public void And_option_is_FileMustExist_creation_should_succed()
{
var settings = new AppSettings(FileOption.FileMustExist);
var fileName = Path.GetFileName(settings.FullPath);
// Since we are inside dll the context points to dll specific .config file
Assert.AreEqual("ApplicationSettingsTests.dll.config", fileName);
Assert.IsTrue(settings.FileExists);
}