public void When_ListIsEmpty_Then_ShouldReturnNull(int num)
{
List <int> a = new List <int>();
PairFinder pf = new PairFinder(a);
Assert.IsNull(pf.FindPairForNum(num));
}
public void When_NegativeMatchFound_Then_ShouldReturnNull()
{
List <int> a = new List <int> {
-5, -2
};
PairFinder pf = new PairFinder(a);
Assert.IsNotNull(pf.FindPairForNum(-7));
}
public void When_PositiveMatchFound_Then_ShouldReturnNull()
{
List <int> a = new List <int> {
1, 2
};
PairFinder pf = new PairFinder(a);
Assert.IsNotNull(pf.FindPairForNum(3));
}
