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Migrate repo from VSTest to Microsoft.Testing.Platform #1141

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2 changes: 1 addition & 1 deletion .github/workflows/ci-build.yml
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Expand Up @@ -64,7 +64,7 @@ jobs:

# Run tests
- name: Test solution
run: dotnet test --no-build -c ${{matrix.configuration}} -l "console;verbosity=detailed"
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@Sergio0694 Sergio0694 Nov 24, 2025

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Is this because the verbosity is now detailed by default, or something else?

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@Youssef1313 Youssef1313 Jan 7, 2026

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The whole UX for MTP is different, and there is no -l (logger). I'm not sure what piece of info was originally intended to be looked at with detailed verbosity, maybe @nohwnd might know what VSTest exactly does under each verbosity, but anyways, I guess if there is something you don't like with the new output, we would love to know to add more customizations and/or having better defaults.

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@Youssef1313 Youssef1313 Jan 7, 2026

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If detailed shows passed tests, then --output detailed would be kinda the equivalent here.

run: dotnet test --no-build -c ${{matrix.configuration}} --no-progress

# Pack solution
- name: Pack solution
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3 changes: 1 addition & 2 deletions .runsettings
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@@ -1,9 +1,8 @@
<RunSettings>
<MSTest>
<MaxCpuCount>0</MaxCpuCount>
<Parallelize>
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@Sergio0694 Sergio0694 Nov 24, 2025

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Do we still need this?

dotnet/build/Community.Toolkit.Common.targets

Lines 19 to 22 in eb25f10

<!-- Run tests in parallel by default -->
<ItemGroup Condition="$(IsTestProject)">
<AssemblyAttribute Include="Microsoft.VisualStudio.TestTools.UnitTesting.ParallelizeAttribute"/>
</ItemGroup>

Or can we remove it in this PR if it's redundant now?

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@Youssef1313 Youssef1313 Jan 7, 2026

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Interesting. Only one of these are needed, assuming Community.Toolkit.Common.targets is imported for all test projects in the repo.
I would prefer the one in targets and delete the runsettings. Having the assembly attribute provides:

  • More consistent experience.
  • Hint to MSTest analyzer MSTEST0001 that parallelization is enabled, which will otherwise show a by-design false positive.

<Workers>0</Workers>
<Scope>ClassLevel</Scope>
</Parallelize>
</MSTest>
</RunSettings>
</RunSettings>
4 changes: 3 additions & 1 deletion Directory.Build.props
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Expand Up @@ -3,6 +3,8 @@
<PropertyGroup>
<RepositoryDirectory>$(MSBuildThisFileDirectory)</RepositoryDirectory>
<BuildToolsDirectory>$(RepositoryDirectory)build\</BuildToolsDirectory>

<EnableMSTestRunner>true</EnableMSTestRunner>
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@Sergio0694 Sergio0694 Nov 24, 2025

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Can you add a comment to explain what this is and what it does? Or a link to docs if there's any.

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@RyanBuck182 RyanBuck182 Feb 16, 2026

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Introducing the MSTest Runner - .NET Blog

a new lightweight runner for MSTest tests

the runner does integrate with dotnet test, vstest.console, Visual Studio Test Explorer and Visual Studio Code Test Explorer to provide you with the same experience you are used to

Run tests with MSTest - Microsoft Learn

When you use MSTest SDK, by default you're opted in to using Microsoft.Testing.Platform. Alternatively, you can enable MSTest runner by adding the EnableMSTestRunner property and setting OutputType to Exe in your project file.

It seems to be another option for developers to run tests. According to the blog post, it shouldn't interfere with other methods of running tests.

Assuming this is something that we want, we should also set OutputType to Exe as described in the blog post and documentation.

</PropertyGroup>

<Import Project="$(BuildToolsDirectory)Community.Toolkit.Common.props" />
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</When>
</Choose>

</Project>
</Project>
7 changes: 5 additions & 2 deletions global.json
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@@ -1,7 +1,10 @@
{
"sdk": {
"version": "10.0.101",
"version": "10.0.103",
"rollForward": "latestFeature",
"allowPrerelease": false
},
"test": {
"runner": "Microsoft.Testing.Platform"
}
}
}
2 changes: 1 addition & 1 deletion tests/CommunityToolkit.Common.UnitTests/CommunityToolkit.Common.UnitTests.csproj
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Expand Up @@ -2,12 +2,12 @@

