Self-contained gist for Ruby on Rails bug report

test_counter_cache_with_default_scope.rb

# Activate the gem you are reporting the issue against.
gem 'activerecord', '4.0.1'
require 'active_record'
require 'minitest/autorun'
require 'logger'

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :polls do |t|
    t.datetime :published_at # it's NULL by default!
    t.integer :poll_answers_count, nullable: false, default: 0
    t.timestamps
  end

  create_table :poll_answers do |t|
    t.references :poll
  end
end

class Poll < ActiveRecord::Base
  has_many :poll_answers, inverse_of: :poll

  # In most cases we want to deal only with published polls,
  # admin panel controllers calls `unscoped` explicitly.
  default_scope -> { where('polls.published_at <= ?', Time.now) }
end

class PollAnswer < ActiveRecord::Base
  belongs_to :poll, inverse_of: :poll_answers, counter_cache: true
end

class BugTest < Minitest::Test
  def test_association_stuff
    poll = Poll.create!
    poll.poll_answers.create!

    assert_equal 1, poll.poll_answers.size
    assert_equal 1, PollAnswer.count
    assert_equal poll.id, PollAnswer.first.poll.id
  end
end