description: "driver-sessions-dirty-session-errors"

schemaVersion: "1.0"

runOnRequirements:
  - minServerVersion: "4.0"
    topologies: [ replicaset ]
  - minServerVersion: "4.1.8"
    topologies: [ sharded ]

createEntities:
  - client:
      id: &client0 client0
      useMultipleMongoses: false
      observeEvents: [ commandStartedEvent ]
  - database:
      id: &database0 database0
      client: *client0
      databaseName: &database0Name session-tests
  - collection:
      id: &collection0 collection0
      database: *database0
      collectionName: &collection0Name test
  - session:
      id: &session0 session0
      client: *client0

initialData:
  - collectionName: *collection0Name
    databaseName: *database0Name
    documents:
      - { _id: 1 }

tests:
  - description: "Dirty explicit session is discarded (insert)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ insert ]
              closeConnection: true
      - name: assertSessionNotDirty
        object: testRunner
        arguments:
          session: *session0
      - name: insertOne
        object: *collection0
        arguments:
          session: *session0
          document: { _id: 2 }
        expectResult: { $$unsetOrMatches: { insertedId: { $$unsetOrMatches: 2 } } }
      - name: assertSessionDirty
        object: testRunner
        arguments:
          session: *session0
      - name: insertOne
        object: *collection0
        arguments:
          session: *session0
          document: { _id: 3 }
        expectResult: { $$unsetOrMatches: { insertedId: { $$unsetOrMatches: 3 } } }
      - name: assertSessionDirty
        object: testRunner
        arguments:
          session: *session0
      - name: endSession
        object: *session0
      - &find_with_implicit_session
        name: find
        object: *collection0
        arguments:
          filter: { _id: -1 }
        expectResult: []
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &insert_attempt
              command:
                insert: *collection0Name
                documents: 
                  - { _id: 2 }
                ordered: true
                lsid: { $$sessionLsid: *session0 }
                txnNumber: 1
              commandName: insert
              databaseName: *database0Name
          - commandStartedEvent: *insert_attempt
          - commandStartedEvent:
              command:
                insert: *collection0Name
                documents: 
                  - { _id: 3 }
                ordered: true
                lsid: { $$sessionLsid: *session0 }
                txnNumber: 2
              commandName: insert
              databaseName: *database0Name
          - commandStartedEvent: &find_with_implicit_session_event
              command:
                find: *collection0Name
                filter: { _id: -1 }
                # There is no explicit session to use with $$sessionLsid, so
                # just assert an arbitrary lsid document
                lsid: { $$type: object }
              commandName: find
              databaseName: *database0Name
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1 }
          - { _id: 2 }
          - { _id: 3 }

  - description: "Dirty explicit session is discarded (findAndModify)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ findAndModify ]
              closeConnection: true
      - name: assertSessionNotDirty
        object: testRunner
        arguments:
          session: *session0
      - name: findOneAndUpdate
        object: *collection0
        arguments:
          session: *session0
          filter: { _id: 1 }
          update: { $inc: { x: 1 } }
          returnDocument: Before
        expectResult: { _id: 1 }
      - name: assertSessionDirty
        object: testRunner
        arguments:
          session: *session0
      - name: endSession
        object: *session0
      - *find_with_implicit_session
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &findAndModify_attempt
              command:
                findAndModify: *collection0Name
                query: { _id: 1 }
                update: { $inc: { x: 1 } }
                new: false
                lsid: { $$sessionLsid: *session0 }
                txnNumber: 1
                readConcern: { $$exists: false }
                writeConcern: { $$exists: false }
              commandName: findAndModify
              databaseName: *database0Name
          - commandStartedEvent: *findAndModify_attempt
          - commandStartedEvent: *find_with_implicit_session_event
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1, x: 1 }

  - description: "Dirty implicit session is discarded (insert)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ insert ]
              closeConnection: true
      - name: insertOne
        object: *collection0
        arguments:
          document: { _id: 2 }
        expectResult: { $$unsetOrMatches: { insertedId: { $$unsetOrMatches: 2 } } }
      - *find_with_implicit_session
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &insert_attempt
              command:
                insert: *collection0Name
                documents: 
                  - { _id: 2 }
                ordered: true
                lsid: { $$type: object }
                txnNumber: 1
              commandName: insert
              databaseName: *database0Name
          - commandStartedEvent: *insert_attempt
          - commandStartedEvent: *find_with_implicit_session_event
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1 }
          - { _id: 2 }

  - description: "Dirty implicit session is discarded (findAndModify)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ findAndModify ]
              closeConnection: true
      - name: findOneAndUpdate
        object: *collection0
        arguments:
          filter: { _id: 1 }
          update: { $inc: { x: 1 } }
          returnDocument: Before
        expectResult: { _id: 1 }
      - *find_with_implicit_session
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &findAndModify_attempt
              command:
                findAndModify: *collection0Name
                query: { _id: 1 }
                update: { $inc: { x: 1 } }
                new: false
                lsid: { $$type: object }
                txnNumber: 1
                readConcern: { $$exists: false }
                writeConcern: { $$exists: false }
              commandName: findAndModify
              databaseName: *database0Name
          - commandStartedEvent: *findAndModify_attempt
          - commandStartedEvent: *find_with_implicit_session_event
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1, x: 1 }

  - description: "Dirty implicit session is discarded (read returning cursor)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ aggregate ]
              closeConnection: true
      - name: aggregate
        object: *collection0
        arguments:
          pipeline: [ { $project: { _id: 1 } } ]
        expectResult: [ { _id: 1 } ]
      - *find_with_implicit_session
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &aggregate_attempt
              command:
                aggregate: *collection0Name
                pipeline: [ { $project: { _id: 1 } } ]
                lsid: { $$type: object }
              commandName: aggregate
              databaseName: *database0Name
          - commandStartedEvent: *aggregate_attempt
          - commandStartedEvent: *find_with_implicit_session_event
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1 }

  - description: "Dirty implicit session is discarded (read not returning cursor)"
    operations:
      - name: failPoint
        object: testRunner
        arguments:
          client: *client0
          failPoint:
            configureFailPoint: failCommand
            mode: { times: 1 }
            data:
              failCommands: [ aggregate ]
              closeConnection: true
      - name: countDocuments
        object: *collection0
        arguments:
          filter: {}
        expectResult: 1
      - *find_with_implicit_session
      - name: assertDifferentLsidOnLastTwoCommands
        object: testRunner
        arguments:
          client: *client0
    expectEvents:
      - client: *client0
        events:
          - commandStartedEvent: &countDocuments_attempt
              command:
                aggregate: *collection0Name
                pipeline: [ { $match: {} }, { $group: { _id: 1, n: { $sum: 1 } } } ]
                lsid: { $$type: object }
              commandName: aggregate
              databaseName: *database0Name
          - commandStartedEvent: *countDocuments_attempt
          - commandStartedEvent: *find_with_implicit_session_event
    outcome:
      - collectionName: *collection0Name
        databaseName: *database0Name
        documents:
          - { _id: 1 }
