<PackageReference Include="NUnit" Version="4.3.0" />

NUnit.Framework.SetCultureAttribute

Sets the current Culture on an assembly, test fixture or test method for the duration of a test. The culture remains set until the test or fixture completes and is then reset to its original value.
namespace NUnit.Framework.Internal.Execution { } namespace NUnit.Framework { public class SetCultureAttribute : PropertyAttribute, IApplyToContext { public SetCultureAttribute(string culture); } }