[Azure] use partition for tests.

Build/Nuke/Build.cs

@@ -3,7 +3,6 @@
 using System.Linq;
 using Nuke.Common;
 using Nuke.Common.CI;
-using Nuke.Common.CI.AppVeyor;
 using Nuke.Common.CI.AzurePipelines;
 using Nuke.Common.CI.GitHubActions;
 using Nuke.Common.Execution;
@@ -13,7 +12,6 @@
 using Nuke.Common.Tooling;
 using Nuke.Common.Tools.DotNet;
 using Nuke.Common.Tools.GitVersion;
-using Nuke.Common.Tools.Xunit;
 using Nuke.Common.Utilities.Collections;
 using static Nuke.Common.IO.FileSystemTasks;
 using static Nuke.Common.Tools.DotNet.DotNetTasks;
@@ -61,6 +59,7 @@ partial class Build : Nuke.Common.NukeBuild
     [GitVersion] readonly GitVersion GitVersion;
 
     [CI] readonly AzurePipelines AzurePipelines;
+
     [Parameter("GitHub Token")] readonly string GitHubToken;
 
     AbsolutePath SourceDirectory => RootDirectory / "src";
@@ -124,21 +123,31 @@ from platform in project.GetPlatforms()
         }
     }
 
+    [Partition(4)] readonly Partition TestPartition;
+
     Target Test => _ => _
         .DependsOn(Compile) 
         .Produces(TestResultDirectory / "*.trx")
+        .Partition(() => TestPartition)
         .Executes(() => ExecutesTest(false));
 
     void ExecutesTest(bool excludeNetFramework)
     {
         Logger.Info(excludeNetFramework ? "Exclude net framework" : "Include net framework");
 
-        var testConfigurations =
+        var groupTestConfigurations =
             (from project in TestProjects
             from framework in project.GetTargetFrameworks(excludeNetFramework)
             from platform in project.GetPlatformsForTests()
             select (project, framework, platform))
-                .Filter(IsLocalBuild);
+                .Filter(IsLocalBuild, AzurePipelines)
+            .Group()
+            .ToList();
+
+        var testConfigurations = 
+            TestPartition
+                .GetCurrent(groupTestConfigurations)
+                .SelectMany(x=>x);
 
         DotNetTest(_ =>
             {

Build/Nuke/ProjectExtensions.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.InteropServices;
+using Nuke.Common.CI.AzurePipelines;
 using Nuke.Common.ProjectModel;
 
 public static class ProjectExtensions
@@ -37,13 +38,19 @@ public static IReadOnlyCollection<string> GetPlatformsForTests(this Project proj
         return platforms.Where(x=> x != "x86").ToList();
     }
 
-    public static IEnumerable<(Project project, string framework, string platform)> Filter(this IEnumerable<(Project project, string framework, string platform)> list, bool isLocal)
+    public static IEnumerable<(Project project, string framework, string platform)> Filter(
+        this IEnumerable<(Project project, string framework, string platform)> list, bool isLocal,
+        AzurePipelines azurePipelines)
     {
         if (isLocal)
             return list;
-        //exclude netcore 2.1 and 2.2 in x86 because is not well handle by azure pipelines and github actions on windows
         return list.Where(x =>
         {
+            // exclude netcore 2.2 for azure pipelines
+            if (azurePipelines != null && x.framework.Contains("2.2"))
+                return false;
+
+            //exclude netcore 2.1 and 2.2 in x86 because is not well handle by azure pipelines and github actions on windows
             if (x.platform != "x86")
                 return true;
             if (x.framework == null)
@@ -56,4 +63,17 @@ public static IReadOnlyCollection<string> GetPlatformsForTests(this Project proj
         });
     }
 
+
+    public static IEnumerable<IEnumerable<(Project project, string framework, string platform)>> Group(
+        this IEnumerable<(Project project, string framework, string platform)> list)
+    {
+        var toList = list.ToList();
+        foreach (var element in toList.Where(x=> x.project.Name.Contains("StructLinq.Tests")))
+        {
+            yield return new[] {element};
+        }
+
+        yield return toList.Where(x => !x.project.Name.Contains("StructLinq.Tests"));
+    }
+
 }

azure-pipelines.yml

@@ -40,12 +40,14 @@ stages:
             inputs:
               script: './build.cmd Restore Compile --skip'
       - job: Test
-        displayName: '🚦 Test'
+        displayName: '🚦 Test 🧩'
         dependsOn: [ Compile ]
+        strategy:
+          parallel: 4
         steps:
           - task: CmdLine@2
             inputs:
-              script: './build.cmd Test --skip'
+              script: './build.cmd Test --skip --test-partition $(System.JobPositionInPhase)'
           - task: PublishBuildArtifacts@1
             inputs:
               artifactName: test-results