public void ReverseList_EmptyList_ShouldReturnNull()
{
ListNode node = null;
var result = ReverseListImplementation.ReverseList(node);
Assert.Null(result);
}
public void ReverseList_OneNodeList_ShouldReturnOneNodeList()
{
var node = new ListNode(5);
var result = ReverseListImplementation.ReverseList(node);
Assert.Equal(5, result.val);
Assert.Null(result.next);
}
public void ReverseList_FromLeetCode_ShouldReturnReversedList()
{
var node = new ListNode(1);
node.next = new ListNode(2);
node.next.next = new ListNode(3);
var expectedResult = new ListNode(3);
expectedResult.next = new ListNode(2);
expectedResult.next.next = new ListNode(1);
var result = ReverseListImplementation.ReverseList(node);
Assert.True(result.Equals(expectedResult) && expectedResult.Equals(result));
}
