public void AddAtWrongIndex_IndexOutOfRangeException()
{
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("4");
testList.AddToTail("5");
Assert.ThrowsException <IndexOutOfRangeException>(
() => testList.Insert(7, "3"));
}
public void Insert_TheRightElementIsAdded(int value)
{
List <string> expected = new List <string> {
"1", "2", "3", "4", "5"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>("1", "2", "3", "4", "5");
testList.Insert(value, "0");
expected.Insert(value - 1, "0");
List <string> actualNextLinks = CheckNextLinks(testList);
List <string> actualPreviousLinks = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(actualNextLinks, expected);
expected.Reverse();
CollectionAssert.AreEqual(actualPreviousLinks, expected);
}
public void AddOneElementToTheMiddle_ElementsAreInRightOrder_FromTail()
{
List <string> expected = new List <string> {
"5", "4", "3", "2", "1"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("4");
testList.AddToTail("5");
testList.Insert(3, "3");
List <string> actual = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}