private static void Validate <T>(bool expected, Node <T> head)
where T : IEquatable <T>
{
var result = Question_2_6.IsPalindrome(head);
Assert.AreEqual(expected, result);
result = Question_2_6.IsPalindromeRecursive(head);
Assert.AreEqual(expected, result);
}
public void IsPalindromeTest_ReturnTrue()
{
var testList = new LinkedList(new int[] { 0, 1, 2, 3, 2, 1, 0 });
bool result = Question_2_6.IsPalindrome(testList);
Assert.IsTrue(result, $"List {testList} is not palindrome.");
testList = new LinkedList(new int[] { 0, 1, 2, 3, 3, 2, 1, 0 });
result = Question_2_6.IsPalindrome(testList);
Assert.IsTrue(result, $"List {testList} is not palindrome.");
}
public void IsPalindromeRecursiveTest_ReturnFalse()
{
var testList = new LinkedList(new int[] { 1, 2, 3, 2, 5 });
bool result = Question_2_6.IsPalindromeRecursive(testList);
Assert.IsFalse(result, $"List {testList} is palindrome.");
testList = new LinkedList(new int[] { 1, 2, 3, 3, 2, 6 });
result = Question_2_6.IsPalindromeRecursive(testList);
Assert.IsFalse(result, $"List {testList} is palindrome.");
}
public void Question_2_6_InvalidCases()
{
Node <int> nullHead = null;
TestHelpers.AssertExceptionThrown(() => Question_2_6.IsPalindrome(nullHead), typeof(ArgumentNullException));
}