public void RemoveFirst_SeveralElements_ShouldRemoveElementsCorrectly()
{
// Arrange
var list = new DoublyLinkedList <int>();
list.AddLast(5);
list.AddLast(6);
list.AddLast(7);
// Act
var element = list.RemoveFirst();
// Assert
Assert.Equal(5, element);
Assert.Equal(2, list.Count);
var items = new List <int>();
list.ForEach(items.Add);
Assert.Equal(items, new List <int> {
6, 7
});
}
public void IEnumerable_NonGeneric_MultipleElements()
{
// Arrange
var list = new DoublyLinkedList <object>();
list.AddLast("Five");
list.AddLast(6);
list.AddLast(7.77);
// Act
var enumerator = ((IEnumerable)list).GetEnumerator();
var items = new List <object>();
while (enumerator.MoveNext())
{
items.Add(enumerator.Current);
}
// Assert
Assert.Equal(items, new List <object>()
{
"Five", 6, 7.77
});
}
public void ForEach_SingleElement_ShouldEnumerateElementsCorrectly()
{
// Arrange
var list = new DoublyLinkedList <int>();
list.AddLast(5);
// Act
var items = new List <int>();
list.ForEach(items.Add);
// Assert
Assert.Equal(items, new List <int> {
5
});
}
public void AddLast_EmptyList_ShouldAddElement()
{
// Arrange
var list = new DoublyLinkedList <int>();
// Act
list.AddLast(5);
// Assert
Assert.Equal(1, list.Count);
var items = new List <int>();
list.ForEach(items.Add);
Assert.Equal(items, new List <int> {
5
});
}
public void RemoveFirst_OneElement_ShouldMakeListEmpty()
{
// Arrange
var list = new DoublyLinkedList <int>();
list.AddLast(5);
// Act
var element = list.RemoveFirst();
// Assert
Assert.Equal(5, element);
Assert.Equal(0, list.Count);
var items = new List <int>();
list.ForEach(items.Add);
Assert.Equal(items, new List <int> {
});
}
