static void Main(string[] args)
{
var parser = new WordsToNumber();
parser.NumberToString += NumberToString;
var input = File.ReadAllText("input.txt");
var output = parser.WordsToNumberInText(input);
File.WriteAllText("output.txt", output);
}
public void Convert_Throw_ArgumentException_When_Input_Is_Null()
{
Action act = () => WordsToNumber.Convert(null);
var exception = Assert.Throws <ArgumentException>(act);
}
