public void EntityErrorPropertyChangedRaisesOkCommandCanExecutedChanged()
{
var entity = new DataErrorInfo();
_viewModel.Entity = entity;
var raised = false;
_viewModel.OkCommand.CanExecuteChanged += (sender, args) => { raised = true; };
entity.OnPropertyChanged("Error");
Assert.IsTrue(raised);
}
public void EntityPropertyChangedDoesNotRaiseOkCommandCanExecutedChangedIfEntitySetOther()
{
var entity = new DataErrorInfo();
_viewModel.Entity = entity;
_viewModel.Entity = null;
var raised = false;
_viewModel.OkCommand.CanExecuteChanged += (sender, args) => { raised = true; };
entity.OnPropertyChanged(null);
Assert.IsFalse(raised);
}