| #region Copyright notice and license |
| |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #endregion |
| |
| using System; |
| using System.Collections.Generic; |
| using System.IO; |
| using System.Linq; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core; |
| using Grpc.Core.Utils; |
| using Grpc.Testing; |
| using NUnit.Framework; |
| |
| namespace Grpc.IntegrationTesting |
| { |
| public class HistogramTest |
| { |
| [Test] |
| public void Simple() |
| { |
| var hist = new Histogram(0.01, 60e9); |
| hist.AddObservation(10000); |
| hist.AddObservation(10000); |
| hist.AddObservation(11000); |
| hist.AddObservation(11000); |
| |
| var data = hist.GetSnapshot(); |
| |
| Assert.AreEqual(4, data.Count); |
| Assert.AreEqual(42000.0, data.Sum, 1e-6); |
| Assert.AreEqual(10000, data.MinSeen); |
| Assert.AreEqual(11000, data.MaxSeen); |
| Assert.AreEqual(2.0*10000*10000 + 2.0*11000*11000, data.SumOfSquares, 1e-6); |
| |
| // 1.01^925 < 10000 < 1.01^926 |
| Assert.AreEqual(2, data.Bucket[925]); |
| Assert.AreEqual(2, data.Bucket[935]); |
| } |
| |
| [Test] |
| public void ExtremeObservations() |
| { |
| var hist = new Histogram(0.01, 60e9); |
| hist.AddObservation(-0.5); // should be in the first bucket |
| hist.AddObservation(1e12); // should be in the last bucket |
| |
| var data = hist.GetSnapshot(); |
| Assert.AreEqual(1, data.Bucket[0]); |
| Assert.AreEqual(1, data.Bucket[data.Bucket.Count - 1]); |
| } |
| |
| [Test] |
| public void Reset() |
| { |
| var hist = new Histogram(0.01, 60e9); |
| hist.AddObservation(10000); |
| hist.AddObservation(11000); |
| |
| var data = hist.GetSnapshot(true); // snapshot contains data before reset |
| Assert.AreEqual(2, data.Count); |
| Assert.AreEqual(10000, data.MinSeen); |
| Assert.AreEqual(11000, data.MaxSeen); |
| |
| data = hist.GetSnapshot(); // snapshot contains state after reset |
| Assert.AreEqual(0, data.Count); |
| Assert.AreEqual(double.PositiveInfinity, data.MinSeen); |
| Assert.AreEqual(double.NegativeInfinity, data.MaxSeen); |
| Assert.AreEqual(0, data.Sum); |
| Assert.AreEqual(0, data.SumOfSquares); |
| CollectionAssert.AreEqual(new uint[data.Bucket.Count], data.Bucket); |
| } |
| } |
| } |