Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 1 | #region Copyright notice and license |
| 2 | |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 3 | // Copyright 2015 gRPC authors. |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 4 | // |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 5 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | // you may not use this file except in compliance with the License. |
| 7 | // You may obtain a copy of the License at |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 8 | // |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 9 | // http://www.apache.org/licenses/LICENSE-2.0 |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 10 | // |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 11 | // Unless required by applicable law or agreed to in writing, software |
| 12 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | // See the License for the specific language governing permissions and |
| 15 | // limitations under the License. |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 16 | |
| 17 | #endregion |
| 18 | |
| 19 | using System; |
| 20 | using System.Collections.Generic; |
| 21 | using System.IO; |
| 22 | using System.Linq; |
| 23 | using System.Threading; |
| 24 | using System.Threading.Tasks; |
| 25 | using Grpc.Core; |
| 26 | using Grpc.Core.Utils; |
| 27 | using Grpc.Testing; |
| 28 | using NUnit.Framework; |
| 29 | |
| 30 | namespace Grpc.IntegrationTesting |
| 31 | { |
| 32 | public class HistogramTest |
| 33 | { |
| 34 | [Test] |
| 35 | public void Simple() |
| 36 | { |
| 37 | var hist = new Histogram(0.01, 60e9); |
| 38 | hist.AddObservation(10000); |
| 39 | hist.AddObservation(10000); |
| 40 | hist.AddObservation(11000); |
| 41 | hist.AddObservation(11000); |
| 42 | |
| 43 | var data = hist.GetSnapshot(); |
| 44 | |
| 45 | Assert.AreEqual(4, data.Count); |
| 46 | Assert.AreEqual(42000.0, data.Sum, 1e-6); |
| 47 | Assert.AreEqual(10000, data.MinSeen); |
| 48 | Assert.AreEqual(11000, data.MaxSeen); |
| 49 | Assert.AreEqual(2.0*10000*10000 + 2.0*11000*11000, data.SumOfSquares, 1e-6); |
| 50 | |
| 51 | // 1.01^925 < 10000 < 1.01^926 |
| 52 | Assert.AreEqual(2, data.Bucket[925]); |
| 53 | Assert.AreEqual(2, data.Bucket[935]); |
| 54 | } |
| 55 | |
| 56 | [Test] |
| 57 | public void ExtremeObservations() |
| 58 | { |
| 59 | var hist = new Histogram(0.01, 60e9); |
| 60 | hist.AddObservation(-0.5); // should be in the first bucket |
Jan Tattermusch | 19e3d3b | 2017-05-17 11:05:06 +0200 | [diff] [blame] | 61 | hist.AddObservation(1e12); // should be in the last bucket |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 62 | |
| 63 | var data = hist.GetSnapshot(); |
| 64 | Assert.AreEqual(1, data.Bucket[0]); |
| 65 | Assert.AreEqual(1, data.Bucket[data.Bucket.Count - 1]); |
| 66 | } |
| 67 | |
| 68 | [Test] |
Jan Tattermusch | 19e3d3b | 2017-05-17 11:05:06 +0200 | [diff] [blame] | 69 | public void MergeSnapshots() |
| 70 | { |
| 71 | var data = new HistogramData(); |
| 72 | |
| 73 | var hist1 = new Histogram(0.01, 60e9); |
| 74 | hist1.AddObservation(-0.5); // should be in the first bucket |
| 75 | hist1.AddObservation(1e12); // should be in the last bucket |
| 76 | hist1.GetSnapshot(data, false); |
| 77 | |
| 78 | var hist2 = new Histogram(0.01, 60e9); |
| 79 | hist2.AddObservation(10000); |
| 80 | hist2.AddObservation(11000); |
| 81 | hist2.GetSnapshot(data, false); |
| 82 | |
| 83 | Assert.AreEqual(4, data.Count); |
| 84 | Assert.AreEqual(-0.5, data.MinSeen); |
| 85 | Assert.AreEqual(1e12, data.MaxSeen); |
| 86 | Assert.AreEqual(1, data.Bucket[0]); |
| 87 | Assert.AreEqual(1, data.Bucket[925]); |
| 88 | Assert.AreEqual(1, data.Bucket[935]); |
| 89 | Assert.AreEqual(1, data.Bucket[data.Bucket.Count - 1]); |
| 90 | } |
| 91 | |
| 92 | [Test] |
Jan Tattermusch | d0c1bfa | 2015-10-22 19:14:57 -0700 | [diff] [blame] | 93 | public void Reset() |
| 94 | { |
| 95 | var hist = new Histogram(0.01, 60e9); |
| 96 | hist.AddObservation(10000); |
| 97 | hist.AddObservation(11000); |
| 98 | |
| 99 | var data = hist.GetSnapshot(true); // snapshot contains data before reset |
| 100 | Assert.AreEqual(2, data.Count); |
| 101 | Assert.AreEqual(10000, data.MinSeen); |
| 102 | Assert.AreEqual(11000, data.MaxSeen); |
| 103 | |
| 104 | data = hist.GetSnapshot(); // snapshot contains state after reset |
| 105 | Assert.AreEqual(0, data.Count); |
| 106 | Assert.AreEqual(double.PositiveInfinity, data.MinSeen); |
| 107 | Assert.AreEqual(double.NegativeInfinity, data.MaxSeen); |
| 108 | Assert.AreEqual(0, data.Sum); |
| 109 | Assert.AreEqual(0, data.SumOfSquares); |
| 110 | CollectionAssert.AreEqual(new uint[data.Bucket.Count], data.Bucket); |
| 111 | } |
| 112 | } |
| 113 | } |