public void InvalidInputsTest()
{
// Null input
TestHelpers.AssertExceptionThrown(() => { Question2_2.FindKthToLast <int>(null, 0); }, typeof(ArgumentNullException));
// K invalid
var list = ListHelpers.CreateLinkedList(1, 2, 3);
TestHelpers.AssertExceptionThrown(() => { Question2_2.FindKthToLast(list, -1); }, typeof(ArgumentOutOfRangeException));
list = ListHelpers.CreateLinkedList(1, 2, 3);
TestHelpers.AssertExceptionThrown(() => { Question2_2.FindKthToLast(list, 4); }, typeof(ArgumentOutOfRangeException));
}
public void BasicTest()
{
const int NumElements = 5;
var list = ListHelpers.CreateLinkedList(Enumerable.Range(0, NumElements).Reverse().ToArray());
for (int i = 0; i < NumElements; i++)
{
var input = ListHelpers.CloneList(list);
var result = Question2_2.FindKthToLast(input, i);
Assert.AreEqual(i, result.Data);
}
}