public void RollBackToStartWithNoValues()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc =
id => objects[id];
var storage = new HistoryObjectValueHistory <MockHistoryObject>(lookupFunc);
Assert.DoesNotThrow(() => storage.RollBackToStart());
}
public void RollBackToFirstValue()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc =
id => objects[id];
var storage = new HistoryObjectValueHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Current = obj;
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackTo(new TimeMarker(1));
MockHistoryObject storedValue = storage;
Assert.AreSame(objects[new HistoryId(0)], storedValue);
}
public void RollBackToStart()
{
var objects = new Dictionary <HistoryId, MockHistoryObject>();
Func <HistoryId, MockHistoryObject> lookupFunc =
id => (id != null) ? objects[id] : null;
var storage = new HistoryObjectValueHistory <MockHistoryObject>(lookupFunc);
int maximumValue = 10;
for (int i = 0; i < maximumValue; i++)
{
var obj = new MockHistoryObject(i);
objects.Add(obj.HistoryId, obj);
storage.Current = obj;
storage.StoreCurrent(new TimeMarker((ulong)(i + 1)));
}
storage.RollBackToStart();
MockHistoryObject storedValue = storage;
Assert.AreEqual(null, storedValue);
}
public static T FromStorage(HistoryObjectValueHistory <T> storage)
{
return((storage != null) ? storage.Current : null);
}