You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mongo2_instrumentation_test.rb
    path of file: ./repos/newrelic-ruby-agent/test/multiverse/suites/mongo
    
    the code of the file until where you have to start completion: # This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/newr
    
          def test_noticed_error_only_at_segment_when_command_fails
            skip if ENV['CI']
            expected_error_class = /Mongo\:\:Error/
            txn = nil
            in_transaction do |db_txn|
              begin
                txn = db_txn
                @database.collection('bogus').drop
              rescue Mongo::Error::OperationFailure => e
                # NOP -- allowing ONLY span to notice error
              end
            end