public void ZeroFormatter_When_InputIsNotZero_Then_ResultIsException()
{
// arrange
var formatter = new ZeroFormatter();
// act
// assert
Assert.Throws <NumberNotZeroException>(() => formatter.Format(1));
}
public void ZeroFormatter_When_InputIs0_Then_ResultIsZero()
{
// arrange
var formatter = new ZeroFormatter();
// act
var value = formatter.Format(0);
// assert
Assert.That(value, Is.EqualTo("zero"));
}