public void OnImportsSatisfied_MustSubscribe_FieldListChangedEvent()
{
// arrange
var vm = new ProcessCommandsViewModel();
var eventAggregator = Mock.Create<IEventAggregator>();
vm.EventAggregator = eventAggregator;
// act
vm.OnImportsSatisfied();
// assert
Mock.Assert(() => eventAggregator.Subscribe(Arg.IsAny<IEventSink<FieldListChangedEvent>>()), Occurs.Once());
}
