public void CanUndo_Should_return_false_When_all_commands_have_been_undone(IUnDoManager manager)
{
manager.Do(Substitute.For <IUnDo>());
manager.Undo();
Check.That(manager.CanUndo).IsFalse();
}
public void CanRedo_Should_return_true_When_a_command_has_been_undone(IUnDoManager manager)
{
manager.Do(Substitute.For <IUnDo>());
manager.Undo();
Check.That(manager.CanRedo).IsTrue();
}
public void Version_Should_return_old_value_When_a_command_is_undone(IUnDoManager manager)
{
int oldVersion = manager.Version;
manager.Do(Substitute.For <IUnDo>());
manager.Undo();
Check.That(manager.Version).IsEqualTo(oldVersion);
}
public void RedoDescriptions_Should_return_descriptions_of_redoable_operations(IUnDoManager manager)
{
IUnDo operation1 = Substitute.For <IUnDo>();
IUnDo operation2 = Substitute.For <IUnDo>();
operation1.Description.Returns("kikoo");
operation2.Description.Returns("lol");
manager.Do(operation1);
manager.Do(operation2);
Check.That(manager.RedoDescriptions).IsEmpty();
manager.Undo();
manager.Undo();
Check.That(manager.RedoDescriptions).ContainsExactly("kikoo", "lol");
}
public void Undo_Should_throw_InvalidOperationException_When_a_transaction_is_going_on(IUnDoManager manager)
{
using (manager.BeginTransaction())
{
Check
.ThatCode(() => manager.Undo())
.Throws <InvalidOperationException>()
.WithMessage("Cannot perform Undo while a transaction is going on.");
}
}
public void Version_Should_return_last_value_When_a_command_is_redone(IUnDoManager manager)
{
manager.Do(Substitute.For <IUnDo>());
int lastVersion = manager.Version;
manager.Undo();
manager.Redo();
Check.That(manager.Version).IsEqualTo(lastVersion);
}
public void Do_Should_clear_undone_history(IUnDoManager manager)
{
manager.Do(Substitute.For <IUnDo>());
manager.Do(Substitute.For <IUnDo>());
manager.Undo();
Check.That(manager.CanRedo).IsTrue();
manager.Do(Substitute.For <IUnDo>());
Check.That(manager.CanRedo).IsFalse();
}
public void Undo_Should_Undo(IUnDoManager manager)
{
IUnDo undo = Substitute.For <IUnDo>();
bool done = false;
undo.When(u => u.Undo()).Do(_ => done = true);
manager.Do(undo);
manager.Undo();
Check.That(done).IsTrue();
}
public void BeginTransaction_Should_add_commands_as_one_operation_in_history_once_disposed(IUnDoManager manager)
{
IUnDo undo = Substitute.For <IUnDo>();
undo.Description.Returns("dummy");
int version = manager.Version;
using (IUnDoTransaction t1 = manager.BeginTransaction("first"))
using (IUnDoTransaction t2 = manager.BeginTransaction("second"))
{
manager.Do(undo);
manager.Do(undo);
t2.Commit();
t1.Commit();
}
Check.That(manager.Version).IsStrictlyGreaterThan(version);
Check.That(manager.UndoDescriptions).ContainsExactly("first");
manager.Undo();
Check.That(manager.Version).IsEqualTo(version);
}
public void Undo_Should_throw_InvalidOperationException_When_CanUndo_is_false(IUnDoManager manager)
{
Check
.ThatCode(() => manager.Undo())
.Throws <InvalidOperationException>();
}
