public void WhenShowParentWindow_ItActivates()
{
//Arrange
var eventAggregator = Mock.Create<IEventAggregator>(Behavior.Loose);
var mainVM = new MainViewModel { EventAggregator = eventAggregator };
var parentWindow = new BaseTopLevelWindow();
var childWindow = Mock.Create<ITopLevelWindow>(Behavior.Loose);
Mock.Arrange(() => childWindow.Breadcrumbs).Returns(new ObservableCollection<IBreadcrumbItem>());
mainVM.Windows.Add(parentWindow);
mainVM.ShowChildWindow(parentWindow, childWindow);
// Act
mainVM.ShowParentWindow(parentWindow);
//Assert
Assert.AreEqual(parentWindow, mainVM.SelectedWindow);
}
