public void DigitTerminalGivenNumberShouldMatch()
{
var digitTerminal = new DigitTerminal();
Assert.IsTrue(digitTerminal.IsMatch('0'));
}
public void DigitTerminalGivenLetterShouldFailMatch()
{
var digitTerminal = new DigitTerminal();
Assert.IsFalse(digitTerminal.IsMatch('a'));
}