public void should_throw_when_dequeue_from_empty()
{
IQueue <int> queue = new Services.Queue <int>();
Action act = () => queue.Dequeue();
act.Should().Throw <InvalidOperationException>();
}
public void should_still_contain_items_after_trydequeue()
{
IQueue <int> queue = new Services.Queue <int>();
queue.Enqueue(321);
int dequeueped;
queue.TryDequeue(out dequeueped);
Action act = () => queue.Dequeue();
act.Should().NotThrow();
}
public void should_be_empty_after_dequeueing_all_items()
{
IQueue <string> queue = new Services.Queue <string>();
var items = new[] { "Alpha", "Bravo", "Charlie", "Delta" };
foreach (string s in items)
{
queue.Enqueue(s);
}
for (int i = 0; i < items.Length; i++)
{
queue.Dequeue();
}
queue.Invoking(q => q.Dequeue()).Should().Throw <InvalidOperationException>();
}
public void should_dequeue_items_correctly(int itemCount)
{
IQueue <int> queue = new Services.Queue <int>();
int[] range = Enumerable.Range(1, itemCount).ToArray();
int[] expected = range;
foreach (int i in range)
{
queue.Enqueue(i);
}
var actual = new int[range.Length];
int index = 0;
foreach (int i in range)
{
actual[index++] = queue.Dequeue();
}
actual.Should().BeEquivalentTo(expected);
}