(test): migrate to xunit.v3 4.0 and microsoft testing platform

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.8] - 2026-08-18
+
+### Changed
+- Migrated tests to xunit.v3 `4.0` and Microsoft Testing Platform only (`src/global.json` `test.runner` next to the `.slnx`; no VSTest, `coverlet.collector`, `Microsoft.NET.Test.Sdk`, or `xunit.runner.visualstudio`). Coverage now uses `coverlet.MTP`; TestRunner always passes `--coverlet` scoped to `[MaksIT.*]*`.
+
 ## [1.0.7] - 2026-08-14
 
 ### Changed

README.md

@@ -2,9 +2,9 @@
 
 Reusable high-availability runtime coordination library for MaksIT services.
 
-![Line Coverage](https://img.shields.io/badge/Line%20Coverage-57.1%25-yellowgreen)
-![Branch Coverage](https://img.shields.io/badge/Branch%20Coverage-49.1%25-yellowgreen)
-![Method Coverage](https://img.shields.io/badge/Method%20Coverage-70.7%25-green)
+![Line Coverage](https://img.shields.io/badge/Line%20Coverage-57%25-yellowgreen)
+![Branch Coverage](https://img.shields.io/badge/Branch%20Coverage-50.9%25-yellowgreen)
+![Method Coverage](https://img.shields.io/badge/Method%20Coverage-69.6%25-green)
 
 ## Packages
 

src/MaksIT.HAMode.Tests/MaksIT.HAMode.Tests.csproj

@@ -6,21 +6,15 @@
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
+    <OutputType>Exe</OutputType>
+    <UseMicrosoftTestingPlatformRunner>true</UseMicrosoftTestingPlatformRunner>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
+    <PackageReference Include="coverlet.MTP" Version="10.0.1" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.11" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="10.0.11" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>

src/MaksIT.HAMode/MaksIT.HAMode.csproj

@@ -8,7 +8,7 @@
     <NoWarn>$(NoWarn);CS1591</NoWarn>
 
     <PackageId>MaksIT.HAMode</PackageId>
-    <Version>1.0.7</Version>
+    <Version>1.0.8</Version>
     <Authors>Maksym Sadovnychyy</Authors>
     <Company>MAKS-IT</Company>
     <Product>MaksIT.HAMode</Product>

src/global.json

@@ -0,0 +1,5 @@
+{
+  "test": {
+    "runner": "Microsoft.Testing.Platform"
+  }
+}

utils/modules/TestRunner.psm1

@@ -7,7 +7,7 @@
 
 .DESCRIPTION
     Provides the Invoke-TestsWithCoverage function for running .NET tests
-    with Coverlet code coverage collection and parsing results.
+    with Microsoft.Testing.Platform and coverlet.MTP code coverage.
 
 .NOTES
     Author: MaksIT
@@ -65,6 +65,20 @@ function Write-TestRunnerLogInternal {
     Write-Host $Message -ForegroundColor Gray
 }
 
+function Get-CoberturaCoverageFiles {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$ResultsDirectory
+    )
+
+    # coverlet.MTP: [prefix.]coverage.cobertura[.timestamp].xml
+    $files = @(
+        Get-ChildItem -Path $ResultsDirectory -Recurse -File -ErrorAction SilentlyContinue |
+            Where-Object { $_.Name -like '*coverage.cobertura*.xml' }
+    )
+    return @($files | Sort-Object FullName -Unique)
+}
+
 function Invoke-TestsWithCoverage {
     <#
     .SYNOPSIS
@@ -155,7 +169,7 @@ function Invoke-TestsWithCoverage {
     New-Item -ItemType Directory -Path $ResultsDir -Force | Out-Null
 
     if (-not $Silent) {
-        Write-TestRunnerLogInternal -Level "STEP" -Message "Running tests with code coverage..."
+        Write-TestRunnerLogInternal -Level "STEP" -Message "Running tests with code coverage (Microsoft.Testing.Platform / coverlet.MTP)..."
         foreach ($d in $resolvedProjectDirs) {
             Write-TestRunnerLogInternal -Level "INFO" -Message "Test Project: $d"
         }
@@ -164,11 +178,15 @@ function Invoke-TestsWithCoverage {
     foreach ($TestProjectDir in $resolvedProjectDirs) {
         Push-Location $TestProjectDir
         try {
+            $projectName = [System.IO.Path]::GetFileName($TestProjectDir)
             $dotnetArgs = @(
                 "test"
-                "--collect:XPlat Code Coverage"
                 "--results-directory", $ResultsDir
                 "--verbosity", $(if ($Silent) { "quiet" } else { "normal" })
+                "--coverlet"
+                "--coverlet-output-format", "cobertura"
+                "--coverlet-file-prefix", $projectName
+                "--coverlet-include", "[MaksIT.*]*"
             )
 
             Import-ExternalCommandSupportInternal
@@ -192,7 +210,7 @@ function Invoke-TestsWithCoverage {
         }
     }
 
-    $coverageFiles = @(Get-ChildItem -Path $ResultsDir -Filter "coverage.cobertura.xml" -Recurse | Sort-Object FullName)
+    $coverageFiles = @(Get-CoberturaCoverageFiles -ResultsDirectory $ResultsDir)
 
     if ($coverageFiles.Count -eq 0) {
         return [PSCustomObject]@{
@@ -455,7 +473,7 @@ function Get-DotNetCoverageFromResultsDirectory {
         [switch]$Silent
     )
 
-    $coverageFiles = @(Get-ChildItem -Path $ResultsDirectory -Filter 'coverage.cobertura.xml' -Recurse -ErrorAction SilentlyContinue | Sort-Object FullName)
+    $coverageFiles = @(Get-CoberturaCoverageFiles -ResultsDirectory $ResultsDirectory)
     if ($coverageFiles.Count -eq 0) {
         return [PSCustomObject]@{
             Success = $false
@@ -566,7 +584,7 @@ function Get-CoverageFromResultsDirectory {
         }
     }
 
-    $hasDotNet = @(Get-ChildItem -Path $resolvedDirectory -Filter 'coverage.cobertura.xml' -Recurse -ErrorAction SilentlyContinue).Count -gt 0
+    $hasDotNet = @(Get-CoberturaCoverageFiles -ResultsDirectory $resolvedDirectory).Count -gt 0
     $jestSummary = Join-Path $resolvedDirectory 'coverage-summary.json'
     $hasNpm = Test-Path -LiteralPath $jestSummary -PathType Leaf
 

utils/plugins/DotNet/DotNetTest.psm1

@@ -7,12 +7,15 @@
 
 .DESCRIPTION
     Resolves one or more .NET test projects (`project` or `projects`), runs tests once
-    via TestRunner, then publishes metrics on the shared engine context for any later
+    via TestRunner (Microsoft Testing Platform + coverlet.MTP only — no VSTest /
+    coverlet.collector), then publishes metrics on the shared engine context for any later
     plugin: `qualityLineCoverage`, `testResult`, `coverageLineRate` / `coverageBranchRate` / `coverageMethodRate`,
     method counts, `testResultsDirectory`, `coverageCoberturaPaths`. Quality gates read
     those keys generically (not tied to this plugin by name). When `resultsDir` (or the
     multi-project default TestResults folder) is used, Cobertura output is kept on disk
     via TestRunner `-KeepResults` so repo-root `test-results/` persists after the run.
+    Product solutions must place `src/global.json` with `test.runner` =
+    Microsoft.Testing.Platform next to the `.sln`/`.slnx`.
 #>
 
 if (-not (Get-Command Import-PluginDependency -ErrorAction SilentlyContinue)) {