1 #region Copyright notice and license 2 3 // Copyright 2015 gRPC authors. 4 // 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 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 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. 16 17 #endregion 18 19 using System; 20 using System.Runtime.InteropServices; 21 using Grpc.Core.Internal; 22 using Grpc.Core.Utils; 23 using NUnit.Framework; 24 25 namespace Grpc.Core.Internal.Tests 26 { 27 public class TimespecTest 28 { 29 [Test] Now_IsInUtc()30 public void Now_IsInUtc() 31 { 32 Assert.AreEqual(DateTimeKind.Utc, Timespec.Now.ToDateTime().Kind); 33 } 34 35 [Test] Now_AgreesWithUtcNow()36 public void Now_AgreesWithUtcNow() 37 { 38 var timespec = Timespec.Now; 39 var utcNow = DateTime.UtcNow; 40 41 TimeSpan difference = utcNow - timespec.ToDateTime(); 42 43 // This test is inherently a race - but the two timestamps 44 // should really be way less that a minute apart. 45 Assert.IsTrue(difference.TotalSeconds < 60); 46 } 47 48 [Test] InfFutureMatchesNativeValue()49 public void InfFutureMatchesNativeValue() 50 { 51 Assert.AreEqual(Timespec.NativeInfFuture, Timespec.InfFuture); 52 } 53 54 [Test] InfPastMatchesNativeValue()55 public void InfPastMatchesNativeValue() 56 { 57 Assert.AreEqual(Timespec.NativeInfPast, Timespec.InfPast); 58 } 59 60 [Test] TimespecSizeIsNativeSize()61 public void TimespecSizeIsNativeSize() 62 { 63 #pragma warning disable 0618 64 // We need to use the obsolete non-generic version of Marshal.SizeOf because the generic version is not available in net45 65 Assert.AreEqual(Timespec.NativeSize, Marshal.SizeOf(typeof(Timespec))); 66 #pragma warning restore 0618 67 } 68 69 [Test] ToDateTime()70 public void ToDateTime() 71 { 72 Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), 73 new Timespec(0, 0).ToDateTime()); 74 75 Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 10, DateTimeKind.Utc).AddTicks(50), 76 new Timespec(10, 5000).ToDateTime()); 77 78 Assert.AreEqual(new DateTime(2015, 7, 21, 4, 21, 48, DateTimeKind.Utc), 79 new Timespec(1437452508, 0).ToDateTime()); 80 81 // before epoch 82 Assert.AreEqual(new DateTime(1969, 12, 31, 23, 59, 55, DateTimeKind.Utc).AddTicks(10), 83 new Timespec(-5, 1000).ToDateTime()); 84 85 // infinity 86 Assert.AreEqual(DateTime.MaxValue, Timespec.InfFuture.ToDateTime()); 87 Assert.AreEqual(DateTime.MinValue, Timespec.InfPast.ToDateTime()); 88 89 // nanos are rounded to ticks are rounded up 90 Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddTicks(1), 91 new Timespec(0, 99).ToDateTime()); 92 93 // Illegal inputs 94 Assert.Throws(typeof(InvalidOperationException), 95 () => new Timespec(0, -2).ToDateTime()); 96 Assert.Throws(typeof(InvalidOperationException), 97 () => new Timespec(0, 1000 * 1000 * 1000).ToDateTime()); 98 Assert.Throws(typeof(InvalidOperationException), 99 () => new Timespec(0, 0, ClockType.Monotonic).ToDateTime()); 100 } 101 102 [Test] ToDateTime_ReturnsUtc()103 public void ToDateTime_ReturnsUtc() 104 { 105 Assert.AreEqual(DateTimeKind.Utc, new Timespec(1437452508, 0).ToDateTime().Kind); 106 Assert.AreNotEqual(DateTimeKind.Unspecified, new Timespec(1437452508, 0).ToDateTime().Kind); 107 } 108 109 [Test] ToDateTime_Overflow()110 public void ToDateTime_Overflow() 111 { 112 var timespec = new Timespec(long.MaxValue - 100, 0); 113 Assert.AreNotEqual(Timespec.InfFuture, timespec); 114 Assert.AreEqual(DateTime.MaxValue, timespec.ToDateTime()); 115 116 Assert.AreEqual(DateTime.MinValue, new Timespec(long.MinValue + 100, 0).ToDateTime()); 117 } 118 119 [Test] ToDateTime_OutOfDateTimeRange()120 public void ToDateTime_OutOfDateTimeRange() 121 { 122 // DateTime range goes up to year 9999, 20000 years from now should 123 // be out of range. 124 long seconds = 20000L * 365L * 24L * 3600L; 125 126 var timespec = new Timespec(seconds, 0); 127 Assert.AreNotEqual(Timespec.InfFuture, timespec); 128 Assert.AreEqual(DateTime.MaxValue, timespec.ToDateTime()); 129 130 Assert.AreEqual(DateTime.MinValue, new Timespec(-seconds, 0).ToDateTime()); 131 } 132 133 [Test] FromDateTime()134 public void FromDateTime() 135 { 136 Assert.AreEqual(new Timespec(0, 0), 137 Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc))); 138 139 Assert.AreEqual(new Timespec(10, 5000), 140 Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 10, DateTimeKind.Utc).AddTicks(50))); 141 142 Assert.AreEqual(new Timespec(1437452508, 0), 143 Timespec.FromDateTime(new DateTime(2015, 7, 21, 4, 21, 48, DateTimeKind.Utc))); 144 145 // before epoch 146 Assert.AreEqual(new Timespec(-5, 1000), 147 Timespec.FromDateTime(new DateTime(1969, 12, 31, 23, 59, 55, DateTimeKind.Utc).AddTicks(10))); 148 149 // infinity 150 Assert.AreEqual(Timespec.InfFuture, Timespec.FromDateTime(DateTime.MaxValue)); 151 Assert.AreEqual(Timespec.InfPast, Timespec.FromDateTime(DateTime.MinValue)); 152 153 // illegal inputs 154 Assert.Throws(typeof(ArgumentException), 155 () => Timespec.FromDateTime(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Unspecified))); 156 } 157 158 [Test] 159 [Category("Performance")] 160 [Ignore("Prevent running on Jenkins")] NowBenchmark()161 public void NowBenchmark() 162 { 163 // approx Timespec.Now latency <33ns 164 BenchmarkUtil.RunBenchmark(10000000, 1000000000, () => { var now = Timespec.Now; }); 165 } 166 167 [Test] 168 [Category("Performance")] 169 [Ignore("Prevent running on Jenkins")] PreciseNowBenchmark()170 public void PreciseNowBenchmark() 171 { 172 // approx Timespec.PreciseNow latency <18ns (when compiled with GRPC_TIMERS_RDTSC) 173 BenchmarkUtil.RunBenchmark(10000000, 1000000000, () => { var now = Timespec.PreciseNow; }); 174 } 175 } 176 } 177