Individual skill
migrate-vstest-to-mtp
Use this skill before answering, planning, or editing whenever .NET tests or CI are switching from VSTest to Microsoft.Testing.Platform (MTP), or an MTP migration behaves differently. Triggers include "switch from VSTest"; MSTest/NUnit/xUnit MTP enablement; OutputType=Exe only for test projects in Directory.Build.props; EnableMSTestRunner, EnableNUnitRunner, UseMicrosoftTestingPlatformRunner, or YTest.MTP.XUnit2; .NET 10 global.json test.runner and TestingPlatformDotnetTestSupport; translating VSTest filters, logger, coverage, blame, or dump arguments; replacing VSTest@3; and exit code 8 or zero tests. Also use for xUnit v3 MTP filters during a v2-to-v3 upgrade. Do not use for framework conversion, TFM, UWP, or WinUI.
plugins/dotnet-test-migration/skills/migrate-vstest-to-mtp/SKILL.md
Source commit 281e39451fb4487b4828d62fcb51ca853589a185
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 4, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 5,854
- Repository last updated
- Nov 8, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent-skills Repository topic
- testing Derived category
- writing Derived category
Files and excerpt
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SKILL.mdcore · 22,210 bytes
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# VSTest -> Microsoft.Testing.Platform Migration
Migrate a .NET test solution from VSTest to Microsoft.Testing.Platform (MTP). The outcome is a solution where all test projects run on MTP, `dotnet test` works correctly, and CI/CD pipelines are updated.
## First Action
Inspect the supplied project, `Directory.Build.props`, `global.json`, and CI
files before searching the web or answering from memory. Resolve the framework
and SDK mode first: .NET 9 and earlier use the compatibility property plus the
`--` separator; .NET 10 native MTP uses `global.json`, removes that property,
and passes MTP arguments without the separator. For central properties, never
condition on `IsTestProject` in `Directory.Build.props`; use a property already
available there, such as `MSBuildProjectName`.
