NUnit -> MSTest Migration

Convert NUnit 3 or 4 tests to MSTest v4 without changing the target framework or test platform. A successful migration builds, discovers the same test cases, and preserves pass/fail, lifecycle, data, filtering, and concurrency semantics.

Scope

Use this skill only when the project contains NUnit packages or source and the user wants MSTest. If the project already uses MSTest and contains no NUnit tests, report that no framework migration is needed and make no changes.

Do not combine this framework conversion with a target-framework upgrade or VSTest/MTP migration. Complete and verify one migration before starting another.

Workspace Contract

• Search the current working directory for projects and source; never look for user files under this skill's directory.
• Classify the deliverable: "convert this project" means edit, build, and test; "give me a plan" means answer without editing.
• Preserve the user's requested project scope. Shared props may be changed only when they own NUnit package or runner configuration for that scope.
• The final response must state the source NUnit version, preserved runner, changed files, high-risk semantic mappings, and actual test counts.

Response Mode