public void ThrowExceptionIfChangeCompletedDuringUndo()
{
ChangeHistory <FakeChangeToken> history = null;
history = new ChangeHistory <FakeChangeToken>(token => {
history.CurrentChange.ToString();
history.ChangeCompleted();
return(new FakeChangeToken());
});
history.CurrentChange.ToString(); // create current change
Assert.Throws <InvalidOperationException>(() => history.Undo.Execute());
}
public void ClosingEmptyChangeDoesNotAddUndoItem()
{
history.ChangeCompleted();
Assert.False(history.Undo.CanExecute(null));
}
