public void Undo_TransactionNotCommited_CommitsTransactionAndInvokesUndoOperation()
{
UndoManager target = new UndoManager();
Mock <IInvokable> invokableMock = new Mock <IInvokable>(MockBehavior.Loose);
ITransaction transaction = target.CreateTransaction();
target.RegisterInvokation(invokableMock.Object);
target.Undo();
invokableMock.Verify(i => i.Invoke(), Times.Once());
Assert.False(target.CanUndo);
Assert.False(target.CanRedo);
}
public void Undo_InvocationRegisteredWithTransaction_InvokesUndoOperation()
{
UndoManager target = new UndoManager();
Mock <IInvokable> invokableMock = new Mock <IInvokable>(MockBehavior.Loose);
using (ITransaction transaction = target.CreateTransaction())
{
target.RegisterInvokation(invokableMock.Object);
}
target.Undo();
invokableMock.Verify(i => i.Invoke(), Times.Once());
Assert.False(target.CanUndo);
Assert.False(target.CanRedo);
}
public void RegisterInvocation_WithTransaction_RegistersInvocationWithPublicTransaction()
{
TransactionFactoryStub factory = new TransactionFactoryStub();
UndoManager target = new UndoManager(factory);
factory.Transaction = new TransactionStub(target);
Mock <IInvokable> invokableMock = new Mock <IInvokable>(MockBehavior.Strict);
using (ITransaction transaction = target.CreateTransaction())
{
target.RegisterInvokation(invokableMock.Object);
}
Assert.True(factory.TransactionCreated);
Assert.True(((TransactionStub)factory.Transaction).InvokationRegistered);
Assert.True(((TransactionStub)factory.Transaction).Commited);
Assert.True(target.CanUndo);
Assert.False(target.CanRedo);
}
