Different behavior of mongo motor on find method with aggregation

[mamazinho]

On mongo motor when you make a query using find() method e after makes an aggregate, the aggregate will be applied above the filtered query and not above all collection.

But when using the mongomock on tests, this is not what happens, the aggregation is above all collection independent of what find() method returns. This behavior can be viewed on prints below:

• Given this route, with this filter and aggregation:

• When I hit it with mongo motor it returns me filtered by machine_id "6748" given on line 190

• When I run the tests, it's possible see on "RESULTS" print on terminal, that all machines existents would be returned while no one should be returned