public void CanContains()
{
var q = new CappedQueue <int>(3);
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
q.Enqueue(4);
Assert.False(q.Contains(1));
Assert.True(q.Contains(2));
Assert.True(q.Contains(3));
Assert.True(q.Contains(4));
Assert.False(q.Contains(5));
var qq = new CappedQueue <string>(3);
qq.Enqueue("one");
qq.Enqueue("two");
qq.Enqueue(null);
Assert.True(qq.Contains("one"));
Assert.True(qq.Contains("two"));
Assert.True(qq.Contains(null));
Assert.False(qq.Contains("three"));
}
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 Foo2()
{
var queue = new CappedQueue<int>(5);
queue.Enqueue(10);
queue.Enqueue(20);
queue.Enqueue(30);
var average = queue.Average(x=>x);
}
public void CanCreate()
{
var q = new CappedQueue <int>(1);
Assert.Equal(1, q.Capacity);
Assert.Equal(0, q.Count);
Assert.Throws <ArgumentOutOfRangeException>(() => new CappedQueue <int>(0));
Assert.Throws <ArgumentOutOfRangeException>(() => new CappedQueue <int>(-1));
}
public void Foo2()
{
var queue = new CappedQueue<int>(5);
queue.Enqueue(10);
queue.Enqueue(20);
queue.Enqueue(30);
var average = queue.Sum() / queue.Count();
}
public void Foo()
{
var queue = new CappedQueue<DateTime>(5);
queue.Enqueue(DateTime.Now); // each time the user press the key
queue.Enqueue(DateTime.Now); // each time the user press the key
queue.Enqueue(DateTime.Now); // each time the user press the key
TimeSpan diff = (queue.Last() / queue.Fisrt())/queue.Count();
}
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 CanCopyTo()
{
var q = new CappedQueue <int>(3);
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
var array = new int[5];
q.CopyTo(array, 2);
const int zero = default(int);
Assert.Equal(Seq(zero, zero, 1, 2, 3), array);
}
public void CanClear()
{
var q = new CappedQueue <int>(3);
q.Enqueue(1);
q.Enqueue(2);
q.Enqueue(3);
q.Enqueue(4);
q.Clear();
q.Clear(); // idempotent
Assert.Equal(0, q.Count);
Assert.Equal(3, q.Capacity);
}
public void CanEnumerate()
{
var q = new CappedQueue <int>(3);
Assert.Empty(q);
q.Enqueue(1);
Assert.Single(q, 1);
q.Enqueue(2);
Assert.Equal(Seq(1, 2), q);
q.Enqueue(3);
Assert.Equal(Seq(1, 2, 3), q);
q.Enqueue(4);
Assert.Equal(Seq(2, 3, 4), q);
}
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));
}
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));
}
