void TestBoundedBlockingQueueCopy()
{
BoundedBlockingQueue <TestQueueItem> bbq = new BoundedBlockingQueue <TestQueueItem>(3);
bbq.Enqueue(new TestQueueItem {
Value = 100
});
bbq.Enqueue(new TestQueueItem {
Value = 200
});
bbq.Enqueue(new TestQueueItem {
Value = 300
});
var values = bbq.Values;
TestQueueItem[] copyArray = new TestQueueItem[bbq.Size];
bbq.CopyTo(copyArray, 0);
foreach (var item in copyArray)
{
Assert.Contains(item, bbq);
Assert.Contains(item, values);
}
}
private void Verify(TestQueueItem item)
{
Assert.NotNull(item);
_id = _counter / _consumersPerProducer;
Assert.Equal(_id, item.Id);
Assert.Equal($"Item{_id}", item.Name);
++_counter;
}
public static bool IsLessThan(TestQueueItem a, TestQueueItem b)
{
return(a.Value < b.Value);
}
async void TestBoundedBlockingQueueEnqueueDequeue()
{
BoundedBlockingQueue <TestQueueItem> bbq = new BoundedBlockingQueue <TestQueueItem>(2);
Assert.Equal(0, bbq.Count);
Assert.Equal(2, bbq.Size);
Assert.Throws <ArgumentNullException>(() =>
{
bbq.Enqueue(null);
});
Assert.Equal(0, bbq.Count);
Assert.False(bbq.TryEnqueue(null));
Assert.Equal(0, bbq.Count);
bbq.Enqueue(new TestQueueItem {
Value = 100
});
bbq.Enqueue(new TestQueueItem {
Value = 200
});
Assert.Equal(2, bbq.Count);
Assert.Throws <TimeoutException>(() => bbq.Enqueue(new TestQueueItem {
Value = 300
}, 1000));
Assert.Equal(2, bbq.Count);
Assert.False(bbq.TryEnqueue(new TestQueueItem {
Value = 300
}, 1000));
Assert.Equal(2, bbq.Count);
var item100 = bbq.Dequeue();
Assert.Equal(2, bbq.Size);
Assert.Equal(1, bbq.Count);
Assert.Equal(100, item100.Value);
bbq.Enqueue(new TestQueueItem {
Value = 500
}, 1000);
Assert.Equal(2, bbq.Count);
var item200 = bbq.Dequeue();
Assert.Equal(200, item200.Value);
Assert.Equal(1, bbq.Count);
bbq.Enqueue(new TestQueueItem {
Value = 400
});
Task.Run(() =>
{
bbq.Enqueue(new TestQueueItem {
Value = 600
});
});
await Task.Delay(1000); //allow enough time for task to set up
var item500 = bbq.Dequeue();
await Task.Delay(1000); //allow enough time for task to enqueue 600
Assert.Equal(500, item500.Value);
Assert.Equal(2, bbq.Count); //400 and 600 should be in here
var item400 = bbq.Dequeue();
Assert.Equal(1, bbq.Count);
Assert.Equal(400, item400.Value);
bool tryDeqRes = bbq.TryDequeue(out var item600);
Assert.True(tryDeqRes);
Assert.Equal(0, bbq.Count);
Assert.Equal(600, item600.Value);
TestQueueItem itemNull = null;
Assert.Throws <TimeoutException>(() => itemNull = bbq.Dequeue(500));
Assert.Null(itemNull);
TestQueueItem item700 = null;
Task.Run(() =>
{
item700 = bbq.Dequeue();
});
await Task.Delay(1000); //allow enough time for task to set up
bbq.Enqueue(new TestQueueItem {
Value = 700
});
await Task.Delay(1000); //allow enough time for task to dequeue 700
Assert.Equal(700, item700.Value);
Assert.Equal(0, bbq.Count);
}
async void TestBoundedBlockingQueuePeek()
{
BoundedBlockingQueue <TestQueueItem> bbq = new BoundedBlockingQueue <TestQueueItem>(1);
Assert.Equal(0, bbq.Count);
bool tryPeekEmpty = bbq.TryPeek(out var testQueueItem);
Assert.False(tryPeekEmpty);
Assert.Null(testQueueItem);
TestQueueItem emptyItem = null;
Assert.Throws <InvalidOperationException>(() => emptyItem = bbq.Peek());
Assert.Null(emptyItem);
Assert.Throws <TimeoutException>(() => emptyItem = bbq.Peek(500, true));
Assert.Null(emptyItem);
Assert.Equal(0, bbq.Count);
bbq.Enqueue(new TestQueueItem {
Value = 100
});
Assert.Equal(1, bbq.Count);
var item100Peek = bbq.Peek();
Assert.Equal(1, bbq.Count);
Assert.Equal(100, item100Peek.Value);
var item100 = bbq.Dequeue();
Assert.Equal(0, bbq.Count);
Assert.Equal(100, item100.Value);
bool exceptionThrown = false;
TestQueueItem item200 = null;
Task.Run(() =>
{
try
{
item200 = bbq.Peek(5000, true);
}
catch
{
exceptionThrown = true;
}
});
bbq.Enqueue(new TestQueueItem {
Value = 200
});
await Task.Delay(2000);
Assert.Equal(1, bbq.Count);
Assert.Equal(200, item200.Value);
Assert.False(exceptionThrown);
bool tryPeekRes = bbq.TryPeek(out var item200TryPeek);
Assert.Equal(1, bbq.Count);
Assert.True(tryPeekRes);
Assert.Equal(200, item200.Value);
}
async void TestBoundedBlockingQueueClearMultipleWaitingThreads()
{
BoundedBlockingQueue <TestQueueItem> bbq = new BoundedBlockingQueue <TestQueueItem>(3);
var item100 = new TestQueueItem {
Value = 100
};
var item200 = new TestQueueItem {
Value = 200
};
var item300 = new TestQueueItem {
Value = 300
};
var item400 = new TestQueueItem {
Value = 400
};
var item500 = new TestQueueItem {
Value = 500
};
var item600 = new TestQueueItem {
Value = 600
};
bbq.Enqueue(item100);
bbq.Enqueue(item200);
bbq.Enqueue(item300);
Assert.Equal(3, bbq.Count);
var values = bbq.Values;
Assert.Equal(3, values.Length);
Assert.Contains(item100, values);
Assert.Contains(item200, values);
Assert.Contains(item300, values);
Assert.Contains(item100, bbq);
Assert.Contains(item200, bbq);
Assert.Contains(item300, bbq);
bool exceptionThrown = false;
Task.Run(() =>
{
try
{
bbq.Enqueue(item400);
}
catch
{
exceptionThrown = true;
}
});
Task.Run(() =>
{
try
{
bbq.Enqueue(item500);
}
catch
{
exceptionThrown = true;
}
});
Task.Run(() =>
{
try
{
bbq.Enqueue(item600);
}
catch
{
exceptionThrown = true;
}
});
await Task.Delay(1000);
Assert.False(exceptionThrown);
bbq.Clear();
await Task.Delay(1000);
values = bbq.Values;
Assert.Equal(3, values.Length);
Assert.Equal(3, bbq.Count);
Assert.Contains(item400, values);
Assert.Contains(item500, values);
Assert.Contains(item600, values);
Assert.Contains(item400, bbq);
Assert.Contains(item500, bbq);
Assert.Contains(item500, bbq);
}