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require 'spec_helper'
describe Mongo::Server::ConnectionPool::Queue do
describe '#dequeue' do
let(:connection) do
double('connection')
end
let(:queue) do
described_class.new(:max_pool_size => 1) { connection }
end
context 'when the queue is empty' do
context 'when the max size is reached' do
it 'raises a timeout error' do
expect {
queue.dequeue
queue.dequeue
}.to raise_error(Timeout::Error)
end
end
context 'when the max size is not reached' do
it 'creates a new connecection' do
expect(queue.dequeue).to eq(connection)
end
end
end
context 'when waiting for a connection to be enqueued' do
before do
allow(connection).to receive(:record_checkin!).and_return(connection)
Thread.new do
sleep(0.5)
queue.enqueue(connection)
end.join
end
it 'returns the enqueued connection' do
expect(queue.dequeue).to eq(connection)
end
end
end
describe '#disconnect!' do
let(:connection) do
double('connection')
end
let(:queue) do
described_class.new(:max_pool_size => 1) { connection }
end
it 'disconnects all connections in the queue' do
expect(connection).to receive(:disconnect!)
queue.disconnect!
end
end
describe '#enqueue' do
let(:connection) do
double('connection').tap do |con|
allow(con).to receive(:record_checkin!).and_return(con)
end
end
let(:queue) do
described_class.new { connection }
end
before do
queue.enqueue(connection)
end
it 'adds the connection to the queue' do
expect(queue.dequeue).to eq(connection)
end
end
describe '#initialize' do
context 'when a min size is provided' do
let(:queue) do
described_class.new(:min_pool_size => 2) { double('connection') }
end
it 'creates the queue with the minimum connections' do
expect(queue.size).to eq(2)
end
it 'does not use the same objects in the queue' do
expect(queue.dequeue).to_not equal(queue.dequeue)
end
end
context 'when no min size is provided' do
let(:queue) do
described_class.new { double('connection') }
end
it 'creates the queue with the number of default connections' do
expect(queue.size).to eq(1)
end
end
end
describe '#inspect' do
let(:queue) do
described_class.new(:min_pool_size => 2) { double('connection') }
end
it 'includes the object id' do
expect(queue.inspect).to include(queue.object_id.to_s)
end
it 'includes the min size' do
expect(queue.inspect).to include('min_size=2')
end
it 'includes the max size' do
expect(queue.inspect).to include('max_size=5')
end
it 'includes the wait timeout' do
expect(queue.inspect).to include('wait_timeout=1')
end
it 'includes the current size' do
expect(queue.inspect).to include('current_size=2')
end
end
describe '#max_size' do
context 'when a max pool size option is provided' do
let(:queue) do
described_class.new(:max_pool_size => 3) { double('connection') }
end
it 'returns the max size' do
expect(queue.max_size).to eq(3)
end
end
context 'when no pool size option is provided' do
let(:queue) do
described_class.new { double('connection') }
end
it 'returns the default size' do
expect(queue.max_size).to eq(5)
end
end
end
describe '#wait_timeout' do
context 'when the wait timeout option is provided' do
let(:queue) do
described_class.new(:wait_queue_timeout => 3) { double('connection') }
end
it 'returns the wait timeout' do
expect(queue.wait_timeout).to eq(3)
end
end
context 'when the wait timeout option is not provided' do
let(:queue) do
described_class.new { double('connection') }
end
it 'returns the default wait timeout' do
expect(queue.wait_timeout).to eq(1)
end
end
end
describe 'close_stale_sockets!!' do
let(:queue) do
described_class.new(max_pool_size: 2, max_idle_time: 0.5) do
double('connection').tap do |con|
expect(con).to receive(:disconnect!).and_return(true)
allow(con).to receive(:record_checkin!) do
allow(con).to receive(:last_checkin).and_return(Time.now)
con
end
end
end
end
let(:connection) do
queue.dequeue
end
before do
queue.enqueue(connection)
expect(connection).to receive(:connect!).and_return(true)
sleep(0.5)
queue.close_stale_sockets!
end
it 'disconnects and reconnects up to min_size the expired connections' do
expect(queue.size).to eq(1)
end
end
end
|
