public static void PeekTest()
{
var array = new UnmanagedArray <int>(3);
array[0] = 1;
array[1] = 2;
array[2] = 3;
using (var valueQueue = new UnmanagedValueQueue <int>(array, takeOwnership: true))
{
Assert.That(() => valueQueue.Peek(),
Is.EqualTo(1)
);
valueQueue.Enqueue(4);
Assert.That(() => valueQueue.Peek(),
Is.EqualTo(1)
);
_ = valueQueue.Dequeue();
valueQueue.Enqueue(5);
Assert.That(() => valueQueue.Peek(),
Is.EqualTo(2)
);
_ = valueQueue.Dequeue();
valueQueue.Enqueue(6);
valueQueue.Enqueue(7);
Assert.That(() => valueQueue.Peek(),
Is.EqualTo(3)
);
Assert.That(() => valueQueue,
Has.Property("Capacity").EqualTo((nuint)6)
.And.Count.EqualTo((nuint)5)
);
}
using (var valueQueue = new UnmanagedValueQueue <int>())
{
Assert.That(() => valueQueue.Peek(),
Throws.InvalidOperationException
);
}
}
public static void PeekNUIntTest()
{
var array = new UnmanagedArray <int>(3);
array[0] = 1;
array[1] = 2;
array[2] = 3;
using (var valueQueue = new UnmanagedValueQueue <int>(array, takeOwnership: true))
{
Assert.That(() => valueQueue.Peek(0),
Is.EqualTo(1)
);
valueQueue.Enqueue(4);
Assert.That(() => valueQueue.Peek(0),
Is.EqualTo(1)
);
Assert.That(() => valueQueue.Peek(3),
Is.EqualTo(4)
);
_ = valueQueue.Dequeue();
valueQueue.Enqueue(5);
Assert.That(() => valueQueue.Peek(0),
Is.EqualTo(2)
);
Assert.That(() => valueQueue.Peek(1),
Is.EqualTo(3)
);
_ = valueQueue.Dequeue();
valueQueue.Enqueue(6);
valueQueue.Enqueue(7);
Assert.That(() => valueQueue.Peek(0),
Is.EqualTo(3)
);
Assert.That(() => valueQueue.Peek(2),
Is.EqualTo(5)
);
Assert.That(() => valueQueue,
Has.Property("Capacity").EqualTo((nuint)6)
.And.Count.EqualTo((nuint)5)
);
}
using (var valueQueue = new UnmanagedValueQueue <int>())
{
Assert.That(() => valueQueue.Peek(0),
Throws.InstanceOf <ArgumentOutOfRangeException>()
.And.Property("ActualValue").EqualTo((nuint)0)
.And.Property("ParamName").EqualTo("index")
);
}
}