public void A_disposed_VM_cannot_be_mutated()
{
var viewModel = new MyViewModel(_serviceProvider);
viewModel.Dispose();
// Direct interface members
Assert.Throws <ObjectDisposedException>(() => viewModel.AddDisposable(new TestDisposable()));
Assert.Throws <ObjectDisposedException>(() => viewModel.AddDisposable("key", new TestDisposable()));
Assert.Throws <ObjectDisposedException>(() => viewModel.RemoveDisposable(nameof(MyViewModel.Counter)));
Assert.Throws <ObjectDisposedException>(() => viewModel.SetErrors(nameof(MyViewModel.Counter), Enumerable.Empty <object>()));
Assert.Throws <ObjectDisposedException>(() => viewModel.SetErrors(errors: new Dictionary <string, IEnumerable <object> >()));
Assert.Throws <ObjectDisposedException>(() => viewModel.ClearErrors(nameof(MyViewModel.Counter)));
Assert.Throws <ObjectDisposedException>(() => viewModel.View = new TestViewModelView());
Assert.Throws <ObjectDisposedException>(() => viewModel.RaisePropertyChanged(nameof(MyViewModel.Counter)));
}