public void Varieties_Clear_AllVarietiesRemoved()
{
using (var env = new WordListsViewModelTestEnvironment())
{
CogProject project = SetupProjectWithThreeVarieties(env);
project.Varieties.Clear();
Assert.That(env.WordListsViewModel.Varieties.Count, Is.EqualTo(0));
Assert.That(env.WordListsViewModel.IsEmpty, Is.True);
}
}