public void GetPreferredInstance_WithEmptyAutoStartAndMultipleInstances_ReturnsNull() { using (var tidy2 = new DisposableKSP()) { win32_reg.Instances.Add(new Tuple <string, string>("tidy2", tidy2.KSP.GameDir())); manager.LoadInstancesFromRegistry(); manager.ClearAutoStart(); Assert.That(manager.GetPreferredInstance(), Is.Null); } }