public void testStrategy()
{
List<IPreference> prefsOfUser123 = new List<IPreference>();
prefsOfUser123.Add(new GenericPreference(123L, 1L, 1.0f));
List<IPreference> prefsOfUser456 = new List<IPreference>();
prefsOfUser456.Add(new GenericPreference(456L, 1L, 1.0f));
prefsOfUser456.Add(new GenericPreference(456L, 2L, 1.0f));
List<IPreference> prefsOfUser789 = new List<IPreference>();
prefsOfUser789.Add(new GenericPreference(789L, 1L, 0.5f));
prefsOfUser789.Add(new GenericPreference(789L, 3L, 1.0f));
IPreferenceArray prefArrayOfUser123 = new GenericUserPreferenceArray(prefsOfUser123);
FastByIDMap<IPreferenceArray> userData = new FastByIDMap<IPreferenceArray>();
userData.Put(123L, prefArrayOfUser123);
userData.Put(456L, new GenericUserPreferenceArray(prefsOfUser456));
userData.Put(789L, new GenericUserPreferenceArray(prefsOfUser789));
IDataModel dataModel = new GenericDataModel(userData);
ICandidateItemsStrategy strategy =
new SamplingCandidateItemsStrategy(1, 1, 1, dataModel.GetNumUsers(), dataModel.GetNumItems());
FastIDSet candidateItems = strategy.GetCandidateItems(123L, prefArrayOfUser123, dataModel);
Assert.True(candidateItems.Count() <= 1);
Assert.False(candidateItems.Contains(1L));
}
public void testSerialization()
{
GenericDataModel model = (GenericDataModel)getDataModel();
var formatter = new BinaryFormatter();
var ms = new MemoryStream();
formatter.Serialize(ms, model);
ms.Position = 0;
GenericDataModel newModel = (GenericDataModel)formatter.Deserialize(ms);
Assert.AreEqual(model.GetNumItems(), newModel.GetNumItems());
Assert.AreEqual(model.GetNumUsers(), newModel.GetNumUsers());
Assert.True(model.GetPreferencesFromUser(1L).Equals(newModel.GetPreferencesFromUser(1L)));
Assert.True(model.GetPreferencesForItem(1L).Equals(newModel.GetPreferencesForItem(1L)));
Assert.AreEqual(model.GetRawUserData(), newModel.GetRawUserData());
}
