public void OnImportsSatisfiedTest()
{
var vm = new LoginViewModel();
var localSettings = Mock.Create<ILocalSettingsSerivce>();
Mock.Arrange(() => localSettings.GetLoginInfo()).Returns(new LoginInfo());
Mock.Arrange(() => localSettings.HaveLoginInfo()).Returns(true);
vm.LocalSettingsService = localSettings;
vm.TheEventAggregator = Mock.Create<IEventAggregator>();
vm.OnImportsSatisfied();
}