public void CapacityShouldNotBeZero()
{
Assert.Throws <ArgumentOutOfRangeException>(() =>
{
var a = new AccumulatingCircularBuffer <long, long>(0, new SumAccumulator());
});
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="capacity">Number of windows over which to calculate the average bandwidth</param>
public BandwidthCalculator(int capacity)
{
if (capacity < 1)
{
throw new ArgumentOutOfRangeException("capacity");
}
previousBytesTransferred = new AccumulatingCircularBuffer <long, float>(capacity, new AverageAccumulator());
}
public void TestBufferWithAverageAccumulator()
{
var a = new AccumulatingCircularBuffer <long, float>(4, new AverageAccumulator());
CheckBuffer(a, new long[] { }, 0f);
a.Add(10);
CheckBuffer(a, new long[] { 10 }, 10f);
a.Add(21);
CheckBuffer(a, new long[] { 10, 21 }, 15.5f);
a.Add(30);
CheckBuffer(a, new long[] { 10, 21, 30 }, 61 / 3f);
a.Add(40);
CheckBuffer(a, new long[] { 10, 21, 30, 40 }, 25.25f);
a.Add(50);
CheckBuffer(a, new long[] { 21, 30, 40, 50 }, 35.25f);
}
public void TestBufferWithSumAccumulator()
{
var a = new AccumulatingCircularBuffer <long, long>(3, new SumAccumulator());
CheckBuffer(a, new long[] { }, 0);
a.Add(10);
CheckBuffer(a, new long[] { 10 }, 10);
a.Add(20);
CheckBuffer(a, new long[] { 10, 20 }, 30);
a.Add(30);
CheckBuffer(a, new long[] { 10, 20, 30 }, 60);
a.Add(40);
CheckBuffer(a, new long[] { 20, 30, 40 }, 90);
a.Add(50);
CheckBuffer(a, new long[] { 30, 40, 50 }, 120);
}
public void TestAddN()
{
var a = new AccumulatingCircularBuffer <long, long>(3, new SumAccumulator());
CheckBuffer(a, new long[] { }, 0);
a.AddN(0);
CheckBuffer(a, new long[] { }, 0);
a.AddN(1);
CheckBuffer(a, new long[] { 0 }, 0);
a.Add(10);
a.Add(20);
a.Add(30);
CheckBuffer(a, new long[] { 10, 20, 30 }, 60);
a.AddN(1);
CheckBuffer(a, new long[] { 20, 30, 0 }, 50);
a.Add(10);
a.Add(20);
a.Add(30);
CheckBuffer(a, new long[] { 10, 20, 30 }, 60);
a.AddN(2);
CheckBuffer(a, new long[] { 30, 0, 0 }, 30);
a.Add(10);
a.Add(20);
a.Add(30);
CheckBuffer(a, new long[] { 10, 20, 30 }, 60);
a.AddN(3);
CheckBuffer(a, new long[] { 0, 0, 0 }, 0);
// Test that adding a huge number is optimised away
a.Add(10);
a.Add(20);
a.Add(30);
CheckBuffer(a, new long[] { 10, 20, 30 }, 60);
a.AddN(long.MaxValue);
CheckBuffer(a, new long[] { 0, 0, 0 }, 0);
}
private void CheckBuffer(AccumulatingCircularBuffer <long, float> buffer, long[] values, float accumulatedValue)
{
CollectionAssert.AreEqual(values, buffer.ToArray());
Assert.AreEqual(accumulatedValue, buffer.AccumulatedValue());
}