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# frozen_string_literal: true
# rubocop:todo all
require 'spec_helper'
describe 'Map-reduce operations' do
let(:client) { authorized_client }
let(:collection) { client['mr_integration'] }
let(:subscriber) { Mrss::EventSubscriber.new }
let(:find_options) { {} }
let(:operation) do
collection.find({}, find_options).map_reduce('function(){}', 'function(){}')
end
before do
collection.insert_one(test: 1)
# Ensure all mongoses are aware of the collection.
maybe_run_mongos_distincts(collection.database.name, collection.name)
client.subscribe(Mongo::Monitoring::COMMAND, subscriber)
end
let(:event) { subscriber.single_command_started_event('mapReduce') }
context 'read preference' do
require_topology :sharded
context 'specified on client' do
let(:client) { authorized_client.with(read: {mode: :secondary_preferred }) }
# RUBY-2706: read preference is not sent on pre-3.6 servers
min_server_fcv '3.6'
it 'is sent' do
operation.to_a
event.command['$readPreference'].should == {'mode' => 'secondaryPreferred'}
end
end
context 'specified on collection' do
let(:collection) { client['mr_integration', read: {mode: :secondary_preferred }] }
# RUBY-2706: read preference is not sent on pre-3.6 servers
min_server_fcv '3.6'
it 'is sent' do
operation.to_a
event.command['$readPreference'].should == {'mode' => 'secondaryPreferred'}
end
end
context 'specified on operation' do
let(:find_options) { {read: {mode: :secondary_preferred }} }
# RUBY-2706: read preference is not sent on pre-3.6 servers
min_server_fcv '3.6'
it 'is sent' do
operation.to_a
event.command['$readPreference'].should == {'mode' => 'secondaryPreferred'}
end
end
end
context 'session' do
min_server_fcv '3.6'
it 'is sent' do
operation.to_a
event.command['lsid'].should_not be nil
end
end
end
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