Missing_Features.rst

What is this?

This document lists down the features missing in mongomock library. PRs for these features are highly appreciated.

If I miss to include a feature in the below list, Please feel free to add to the below list and raise a PR.

• $rename complex operations - https://docs.mongodb.com/manual/reference/operator/update/rename/

• create_collection options - https://docs.mongodb.com/v3.2/reference/method/db.createCollection/#definition

• bypass_document_validation options

• session options

• codec options

• Operations of the aggregate pipeline: * $bucketAuto * $collStats * $currentOp * $geoNear * $indexStats * $listLocalSessions * $listSessions * $merge * $planCacheStats * $redact * $replaceWith * $sortByCount * $unset <https://docs.mongodb.com/manual/reference/operator/aggregation/unset/> _

• Operators within the aggregate pipeline: * Arithmetic operations on dates:

  • $add

  • Some date operators ($isoDayOfWeek, $isoWeekYear, …)
  • Some set operators ($setIntersection, $setDifference, …)
  • Some string operators ($indexOfBytes, …)
  • Text search operator ($meta)
  • Projection operators ($map, $let)
  • Array operators ($concatArrays, $isArray, $indexOfArray, …)
  • $mergeObjects

• Operators within the query language (find): * $expr * $jsonSchema * $text search * $where

• map_reduce options (scope and finalize)

• Database command method except for the ping command.

• Raw Batch BSON operations (aggregate_raw_batches and find_raw_batches)

• Expiring Data