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Update MSTest v4 migration notes for MSTest.Sdk break around VSTest #49303

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Update MSTest v4 migration notes for MSTest.Sdk break around VSTest #49303

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Update MSTest v4 migration notes for MSTest.Sdk break around VSTest
Youssef1313 Oct 17, 2025
3d8834d
Update docs/core/testing/unit-testing-mstest-migration-v3-v4.md
Youssef1313 Oct 17, 2025
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6 changes: 6 additions & 0 deletions docs/core/testing/unit-testing-mstest-migration-v3-v4.md
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Expand Up @@ -213,3 +213,9 @@ To address long outstanding bugs that many users filed, the generation of `TestC
### TreatDiscoveryWarningsAsErrors now defaults to true

v4 uses stricter defaults. As such, the default value of `TreatDiscoveryWarningsAsErrors` is now `true`. This should be a transparent change for most users and should help other users to uncover hidden bugs.

### MSTest.Sdk no longer adds `Microsoft.NET.Test.Sdk` reference when using Microsoft.Testing.Platform

By default, MSTest.Sdk uses Microsoft.Testing.Platform. If the `UseVSTest` MSBuild property is set to true, it will use VSTest instead. In MSTest 3.x, the SDK added a reference to Microsoft.NET.Test.Sdk (which brings VSTest support) even when using Microsoft.Testing.Platform. This package reference is unnecessary when running with Microsoft.Testing.Platform and has been removed in MSTest v4.

If you still want to have VSTest supported (for example, if you want to run with vstest.console), you need to manually add a package reference to `Microsoft.NET.Test.Sdk` NuGet package to your project.