data:
    - {_id: 1, x: 11}

tests:
    -
        description: "InsertMany with non-existing documents"
        operation:
            name: "insertMany"
            arguments:
                documents: 
                    - {_id: 2, x: 22}
                    - {_id: 3, x: 33}

        outcome:
            result:
                insertedIds: { 0: 2, 1: 3 }
            collection:
                data:
                    - {_id: 1, x: 11}
                    - {_id: 2, x: 22}
                    - {_id: 3, x: 33}