<PackageReference Include="NUnit" Version="4.4.0" />

NUnit.Framework.SingleThreadedAttribute

Marks a test fixture as requiring all child tests to be run on the same thread as the OneTimeSetUp and OneTimeTearDown. A flag in the TestExecutionContext is set forcing all child tests to be run sequentially on the current thread. Any ParallelScope setting is ignored.
namespace NUnit.Framework { public abstract class IncludeExcludeAttribute : NUnitAttribute { public string Include { get; set; } public string Exclude { get; set; } public string Reason { get; set; } public IncludeExcludeAttribute(); public IncludeExcludeAttribute(string include); } }