IntegrationTestConvention.cs

public class IntegrationTestConvention : Convention
{
    public IntegrationTestConvention()
    {
        Fixtures
            .NameEndsWith("Tests");

        Cases
            .Where(method => method.Void())
            .ZeroParameters();

        InstanceExecution
            .Wrap((fixture, innerBehavior) =>
            {
                using (new TransactionScope())
                    innerBehavior.Execute(fixture);
            });
    }
}