migrate-mstest-v3-to-v4

MSTest v3 -> v4 Migration Migrate a test project from MSTest v3 to MSTest v4. The outcome is a project using MSTest v4 that builds cleanly, passes tests, and accounts for every source-incompatible and behavioral change. MSTest v4 is not binary compatible with MSTest v3 -- any library compiled against v3 must be recompiled against v4. When to Use Upgrading MSTest.TestFramework , MSTest.TestAdapter , or MSTest metapackage from 3.x to 4.x Upgrading MSTest.Sdk from 3.x to 4.x Fixing build errors after updating to MSTest v4 packages Resolving behavioral changes in test execution after upgrading to MSTest v4 Updating custom TestMethodAttribute or ConditionBaseAttribute implementations for v4 When Not to Use The project already uses MSTest v4 and builds cleanly -- migration is done Upgrading from MSTest v1 or v2 -- use migrate-mstest-v1v2-to-v3 first, then return here The project does not use MSTest Migrating between test frameworks (e.g., MSTest to xUnit or NUnit) Show more Installs 812 Repository dotnet/skills GitHub Stars 5.1K First Seen Mar 17, 2026 Security Audits Gen Agent Trust Hub Pass Socket Pass Snyk Pass