<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
</ItemGroup>

<ItemGroup>
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2 changes: 1 addition & 1 deletion tests/CommunityToolkit.Diagnostics.UnitTests/CommunityToolkit.Diagnostics.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
</ItemGroup>

<ItemGroup>
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2 changes: 1 addition & 1 deletion ...munityToolkit.HighPerformance.UnitTests/CommunityToolkit.HighPerformance.UnitTests.csproj
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Expand Up @@ -4,6 +4,7 @@
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<EnablePreviewFeatures>true</EnablePreviewFeatures>
<NoWarn>$(NoWarn);CA2252</NoWarn>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
Expand All @@ -13,7 +14,6 @@
<ItemGroup>
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
</ItemGroup>

</Project>
2 changes: 1 addition & 1 deletion ...yChanging.UnitTests/CommunityToolkit.Mvvm.DisableINotifyPropertyChanging.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
</ItemGroup>

<ItemGroup>
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2 changes: 1 addition & 1 deletion ...ommunityToolkit.Mvvm.Internals.UnitTests/CommunityToolkit.Mvvm.Internals.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
</ItemGroup>

<ItemGroup>
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2 changes: 1 addition & 1 deletion ...munityToolkit.Mvvm.Roslyn4001.UnitTests/CommunityToolkit.Mvvm.Roslyn4001.UnitTests.csproj
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Expand Up @@ -3,13 +3,13 @@
<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="System.Reactive" Version="6.1.0" />
<PackageReference Include="System.Text.Json" Version="10.0.1" />
</ItemGroup>
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2 changes: 1 addition & 1 deletion ...munityToolkit.Mvvm.Roslyn4031.UnitTests/CommunityToolkit.Mvvm.Roslyn4031.UnitTests.csproj
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Expand Up @@ -3,13 +3,13 @@
<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="System.Reactive" Version="6.1.0" />
<PackageReference Include="System.Text.Json" Version="10.0.1" />
</ItemGroup>
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2 changes: 1 addition & 1 deletion ...munityToolkit.Mvvm.Roslyn4120.UnitTests/CommunityToolkit.Mvvm.Roslyn4120.UnitTests.csproj
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Expand Up @@ -8,13 +8,13 @@

<!-- We're intentionally also using '[ObservableProperty]' on some fields, for testing -->
<NoWarn>$(NoWarn);MVVMTK0042</NoWarn>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="System.Reactive" Version="6.1.0" />
<PackageReference Include="System.Text.Json" Version="10.0.1" />
</ItemGroup>
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2 changes: 1 addition & 1 deletion ...munityToolkit.Mvvm.Roslyn5000.UnitTests/CommunityToolkit.Mvvm.Roslyn5000.UnitTests.csproj
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<!-- We're intentionally also using '[ObservableProperty]' on some fields, for testing -->
<NoWarn>$(NoWarn);MVVMTK0042</NoWarn>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
Expand All @@ -18,7 +19,6 @@
<PackageReference Include="Dbs.Signed3.Nito.AsyncEx.Context" Version="5.0.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="System.Reactive" Version="6.1.0" />
<PackageReference Include="System.Text.Json" Version="10.0.1" />
</ItemGroup>
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2 changes: 1 addition & 1 deletion ...s.Roslyn4001.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn4001.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />

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2 changes: 1 addition & 1 deletion ...s.Roslyn4031.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn4031.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<DefineConstants>$(DefineConstants);ROSLYN_4_3_1_OR_GREATER</DefineConstants>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
Expand All @@ -13,7 +14,6 @@
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />

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2 changes: 1 addition & 1 deletion ...s.Roslyn4120.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn4120.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0;net10.0</TargetFrameworks>
<DefineConstants>$(DefineConstants);ROSLYN_4_3_1_OR_GREATER;ROSLYN_4_12_0_OR_GREATER</DefineConstants>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />

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2 changes: 1 addition & 1 deletion ...s.Roslyn5000.UnitTests/CommunityToolkit.Mvvm.SourceGenerators.Roslyn5000.UnitTests.csproj
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<PropertyGroup>
<TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
<DefineConstants>$(DefineConstants);ROSLYN_4_3_1_OR_GREATER;ROSLYN_4_12_0_OR_GREATER;ROSLYN_5_0_0_OR_GREATER</DefineConstants>
<OutputType>Exe</OutputType>
</PropertyGroup>

<ItemGroup>
Expand All @@ -16,7 +17,6 @@
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.1" />

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