Add VSTest to MTP migration skill

[Evangelink]

New migrate-vstest-to-mtp skill in the dotnet-test plugin covering:

• Framework-specific MTP runner enablement (MSTest, NUnit, xUnit.net)
• Directory.Build.props centralization of OutputType, runner properties
• MSTest.Sdk UseVSTest removal
• NUnit3TestAdapter 5.0.0+ upgrade requirement
• xunit v2 to xunit.v3 upgrade requirement
• dotnet test CLI argument translation (--logger to --report-trx, --collect to --coverage, --blame-crash to --crashdump, --blame-hang to --hangdump)
• xUnit.net --filter syntax migration to --filter-class/--filter-trait/ --filter-query
• global.json native MTP mode (.NET 10+) vs TestingPlatformDotnetTestSupport VSTest-bridge mode (.NET 9 and earlier)
• Azure DevOps VSTest@3 to DotNetCoreCLI@2 pipeline migration
• MTP extension NuGet packages (TrxReport, CrashDump, HangDump, CodeCoverage)
• Exit code 8 behavioral difference (--ignore-exit-code 8, TESTINGPLATFORM_EXITCODE_IGNORE)

Includes 10 eval scenarios with tiered timeouts (240-360s), 5 fixture directories, plugin.json, marketplace.json entries, CODEOWNERS, and README.md updates.

[JanKrivanek]

/evaluate

[github-actions]

❌ Evaluation did not complete (upstream job failed or was skipped). View workflow run

[JanKrivanek]

/evaluate

[github-actions]

Skill Validation Results

Skill	Scenario	Quality	Skills Loaded	Overfit	Verdict
migrate-vstest-to-mtp	Migrate MSTest project from VSTest to Microsoft.Testing.Platform	5.0/5 → 5.0/5	✅ migrate-vstest-to-mtp; tools: report_intent, skill, view	✅ 0.07	✅
migrate-vstest-to-mtp	Migrate NUnit project from VSTest to Microsoft.Testing.Platform	1.7/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Migrate xUnit.net v2 project from VSTest to Microsoft.Testing.Platform	1.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill, report_intent, view	✅ 0.07	✅
migrate-vstest-to-mtp	Update Azure DevOps pipeline from VSTest task to MTP	3.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Migrate MSTest.Sdk project that explicitly uses VSTest	3.3/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Translate dotnet test VSTest arguments to MTP equivalents	4.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Handle exit code 8 when migrating from VSTest to MTP	3.0/5 → 4.3/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Configure dotnet test MTP mode on .NET 10 SDK	2.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Migrate xUnit.net VSTest filter syntax to MTP	1.0/5 → 2.3/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅
migrate-vstest-to-mtp	Full VSTest to MTP migration plan for MSTest solution	3.3/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill	✅ 0.07	✅

Model: claude-opus-4.6 | Judge: claude-opus-4.6

Full results

[Evangelink]

/evaluate

[github-actions]

Skill Validation Results

Skill	Scenario	Quality (Isolated)	Quality (Plugin)	Skills Loaded	Overfit	Verdict
migrate-vstest-to-mtp	Migrate MSTest project from VSTest to Microsoft.Testing.Platform	4.0/5 → 5.0/5 🟢	4.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill, report_intent / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Migrate NUnit project from VSTest to Microsoft.Testing.Platform	2.0/5 → 5.0/5 🟢	2.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Migrate xUnit.net v2 project from VSTest to Microsoft.Testing.Platform	1.0/5 → 5.0/5 🟢	1.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Update Azure DevOps pipeline from VSTest task to MTP	3.0/5 → 5.0/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Migrate MSTest.Sdk project that explicitly uses VSTest	3.7/5 → 5.0/5 🟢	3.7/5 → 4.7/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Translate dotnet test VSTest arguments to MTP equivalents	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill, report_intent	✅ 0.06	✅
migrate-vstest-to-mtp	Handle exit code 8 when migrating from VSTest to MTP	3.0/5 → 4.7/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Configure dotnet test MTP mode on .NET 10 SDK	2.0/5 → 5.0/5 🟢	2.0/5 → 4.7/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Migrate xUnit.net VSTest filter syntax to MTP	1.0/5 → 2.7/5 🟢	1.0/5 → 3.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅
migrate-vstest-to-mtp	Full VSTest to MTP migration plan for MSTest solution	3.3/5 → 5.0/5 🟢	3.3/5 → 5.0/5 🟢	✅ migrate-vstest-to-mtp; tools: skill / ✅ migrate-vstest-to-mtp; tools: skill	✅ 0.06	✅

Model: claude-opus-4.6 | Judge: claude-opus-4.6

Full results

[Copilot]

Pull request overview

Adds a new migrate-vstest-to-mtp skill to the dotnet-test plugin, along with evaluation coverage and fixtures, to guide migrating .NET test projects from VSTest to Microsoft.Testing.Platform (MTP) and updating CI usage accordingly.

Changes:

• Introduces migrate-vstest-to-mtp skill documentation covering runner enablement, config centralization, CLI arg translation, and CI guidance.
• Adds a new eval suite (eval.yaml) plus multiple fixture projects/pipeline samples for MSTest, NUnit, and xUnit scenarios.
• Updates plugin discovery/metadata (plugin description + marketplace + repo README listing).

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/xunit-vstest/TestProject.csproj	New xUnit v2 VSTest fixture project for migration scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/xunit-vstest/CalculatorTests.cs	New xUnit fixture tests used by eval scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/nunit-vstest/TestProject.csproj	New NUnit VSTest fixture project for migration scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/nunit-vstest/CalculatorTests.cs	New NUnit fixture tests used by eval scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-vstest/TestProject.csproj	New MSTest VSTest fixture project for migration scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-vstest/CalculatorTests.cs	New MSTest fixture tests used by eval scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-sdk-vstest/TestProject.csproj	New MSTest.Sdk fixture demonstrating <UseVSTest>true</UseVSTest> opt-out.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-sdk-vstest/AppTests.cs	New MSTest.Sdk fixture tests used by eval scenarios.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-ci-pipeline/azure-pipelines.yml	New Azure DevOps pipeline fixture demonstrating VSTest@3 usage to be migrated.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-ci-pipeline/TestProject.csproj	New MSTest project fixture paired with the pipeline migration scenario.
tests/dotnet-test/migrate-vstest-to-mtp/fixtures/mstest-ci-pipeline/ServiceTests.cs	New MSTest fixture tests used by the pipeline scenario.
tests/dotnet-test/migrate-vstest-to-mtp/eval.yaml	New eval suite defining 10 migration scenarios and rubrics.
plugins/dotnet-test/skills/migrate-vstest-to-mtp/SKILL.md	New skill playbook for VSTest→MTP migrations (projects, CLI args, CI).
plugins/dotnet-test/plugin.json	Updates plugin description to include migration capabilities.
README.md	Adds dotnet-test to the root plugin list.
.github/plugin/marketplace.json	Registers dotnet-test in the GitHub marketplace list.
.claude-plugin/marketplace.json	Mirrors the marketplace registration for Claude marketplace list.

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