sti_versions_duplicates.rb

sti_versions_duplicates.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"
  gem "activerecord", "6.0.3.7"
  gem "paper_trail", "~> 12", require: false
  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 :plans, force: true do |t|
    t.integer :plan_type
  end
  
  create_table :versions do |t|
    t.string :item_type, null: false
    t.integer :item_id, null: false
    t.string :event, null: false
    t.string :whodunnit
    t.text :object, limit: 1_073_741_823
    t.text :object_changes, limit: 1_073_741_823
    t.datetime :created_at
  end
  add_index :versions, %i[item_type item_id]
end

require "paper_trail"

class Plan < ActiveRecord::Base
  self.inheritance_column = :plan_type
  has_paper_trail
end

module Plans; end
class Plans::Custom < Plan 
  has_paper_trail
end

class STITest < Minitest::Test
  def test_count_with_sti_class
    plan = Plans::Custom.create!

    assert_equal 1, plan.versions.count
  end
end