public void SetCountLimit_Throw()
{
var sut = new CappedQueue <MyItem>(i => i == null ? 0 : i.Name == null ? 0 : i.Name.Length);
sut.CountLimit = 3;
sut.Handling = QueueLimitHandling.Throw;
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Cat"
}));
Aver.AreEqual(1, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Dog"
}));
Aver.AreEqual(2, sut.Count);
Aver.IsTrue(sut.TryEnqueue(null));
Aver.AreEqual(3, sut.Count);
try
{
//Rabbit will not fit - will throw
Aver.IsFalse(sut.TryEnqueue(new MyItem {
Name = "Rabbit"
}));
}
catch (AzosException error)
{
Aver.IsTrue(error.Message.Contains("limit is reached"));
Conout.WriteLine("Expected and got: " + error.ToMessageWithType());
return;
}
Aver.Fail("No expected exception");
}
public void SetCountLimit_DiscardNew()
{
var sut = new CappedQueue <MyItem>(i => i == null ? 0 : i.Name == null ? 0 : i.Name.Length);
sut.CountLimit = 3;
sut.Handling = QueueLimitHandling.DiscardNew;
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Cat"
}));
Aver.AreEqual(1, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Dog"
}));
Aver.AreEqual(2, sut.Count);
Aver.IsTrue(sut.TryEnqueue(null));
Aver.AreEqual(3, sut.Count);
//Rabbit will not fit - return FALSE
Aver.IsFalse(sut.TryEnqueue(new MyItem {
Name = "Rabbit"
}));
Aver.AreEqual(3, sut.Count);
//1st is Dog because Cat was removed
Aver.AreEqual(3, sut.EnqueuedCount);
Aver.AreEqual(3 + 3, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out var got));
Aver.IsNotNull(got);
Aver.AreEqual("Cat", got.Name);
Aver.AreEqual(2, sut.EnqueuedCount);
Aver.AreEqual(3, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Dog", got.Name);
Aver.AreEqual(1, sut.EnqueuedCount);
Aver.AreEqual(0, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNull(got);
Aver.AreEqual(0, sut.EnqueuedCount);
Aver.AreEqual(0, sut.EnqueuedSize);
//Rabbit was lost
Aver.IsFalse(sut.TryPeek(out got));
Aver.IsFalse(sut.TryDequeue(out got));
}
public void SetCountLimit_DefaultHandling()
{
var sut = new CappedQueue <MyItem>(i => i == null ? 0 : i.Name == null ? 0 : i.Name.Length);
sut.CountLimit = 3;
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Cat"
}));
Aver.AreEqual(1, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Dog"
}));
Aver.AreEqual(2, sut.Count);
Aver.IsTrue(sut.TryEnqueue(null));
Aver.AreEqual(3, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Rabbit"
}));
Aver.AreEqual(3, sut.Count);
//1st is Dog because Cat was removed
Aver.AreEqual(3, sut.EnqueuedCount);
Aver.AreEqual(3 + 6, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out var got));
Aver.IsNotNull(got);
Aver.AreEqual("Dog", got.Name);
Aver.AreEqual(2, sut.EnqueuedCount);
Aver.AreEqual(6, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNull(got);
Aver.AreEqual(1, sut.EnqueuedCount);
Aver.AreEqual(6, sut.EnqueuedSize);
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Rabbit", got.Name);
Aver.AreEqual(0, sut.EnqueuedCount);
Aver.AreEqual(0, sut.EnqueuedSize);
Aver.IsFalse(sut.TryPeek(out got));
Aver.IsFalse(sut.TryDequeue(out got));
}
public void BasicQueueFunctions()
{
var sut = new CappedQueue <MyItem>(i => i == null ? 0 : i.Name == null ? 0 : i.Name.Length);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Cat"
}));
Aver.AreEqual(1, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Dog"
}));
Aver.AreEqual(2, sut.Count);
Aver.IsTrue(sut.TryEnqueue(null));
Aver.AreEqual(3, sut.Count);
Aver.IsTrue(sut.TryEnqueue(new MyItem {
Name = "Bird"
}));
Aver.AreEqual(4, sut.Count);
Aver.AreEqual(4, ((IEnumerable <MyItem>)sut).Count());
Aver.AreEqual(4, sut.EnqueuedCount);
Aver.AreEqual(3 + 3 + 4, sut.EnqueuedSize);
//1st time
Aver.IsTrue(sut.TryPeek(out var got));
Aver.IsNotNull(got);
Aver.AreEqual("Cat", got.Name);
//2nd time peek
Aver.IsTrue(sut.TryPeek(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Cat", got.Name);
//3rd time dequeue
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Cat", got.Name);
Aver.AreEqual(3, sut.EnqueuedCount);
Aver.AreEqual(3 + 4, sut.EnqueuedSize);
//4th time peek
Aver.IsTrue(sut.TryPeek(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Dog", got.Name);
//5th time dequeue
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Dog", got.Name);
Aver.AreEqual(2, sut.EnqueuedCount);
Aver.AreEqual(4, sut.EnqueuedSize);
//6th time dequeue
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNull(got);
Aver.AreEqual(1, sut.EnqueuedCount);
Aver.AreEqual(4, sut.EnqueuedSize);
//7th time dequeue the last
Aver.IsTrue(sut.TryDequeue(out got));
Aver.IsNotNull(got);
Aver.AreEqual("Bird", got.Name);
Aver.AreEqual(0, sut.EnqueuedCount);
Aver.AreEqual(0, sut.EnqueuedSize);
Aver.IsFalse(sut.TryPeek(out got));
Aver.IsFalse(sut.TryDequeue(out got));
}