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# frozen_string_literal: true
require 'rails_helper'
describe ConnectionPool::SharedTimedStack do
class MiniConnection
attr_reader :site
def initialize(site)
@site = site
end
end
subject { described_class.new(5) { |site| MiniConnection.new(site) } }
describe '#push' do
it 'keeps the connection in the stack' do
subject.push(MiniConnection.new('foo'))
expect(subject.size).to eq 1
end
end
describe '#pop' do
it 'returns a connection' do
expect(subject.pop('foo')).to be_a MiniConnection
end
it 'returns the same connection that was pushed in' do
connection = MiniConnection.new('foo')
subject.push(connection)
expect(subject.pop('foo')).to be connection
end
it 'does not create more than maximum amount of connections' do
expect { 6.times { subject.pop('foo', 0) } }.to raise_error Timeout::Error
end
it 'repurposes a connection for a different site when maximum amount is reached' do
5.times { subject.push(MiniConnection.new('foo')) }
expect(subject.pop('bar')).to be_a MiniConnection
end
end
describe '#empty?' do
it 'returns true when no connections on the stack' do
expect(subject.empty?).to be true
end
it 'returns false when there are connections on the stack' do
subject.push(MiniConnection.new('foo'))
expect(subject.empty?).to be false
end
end
describe '#size' do
it 'returns the number of connections on the stack' do
2.times { subject.push(MiniConnection.new('foo')) }
expect(subject.size).to eq 2
end
end
end