<PackageReference Include="NUnit" Version="3.11.0" />

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.
using NUnit.Framework.Interfaces; using NUnit.Framework.Internal; using System; using System.Globalization; namespace NUnit.Framework { [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)] public class SetCultureAttribute : PropertyAttribute, IApplyToContext { private readonly string _culture; public SetCultureAttribute(string culture) : base("SetCulture", culture) { _culture = culture; } void IApplyToContext.ApplyToContext(TestExecutionContext context) { context.CurrentCulture = new CultureInfo(_culture, false); } } }