public void Dequeue_QueueContainsSeveralElements_DeletesReturnedElement()
{
//
// Arrange.
//
bool expectedResult = false;
bool actualResult = false;
string firstElement = "First";
QueueThroughLinkedList <string> queue = new QueueThroughLinkedList <string>();
queue.Enqueue(firstElement);
queue.Enqueue("Second");
queue.Enqueue("Third");
//
// Act.
//
queue.Dequeue();
string[] arrayOfLeftItems = new string[]
{
queue.Dequeue(),
queue.Dequeue()
};
actualResult = arrayOfLeftItems.Contains(firstElement);
//
// Assert.
//
Assert.AreEqual(expectedResult, actualResult);
}
public void Dequeue_QueueIsEmpty_ThrowsInvalidOperationException()
{
//
// Arrange.
//
QueueThroughLinkedList <string> queue = new QueueThroughLinkedList <string>();
//
// Act.
//
queue.Dequeue();
}
public void Dequeue_QueueContainsSeveralElements_ReturnsFirstElement()
{
//
// Arrange.
//
string expectedResult = "First";
string actualResult = string.Empty;
QueueThroughLinkedList <string> queue = new QueueThroughLinkedList <string>();
queue.Enqueue(expectedResult);
queue.Enqueue("Second");
queue.Enqueue("Third");
//
// Act.
//
actualResult = queue.Dequeue();
//
// Assert.
//
Assert.AreEqual(expectedResult, actualResult);
}