public void InitialValues()
{
var viewModel = new DummyViewModel();
Assert.IsNull(viewModel.Tag);
Assert.IsNull(viewModel.ParentViewModel);
Assert.IsNull(viewModel.RootViewModel);
Assert.IsFalse(viewModel.IsDirty);
Assert.IsFalse(viewModel.IsRefreshing);
Assert.IsFalse(viewModel.HasErrors);
Assert.IsTrue(viewModel.IsValid);
Assert.IsFalse(viewModel.HasErrors);
Assert.IsNull(viewModel.GetErrors(string.Empty));
Assert.IsNull(viewModel.GetErrors("NotExisting"));
Assert.IsNotNull(viewModel.Commands);
Assert.AreEqual(0, viewModel.Commands.Count);
}
