public void NOutOfRange_ReturnsNull()
{
// Arrange
var sut = new FromLast <string>();
var list = new LinkedList <string>();
list.InsertLast("A");
list.InsertLast("B");
// Act
var node = sut.Execute(list, 2);
// Assert
Assert.IsNull(node);
}
public void ReturnNElementsFromEnd()
{
// Arrange
var sut = new FromLast <string>();
var list = new LinkedList <string>();
list.InsertFirst("A");
var expectedData = "B";
list.InsertLast(expectedData);
list.InsertLast("C");
list.InsertLast("D");
list.InsertLast("E");
// Act
var node = sut.Execute(list, 3);
// Assert
Assert.AreEqual(expectedData, node.Data);
}