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 , , or metapackage from 3.x to 4.x - Upgrading 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 or implementations for…