Individual skill
migrate-mstest-v1v2-to-v3
Use this skill before answering or editing whenever an MSTest v1/v2 project is being upgraded or repaired for v3. Triggers include QualityTools assembly references; MSTest.TestFramework/TestAdapter 1.x-2.x; "upgrade to MSTest v3"; comparing v1 and v2 migration paths; choosing MSTest or MSTest.Sdk; CS0411/CS1503 after a v3 package bump; DataRow type mismatch, MSTEST0014, or "Test data doesn't match method parameters"; .testsettings/LegacySettings to .runsettings; timeout changes; and net5.0 or other dropped v3 TFMs. Still use it when packages say 3.x but migration source errors or legacy settings remain. Preserve VSTest/MTP. Do not use for a clean v3 project, v3-to-v4, framework conversion, or runner-only migration.
plugins/dotnet-test-migration/skills/migrate-mstest-v1v2-to-v3/SKILL.md
Source commit 281e39451fb4487b4828d62fcb51ca853589a185
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- 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)
- 5,851
- Repository last updated
- Nov 6, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent-skills Repository topic
- writing Derived category
- data Derived category
- testing Derived category
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# MSTest v1/v2 -> v3 Migration
Migrate a test project from MSTest v1 (assembly references) or MSTest v2 (NuGet 1.x-2.x) to MSTest v3. MSTest v3 is **not binary compatible** with v1/v2 -- libraries compiled against v1/v2 must be recompiled.
## First Action
Inspect the supplied workspace and classify v1, v2, partially migrated v3, or
already-complete v3 before answering. Do not search the web or answer from
memory first. For an edit request, continue through the requested source
changes and validation; for an advice request, answer directly after the
classification.
## When to Use
