Question

MbUnit has a great attribute: MultipleCultureAttribute.

I am wondering if there is an easy way to do this in MSTest? So far, the best I can come up with is:

• Externalizating the actual test code to a private method
• Saving the current culture
• Setting the culture and calling the private method (repeated for each culture)
• And finally, reverting to the original culture

At best, it can be described as ugly … and verbose.

Answer 1

The simplest approach may be to use an anonymous delegate, however keep in mind that MSTest will treat this as a single test so it may be difficult to distinguish results for different cultures.

eg. Rough code for anonymous delegate approach.

public static class MultipleCultures
{
    public static void Do(Action action, params CultureInfo[] cultures)
    {
        CultureInfo originalCulture = Thread.CurrentCulture;

        try
        {
            foreach (CultureInfo culture in cultures)
            {
                Thread.CurrentCulture = culture;

                try
                {
                    action();
                }
                catch
                {
                    Console.WriteLine("Failed while running test with culture '{0}'.", culture.Name);
                    throw;
                }
            }
        }
        finally
        {
            Thread.CurrentCulture = originalCulture;
        }
    }
}

[TestClass]
public class Fixture
{
    [TestMethod]
    public void Test()
    {
        MultipleCultures.Do(() =>
        {
            // test code...
        }, CultureInfo.InvariantCulture, CultureInfo.GetCulture("en-GB"));
    }
}