Add BenchmarkDotNet benchmark project and DataLoader benchmark (#159)

Co-authored-by: Matt Johnson-Pint <mattjohnsonpint@gmail.com>

Author: lahma

TimeZoneConverter.sln

@@ -24,6 +24,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TimeZoneConverter.Posix", "
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TimeZoneConverter.Posix.Tests", "test\TimeZoneConverter.Posix.Tests\TimeZoneConverter.Posix.Tests.csproj", "{3EF2A004-2823-4C13-AB04-8A7B415B49C7}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TimeZoneConverter.Benchmarks", "test\TimeZoneConverter.Benchmarks\TimeZoneConverter.Benchmarks.csproj", "{66C9F893-5C13-4B14-B870-594459EB739F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -50,6 +52,10 @@ Global
 		{3EF2A004-2823-4C13-AB04-8A7B415B49C7}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3EF2A004-2823-4C13-AB04-8A7B415B49C7}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3EF2A004-2823-4C13-AB04-8A7B415B49C7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{66C9F893-5C13-4B14-B870-594459EB739F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{66C9F893-5C13-4B14-B870-594459EB739F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{66C9F893-5C13-4B14-B870-594459EB739F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{66C9F893-5C13-4B14-B870-594459EB739F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -60,6 +66,7 @@ Global
 		{902AFB31-8432-4C34-89AB-2CFF4DD27B93} = {62E4880C-D978-413C-AB12-E74B2E47426E}
 		{6E9924D5-04AA-4063-AD77-02C68112D612} = {9C922A24-67F8-4E45-B079-130DDAC3B5A7}
 		{3EF2A004-2823-4C13-AB04-8A7B415B49C7} = {62E4880C-D978-413C-AB12-E74B2E47426E}
+		{66C9F893-5C13-4B14-B870-594459EB739F} = {62E4880C-D978-413C-AB12-E74B2E47426E}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {404E04B4-C30C-452D-8705-DDF6C17AE7D0}

src/TimeZoneConverter/TimeZoneConverter.csproj

@@ -21,4 +21,8 @@
     <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <InternalsVisibleTo Include="TimeZoneConverter.Benchmarks, PublicKey=0024000004800000940000000602000000240000525341310004000001000100B1DAE8576C79F6AA981231315A688EBF26AE1ACD5BF2806C272C21B59DBA8A9F6432D4D00E56B3E474A4574BB730126B76A3B8DD4F97EA020DF7718F8090BC12CBB24A08DC8CA987B91FD24CE1C24E85E930FD01268405EC64FE08AB52A7DE9F1806E1F3C5886422D73780F5A69FF7015701F3D2C31094AF1065EF722A86179A" />
+  </ItemGroup>
+
 </Project>

test/TimeZoneConverter.Benchmarks/DataLoaderBenchmark.cs

@@ -0,0 +1,31 @@
+using BenchmarkDotNet.Attributes;
+
+namespace TimeZoneConverter.Benchmarks;
+
+[MemoryDiagnoser]
+public class DataLoaderBenchmark
+{
+    private static readonly Dictionary<string, string> IanaMap = new();
+    private static readonly Dictionary<string, string> WindowsMap = new();
+    private static readonly Dictionary<string, string> RailsMap = new();
+    private static readonly Dictionary<string, IList<string>> InverseRailsMap = new();
+    private static readonly Dictionary<string, string> Links = new();
+    private static readonly Dictionary<string, IList<string>> IanaTerritoryZones = new();
+
+    [IterationSetup]
+    public void IterationSetup()
+    {
+        IanaMap.Clear();
+        WindowsMap.Clear();
+        RailsMap.Clear();
+        InverseRailsMap.Clear();
+        Links.Clear();
+        IanaTerritoryZones.Clear();
+    }
+
+    [Benchmark]
+    public void Load()
+    {
+        DataLoader.Populate(IanaMap, WindowsMap, RailsMap, InverseRailsMap, Links, IanaTerritoryZones);
+    }
+}

test/TimeZoneConverter.Benchmarks/Directory.Build.props

@@ -0,0 +1,5 @@
+<Project>
+
+  <Import Project="..\..\Directory.Build.props" />
+
+</Project>

test/TimeZoneConverter.Benchmarks/Program.cs

@@ -0,0 +1,11 @@
+using BenchmarkDotNet.Running;
+
+namespace TimeZoneConverter.Benchmarks;
+
+public static class Program
+{
+    public static void Main(string[]? args)
+    {
+        BenchmarkSwitcher.FromAssembly(typeof(DataLoaderBenchmark).Assembly).Run(args);
+    }
+}

test/TimeZoneConverter.Benchmarks/TimeZoneConverter.Benchmarks.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net8.0</TargetFrameworks>
+    <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)..\..\.assets\mattjohnsonpint.snk</AssemblyOriginatorKeyFile>
+    <SignAssembly>true</SignAssembly>
+    <OutputType>exe</OutputType>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\TimeZoneConverter\TimeZoneConverter.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
+  </ItemGroup>
+
+</Project>