if (double.TryParse(txtRightValue.Text, out input))
{
txtLeftValue.Text = calculator.Convert(input, rightCurrency, leftCurrency).ToString("F2");
}
}
}
public void Convert_MoneyExchangeRequestIsNull_ShouldThrowException()
{
//Arrange
var moneyExchangeRequest = null as MoneyExchangeRequest;
//Act && Assert
var message = Should.Throw <DomainException>(() =>
_currencyCalculator.Convert(moneyExchangeRequest)).Message;
message.ShouldBe("MoneyExchangeRequest cannot be null");
}