session.commit() destroys instance to_dict output

[aristizabal95]

The mocked session is not behaving as expected. When using a SQLAlchemy session, the following code works:

with Session():
    session.add(my_obj)
    session.commit()

print(my_obj.to_dict())

to_dict() returns the dictionary version of the object created. When, instead, I use the mocked_session, as soon as session.commit() runs, my_obj.to_dict() returns an empty dictionary.