public void GetTheFirstElementInEmptyList_OutOfRangeException()
{
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
Assert.ThrowsException <IndexOutOfRangeException>(
() => testList.FirstElement());
}
public void GetTheOnlyFirstElement_TheElementIsGotten()
{
string expected = "1";
DoublyLinkedList <string> testList = new DoublyLinkedList <string>("1");
string actual = testList.FirstElement();
Xunit.Assert.Equal(expected, actual);
}
public void GetTheFirstElement_TheRightElementIsGotten()
{
string expected = "1";
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("3");
testList.AddToTail("4");
testList.AddToTail("5");
string actual = testList.FirstElement();
Assert.AreEqual(expected, actual);
}
