public void CorrectRunnerIsUsed(string files, string domainUsage, Type expectedType)
        {
            var package = new TestPackage(files.Split(new char[] { ' ' }));

            if (domainUsage != null)
            {
                package.Settings["DomainUsage"] = domainUsage;
            }
            Assert.That(_factory.MakeTestRunner(package), Is.TypeOf(expectedType));
        }