public void DeleteInEmptyList_IndexOutOfRangeExeption()
{
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
Assert.ThrowsException <IndexOutOfRangeException>(
() => testList.DeleteAtIndex(1));
}
public void DeleteAtIndex_IndexOutOfRangeException(int index)
{
DoublyLinkedList <string> testList = new DoublyLinkedList <string>("1", "2", "3", "4", "5");
Xunit.Assert.Throws <IndexOutOfRangeException>(
() => testList.DeleteAtIndex(index));
}
public void DeleteOneMiddleAndOneLastElements_ElementsAreDeletedCorrectly_FromTail()
{
List <string> expected = new List <string> {
"4", "2", "1"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("3");
testList.AddToTail("4");
testList.AddToTail("5");
testList.DeleteAtIndex(3);
testList.DeleteAtIndex(4);
List <string> actual = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}
public void DeleteTheOnlyExistedElement_TheListIsEmpty_FromTail()
{
List <string> expected = new List <string> {
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.DeleteAtIndex(1);
List <string> actual = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}
public void DeleteAtIndex_TheRightElementIsDeleted(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.DeleteAtIndex(value);
expected.RemoveAt(value - 1);
List <string> actualNextLinks = CheckNextLinks(testList);
List <string> actualPreviousLinks = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(actualNextLinks, expected);
expected.Reverse();
CollectionAssert.AreEqual(actualPreviousLinks, expected);
}
public void DeleteOneMiddleElement_ElementIsDeletedCorrectly_FromHead()
{
List <string> expected = new List <string> {
"1", "2", "4", "5"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("3");
testList.AddToTail("4");
testList.AddToTail("5");
testList.DeleteAtIndex(3);
List <string> actual = CheckNextLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}