or_bug

gistfile1.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", github: "rails/rails"
  gem "sqlite3"
end

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 :posts, force: true do |t|
    t.date :start_date
    t.date :end_date
  end

end

class Post < ActiveRecord::Base
  scope :started, -> { where('start_date < :date', date: Date.today) }
  scope :without_end_date, -> { where(end_date: nil) }
  scope :ended, -> { where('end_date < :date', date: Date.today) }
end


class BugTest < Minitest::Test
  def test_association_stuff
    only_end_date = Post.create!(end_date: 2.days.ago)
    started_without_end = Post.create!(start_date: 2.days.ago, end_date: nil)
    posts = Post.ended.or(Post.started.without_end_date) 
    assert posts.count == 2
  end
end