public void SimpleLinkedListTest()
{
SimpleLinkedList node = new SimpleLinkedList();
node.Add(5);
node.Add(6);
node.Add(12);
//get the head Node from the Linked List
SimpleLinkedList.Node currentNode;
currentNode = node.GetCurrentNode();
Assert.IsNotNull(currentNode);
Assert.AreEqual(5, currentNode.Data);
//get the next Node from the Linked List
var nextNode = node.GetNext();
currentNode = nextNode;
Assert.IsNotNull(currentNode);
Assert.AreEqual(6, currentNode.Data);
//get the following node
nextNode = node.GetNext();
currentNode = nextNode;
Assert.IsNotNull(currentNode);
Assert.AreEqual(12, currentNode.Data);
nextNode = node.GetNext();
currentNode = nextNode;
Assert.IsNotNull(currentNode);
//test removing node from list
currentNode = node.Head();
Assert.IsNotNull(currentNode);
Assert.AreEqual(5, currentNode.Data);
currentNode = node.GetNext();
Assert.IsNotNull(currentNode);
Assert.AreEqual(6, currentNode.Data);
node.RemoveCurrentNode();
currentNode = node.GetCurrentNode();
Assert.IsNotNull(currentNode);
Assert.AreEqual(12, currentNode.Data);
//remove head from list
currentNode = node.Head();
Assert.IsNotNull(currentNode);
Assert.AreEqual(5, currentNode.Data);
node.RemoveCurrentNode();
currentNode = node.GetCurrentNode();
Assert.IsNotNull(currentNode);
Assert.AreEqual(12, currentNode.Data);
}