public void EvenNumberFilterReturnsTrueWhenPassedAnEvenNumber()
{
IEvenNumberFilter filter = new EvenNumberFilter();
Assert.AreEqual(true, filter.IsEven(6));
}
public void EvenNumberFilterReturnsFalseWhenPassedAnOddNumber()
{
IEvenNumberFilter filter = new EvenNumberFilter();
Assert.AreEqual(false, filter.IsEven(7));
}