public void Should_ShowWarning_When_ItemIsInvalid()
{
var viewClosed = false;
var item = new Item();
var parent = Substitute.For <Item>();
var command = new AddCommand(item, parent, () => { viewClosed = true; });
var handler = new AddCommandHandler(_settingsStore, _jobScheduler, _usageReporter, _dialogService);
handler.Handle(command);
Assert.IsFalse(viewClosed);
_dialogService.Received().ShowWarning(Arg.Any <string>(), Arg.Any <string>());
parent.DidNotReceive().Add(item);
_settingsStore.DidNotReceive().TrySave();
_jobScheduler.DidNotReceive().Schedule(item);
_usageReporter.DidNotReceive().ReportEvent(Arg.Any <string>(), Arg.Any <string>(), Arg.Any <string>());
}