public void CanUndoIsTrueAfterCommitData()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
Assert.AreEqual(persister.CanUndo, false);
persister.TrackedObject.Age = 5;
persister.CommitCurrentState("1");
Assert.AreEqual(true, persister.CanUndo);
}
public void CanUndoChangedEventIsFiredWhenDataAreCommited()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
var numberOfEventFires = 0;
persister.CanUndoChanged += (e, o) =>
{
numberOfEventFires++;
};
persister.CommitCurrentState("1");
Assert.AreEqual(1, numberOfEventFires);
}
public void RedoHistoryIsDestroyedWhenCommitingInHistory()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
persister.TrackedObject.Age = 1;
persister.CommitCurrentState("1");
persister.Undo();
Assert.AreEqual(persister.CanRedo, true);
persister.TrackedObject.Age = 2;
persister.CommitCurrentState("2");
Assert.AreEqual(false, persister.CanRedo);
}
public void CanReturnToPreviousStateWithUndo()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
// commit current state before change
persister.CommitCurrentState("1");
persister.TrackedObject.Age = 16;
persister.TrackedObject.Name = "Jack";
var historyId = persister.Undo();
Assert.AreEqual("1", historyId);
Assert.AreEqual(15, persister.TrackedObject.Age);
Assert.AreEqual("John", persister.TrackedObject.Name);
}
public void CanRedoEventIsFiredWhenRedoBecameAvailable()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
var numberOfEventFires = 0;
persister.CanRedoChanged += (e, o) =>
{
numberOfEventFires++;
};
persister.CommitCurrentState("1");
persister.Undo();
Assert.AreEqual(1, numberOfEventFires);
}
public void CanUndoChangedEventIsFiredTwiceWhenUndoIsAvailableAndLaterUnavailable()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
var numberOfEventFires = 0;
persister.CanUndoChanged += (e, o) =>
{
numberOfEventFires++;
};
persister.CommitCurrentState("1");
persister.Undo();
Assert.AreEqual(2, numberOfEventFires);
}
public void PropertyChangedIsRisenOnUndoOperation()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
persister.CommitCurrentState("1");
persister.TrackedObject.Age = 5;
int propertyChangedCount = 0;
persister.TrackedObject.PropertyChanged += (e, v) =>
{
propertyChangedCount++;
};
persister.Undo();
Assert.AreEqual(1, propertyChangedCount);
}
public void CanRedoToTheLatestStateAfterUndo()
{
var persister = TestsHelper.GetPersisterWithSimpleObject(15, "John");
// commit current state before change
persister.CommitCurrentState("1");
persister.TrackedObject.Age = 16;
persister.TrackedObject.Name = "Jack";
var historyId = persister.Undo();
historyId = persister.Redo();
Assert.IsTrue(string.IsNullOrEmpty(historyId));
Assert.AreEqual(16, persister.TrackedObject.Age);
Assert.AreEqual("Jack", persister.TrackedObject.Name);
}