public void CanEnqueue()
{
var q1 = new CappedQueue <int>(1);
q1.Enqueue(1);
Assert.Equal(1, q1.Count);
Assert.Equal(1, q1.GetElement(0));
q1.Enqueue(2);
Assert.Equal(1, q1.Count);
Assert.Equal(2, q1.GetElement(0));
var q2 = new CappedQueue <int>(2);
q2.Enqueue(1);
q2.Enqueue(2);
q2.Enqueue(3);
Assert.Equal(2, q2.Count);
Assert.Equal(2, q2.GetElement(0));
Assert.Equal(3, q2.GetElement(1));
}
public void CanSetCapacity()
{
var q = new CappedQueue <int>(1);
q.Capacity = 2; // enlarge empty queue
Assert.Equal(0, q.Count);
Assert.Equal(2, q.Capacity);
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
Assert.Equal(2, q.GetElement(0));
Assert.Equal(3, q.GetElement(1));
q.Capacity = 3; // enlarge
Assert.Equal(3, q.Capacity);
Assert.Equal(2, q.Count);
Assert.Equal(2, q.GetElement(0));
Assert.Equal(3, q.GetElement(1));
q.Enqueue(4);
Assert.Equal(3, q.Count);
Assert.Equal(2, q.GetElement(0));
Assert.Equal(3, q.GetElement(1));
Assert.Equal(4, q.GetElement(2));
q.Capacity = 2; // shrink
Assert.Equal(2, q.Capacity);
Assert.Equal(2, q.Count);
Assert.Equal(3, q.GetElement(0));
Assert.Equal(4, q.GetElement(1));
}
