public void TestIsPalindrome()
{
// Arrange
// null head
SLLNode nullHead = null;
// single node
SLLNode singleNode = new SLLNode(1);
// not a palindrome
SLLNode notAPalindrome = new SLLNode(1);
notAPalindrome.AddToTail(2);
// is a palindrome
SLLNode isAPalindrome = new SLLNode(1);
isAPalindrome.AddToTail(1);
isAPalindrome.AddToTail(1);
isAPalindrome.AddToTail(2);
isAPalindrome.AddToTail(2);
isAPalindrome.AddToTail(1);
isAPalindrome.AddToTail(1);
isAPalindrome.AddToTail(1);
// Act
bool nullHeadResult = LinkedLists.IsPalindrome(nullHead);
bool singleNodeResult = LinkedLists.IsPalindrome(singleNode);
bool notAPalindromeResult = LinkedLists.IsPalindrome(notAPalindrome);
bool isAPalindromeResult = LinkedLists.IsPalindrome(isAPalindrome);
// Assert
Assert.IsFalse(nullHeadResult);
Assert.IsTrue(singleNodeResult);
Assert.IsFalse(notAPalindromeResult);
Assert.IsTrue(isAPalindromeResult);
}