| #region Copyright notice and license |
| |
| // Copyright 2015 gRPC authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #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 MergeSnapshots() |
| { |
| var data = new HistogramData(); |
| |
| var hist1 = new Histogram(0.01, 60e9); |
| hist1.AddObservation(-0.5); // should be in the first bucket |
| hist1.AddObservation(1e12); // should be in the last bucket |
| hist1.GetSnapshot(data, false); |
| |
| var hist2 = new Histogram(0.01, 60e9); |
| hist2.AddObservation(10000); |
| hist2.AddObservation(11000); |
| hist2.GetSnapshot(data, false); |
| |
| Assert.AreEqual(4, data.Count); |
| Assert.AreEqual(-0.5, data.MinSeen); |
| Assert.AreEqual(1e12, data.MaxSeen); |
| Assert.AreEqual(1, data.Bucket[0]); |
| Assert.AreEqual(1, data.Bucket[925]); |
| Assert.AreEqual(1, data.Bucket[935]); |
| 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); |
| } |
| } |
| } |