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|
# frozen_string_literal: true
# rubocop:todo all
require 'spec_helper'
describe Mongo::Cluster::Topology::Single do
let(:address) do
Mongo::Address.new('127.0.0.1:27017')
end
let(:monitoring) do
Mongo::Monitoring.new(monitoring: false)
end
# Cluster needs a topology and topology needs a cluster...
# This temporary cluster is used for topology construction.
let(:temp_cluster) do
double('temp cluster').tap do |cluster|
allow(cluster).to receive(:servers_list).and_return([])
end
end
let(:topology) do
described_class.new({}, monitoring, temp_cluster)
end
let(:listeners) do
Mongo::Event::Listeners.new
end
let(:cluster) do
double('cluster').tap do |cl|
allow(cl).to receive(:app_metadata).and_return(app_metadata)
allow(cl).to receive(:topology).and_return(topology)
allow(cl).to receive(:options).and_return({})
end
end
describe '.servers' do
let(:mongos) do
Mongo::Server.new(address, cluster, monitoring, listeners,
SpecConfig.instance.test_options.merge(monitoring_io: false)
).tap do |server|
allow(server).to receive(:description).and_return(mongos_description)
end
end
let(:standalone) do
Mongo::Server.new(address, cluster, monitoring, listeners,
SpecConfig.instance.test_options.merge(monitoring_io: false)
).tap do |server|
allow(server).to receive(:description).and_return(standalone_description)
end
end
let(:standalone_two) do
Mongo::Server.new(address, cluster, monitoring, listeners,
SpecConfig.instance.test_options.merge(monitoring_io: false)
).tap do |server|
allow(server).to receive(:description).and_return(standalone_description)
end
end
let(:replica_set) do
Mongo::Server.new(address, cluster, monitoring, listeners,
SpecConfig.instance.test_options.merge(monitoring_io: false)
).tap do |server|
allow(server).to receive(:description).and_return(replica_set_description)
end
end
let(:mongos_description) do
Mongo::Server::Description.new(address, { 'msg' => 'isdbgrid' })
end
let(:standalone_description) do
Mongo::Server::Description.new(address, { 'isWritablePrimary' => true,
'minWireVersion' => 2, 'maxWireVersion' => 8, 'ok' => 1 })
end
let(:replica_set_description) do
Mongo::Server::Description.new(address, { 'isWritablePrimary' => true,
'minWireVersion' => 2, 'maxWireVersion' => 8,
'setName' => 'testing' })
end
let(:servers) do
topology.servers([ mongos, standalone, standalone_two, replica_set ])
end
it 'returns all data-bearing non-unknown servers' do
# mongos and replica_set do not have ok: 1 in their descriptions,
# and are considered unknown.
expect(servers).to eq([ standalone, standalone_two ])
end
end
describe '#initialize' do
context 'with RS name' do
let(:topology) do
Mongo::Cluster::Topology::Single.new(
{replica_set_name: 'foo'},
monitoring, temp_cluster)
end
it 'accepts RS name' do
expect(topology.replica_set_name).to eq('foo')
end
end
context 'with more than one server in topology' do
let(:topology) do
Mongo::Cluster::Topology::Single.new({},
monitoring, temp_cluster)
end
let(:server_1) do
double('server').tap do |server|
allow(server).to receive(:address).and_return(Mongo::Address.new('one'))
end
end
let(:server_2) do
double('server').tap do |server|
allow(server).to receive(:address).and_return(Mongo::Address.new('two'))
end
end
let(:temp_cluster) do
double('temp cluster').tap do |cluster|
allow(cluster).to receive(:servers_list).and_return([server_1, server_2])
end
end
it 'fails' do
expect do
topology
end.to raise_error(ArgumentError, /Cannot instantiate a single topology with more than one server in the cluster: one, two/)
end
end
end
describe '.replica_set?' do
it 'returns false' do
expect(topology).to_not be_replica_set
end
end
describe '.sharded?' do
it 'returns false' do
expect(topology).to_not be_sharded
end
end
describe '.single?' do
it 'returns true' do
expect(topology).to be_single
end
end
describe '#has_readable_servers?' do
it 'returns true' do
expect(topology).to have_readable_server(nil, nil)
end
end
describe '#has_writable_servers?' do
it 'returns true' do
expect(topology).to have_writable_server(nil)
end
end
describe '#summary' do
require_no_linting
let(:desc) do
Mongo::Server::Description.new(Mongo::Address.new('127.0.0.2:27017'))
end
it 'renders correctly' do
expect(topology).to receive(:server_descriptions).and_return({desc.address.to_s => desc})
expect(topology.summary).to eq('Single[127.0.0.2:27017]')
end
end
end
|
