Comment 3 for bug 896615

I'm creating my own standalone application, which uses NUnit framework to make tests internally.
Necessary options was set using this code:

Services.UserSettings.SaveSetting("Options.TestLoader.DomainUsage", DomainUsage.None);
Services.UserSettings.SaveSetting("Options.TestLoader.ProcessModel", ProcessModel.Single);

When TestLoader was created, it creates new test-domain. I set a breakpoint inside and found a place in MakeTestPackage, where options was rewritten to Default.