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microsoft-testing-platform

3 posts

2026-10-07 errors dotnet testing

Fix: dotnet test falls back to VSTest in a Linux CI pipeline even though the project uses Microsoft.Testing.Platform

dotnet test picks its runner from global.json found by walking up from the working directory. On Linux CI it falls back to VSTest when that file is missing, misnamed, has a mis-cased key, or the SDK is older than 10.

2026-10-01 errors dotnet testing

Fix: dotnet test exits with code 5 and "Zero tests ran" on Microsoft.Testing.Platform

Exit code 5 means MTP rejected a command-line option, not that tests are missing. Run the test exe directly to see the real error, then add the extension package or route the option per project.

2026-09-02 migration vstest microsoft-testing-platform

Migrate from VSTest to Microsoft.Testing.Platform on the .NET 11 SDK

A step-by-step migration from VSTest to Microsoft.Testing.Platform 2.3.3: the OutputType Exe opt-in, the global.json runner switch, loggers becoming reporters, .runsettings becoming testconfig.json, and the exit codes that turn a green CI job red.