public void query_on_mongo_direct_to_string_test() { MongoCursor <Person> query = mongo.PeopleCollection.Find(Query <Person> .GT(p => p.Age, 30)); const string jsQuery = "{ \"Age\" : { \"$gt\" : 30 } }"; string mongoQuery = query.ToMongoQueryText(); Assert.IsNotNull(mongoQuery); Assert.AreEqual(jsQuery, mongoQuery); }