vmalloc/mongomock — pull request #26 by texuf (2013-05-14 20:55:38+00:00)
Title: more support for collection.find()

http://docs.mongodb.org/manual/reference/method/db.collection.find/

support documented cases for the following projections
{"_id":0}
{"_id":1,"field":1}
{"_id":0,"field":0}
{"_id":0,"field":1}
{"field":0}
{"field":1}