chore: run tests in parallel (#348)

* chore: run tests in parallel

Author: Meir017

src/FluentAssertions.Analyzers.TestUtils/PackageReference.cs

@@ -1,17 +1,34 @@
+using System.Collections.Generic;
+
 public class PackageReference
 {
+    private static readonly List<PackageReference> _allDependencies = new();
+
     public string Name { get; }
     public string Version { get; }
     public string Path { get; }
 
-    public PackageReference(string name, string version, string path) => (Name, Version, Path) = (name, version, path);
 
-    public static PackageReference FluentAssertions_6_12_0 { get; } = FluentAssertions("6.12.0");
+    private PackageReference(string name, string version, string path)
+    {
+        Name = name;
+        Version = version;
+        Path = path;
 
+        _allDependencies.Add(this);
+    }
+
+    public static PackageReference FluentAssertions_6_12_0 { get; } = new("FluentAssertions", "6.12.0", "lib/netstandard2.0/");
     public static PackageReference MSTestTestFramework_3_1_1 { get; } = new("MSTest.TestFramework", "3.1.1", "lib/netstandard2.0/");
     public static PackageReference XunitAssert_2_5_1 { get; } = new("xunit.assert", "2.5.1", "lib/netstandard1.1/");
     public static PackageReference Nunit_3_14_0 { get; } = new("NUnit", "3.14.0", "lib/netstandard2.0/");
     public static PackageReference Nunit_4_0_1 { get; } = new("NUnit", "4.0.1", "lib/net6.0/");
 
-    public static PackageReference FluentAssertions(string version) => new("FluentAssertions", version, "lib/netstandard2.0/");
+    internal static PackageReference NETStandard2_0 = new("NETStandard.Library", "2.0.3", "build/netstandard2.0/ref/");
+    internal static PackageReference NETStandard2_1 = new("NETStandard.Library.Ref", "2.1.0", "ref/netstandard2.1/ref/");
+    internal static PackageReference DotNet6 = new("Microsoft.NETCore.App.Ref", "6.0.25", "ref/net6.0/");
+    internal static PackageReference DotNet7 = new("Microsoft.NETCore.App.Ref", "7.0.14", "ref/net7.0/");
+    internal static PackageReference DotNet8 = new("Microsoft.NETCore.App.Ref", "8.0.0", "ref/net8.0/");
+
+    internal static IEnumerable<PackageReference> AllDependencies => _allDependencies;
 }

src/FluentAssertions.Analyzers.TestUtils/SolutionExtensions.cs

@@ -1,6 +1,7 @@
 using System;
 using System.IO;
 using System.IO.Compression;
+using System.Linq;
 using System.Net.Http;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis;
@@ -11,10 +12,11 @@ public static class SolutionExtensions
         ?? (OperatingSystem.IsWindows() ? Environment.ExpandEnvironmentVariables("%userprofile%\\.nuget\\packages") : "~/.nuget/packages");
 
     private static readonly HttpClient HttpClient = new HttpClient();
+    private static readonly Task SetupPackages = Task.WhenAll(PackageReference.AllDependencies.Select(p => DownloadPackageAsync(p.Name, p.Version)));
 
     public static Solution AddPackageReference(this Solution solution, ProjectId projectId, PackageReference package)
     {
-        DownloadPackageAsync(package.Name, package.Version).GetAwaiter().GetResult();
+        SetupPackages.GetAwaiter().GetResult();
 
         var packagePath = Path.Combine(NugetPackagesPath, package.Name, package.Version, package.Path);
         foreach (var dll in Directory.GetFiles(packagePath, "*.dll"))
@@ -29,11 +31,11 @@ public static Solution AddTargetFrameworkReference(this Solution solution, Proje
     {
         return targetFramework switch
         {
-            TargetFramework.NetStandard2_0 => solution.AddPackageReference(projectId, new("NETStandard.Library", "2.0.3", "build/netstandard2.0/ref/")),
-            TargetFramework.NetStandard2_1 => solution.AddPackageReference(projectId, new("NETStandard.Library.Ref", "2.1.0", "ref/netstandard2.1/ref/")),
-            TargetFramework.Net6_0 => solution.AddPackageReference(projectId, new("Microsoft.NETCore.App.Ref", "6.0.25", "ref/net6.0/")),
-            TargetFramework.Net7_0 => solution.AddPackageReference(projectId, new("Microsoft.NETCore.App.Ref", "7.0.14", "ref/net7.0/")),
-            TargetFramework.Net8_0 => solution.AddPackageReference(projectId, new("Microsoft.NETCore.App.Ref", "8.0.0", "ref/net8.0/")),
+            TargetFramework.NetStandard2_0 => solution.AddPackageReference(projectId, PackageReference.NETStandard2_0),
+            TargetFramework.NetStandard2_1 => solution.AddPackageReference(projectId, PackageReference.NETStandard2_1),
+            TargetFramework.Net6_0 => solution.AddPackageReference(projectId, PackageReference.DotNet6),
+            TargetFramework.Net7_0 => solution.AddPackageReference(projectId, PackageReference.DotNet7),
+            TargetFramework.Net8_0 => solution.AddPackageReference(projectId, PackageReference.DotNet8),
             _ => throw new ArgumentOutOfRangeException(nameof(targetFramework), targetFramework, "Unknown target framework"),
         };
     }

src/FluentAssertions.Analyzers.Tests/TestConfiguration.cs

@@ -0,0 +1,3 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+[assembly: Parallelize(Scope = ExecutionScope.MethodLevel)]