deps: update mstest monorepo to v2 and run platform tests in MTP mode (#290)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Evangelink

.justfile

@@ -15,12 +15,12 @@ clean:
   dotnet clean
 
 test-platform: pack
-  dotnet clean ./test/Sample.Test/Sample.Test.fsproj -v:quiet
-  dotnet test ./test/Sample.Test/Sample.Test.fsproj -p:EnableExpectoTestingPlatformIntegration=true -p:IncludeFailingTests=false
+  cd test/mtp && dotnet clean ../Sample.Test/Sample.Test.fsproj -v:quiet
+  cd test/mtp && dotnet test ../Sample.Test/Sample.Test.fsproj -p:EnableExpectoTestingPlatformIntegration=true -p:IncludeFailingTests=false
 
 test-platform-failing: pack
-  dotnet clean ./test/Sample.Test/Sample.Test.fsproj -v:quiet
-  dotnet test ./test/Sample.Test/Sample.Test.fsproj -p:EnableExpectoTestingPlatformIntegration=true -p:IncludeFailingTests=true
+  cd test/mtp && dotnet clean ../Sample.Test/Sample.Test.fsproj -v:quiet
+  cd test/mtp && dotnet test ../Sample.Test/Sample.Test.fsproj -p:EnableExpectoTestingPlatformIntegration=true -p:IncludeFailingTests=true
 
 test-legacy: pack
   dotnet clean ./test/Sample.Test/Sample.Test.fsproj -v:quiet

Directory.Packages.props

@@ -3,8 +3,8 @@
     <PackageVersion Include="Expecto" Version="[10.2.2,11.1.0]" />
     <PackageVersion Include="FSharp.Core" Version="[7.0.200,)" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageVersion Include="Microsoft.Testing.Extensions.VSTestBridge" Version="1.9.1" />
-    <PackageVersion Include="Microsoft.Testing.Platform.MSBuild" Version="1.9.1" />
+    <PackageVersion Include="Microsoft.Testing.Extensions.VSTestBridge" Version="2.2.3" />
+    <PackageVersion Include="Microsoft.Testing.Platform.MSBuild" Version="2.2.3" />
     <PackageVersion Include="Microsoft.TestPlatform.ObjectModel" Version="18.7.0" />
   </ItemGroup>
 </Project>

test/mtp/README.md

@@ -0,0 +1,17 @@
+# `test/mtp` runner launcher
+
+This directory exists only to provide a `global.json` that opts into the
+**Microsoft.Testing.Platform (MTP) mode** of `dotnet test`
+(`"test": { "runner": "Microsoft.Testing.Platform" }`).
+
+Starting with `Microsoft.Testing.Platform` v2 on the .NET 10+ SDK, the legacy
+"VSTest mode" path for running MTP test apps via `dotnet test` was removed, so
+the platform integration test must run through MTP mode instead.
+
+`dotnet test` resolves the test `runner` from the **current working directory's**
+`global.json`, while `YoloDev.Sdk` resolves the repository root (and therefore
+`version.txt`) from the **test project's** directory. The `test-platform`
+recipes in `.justfile` `cd` into this folder and point at
+`../Sample.Test/Sample.Test.fsproj`, so the platform tests run under the MTP
+runner while the legacy (VSTest) recipes keep running from the repo root under
+the default VSTest runner.

test/mtp/global.json

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